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DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003971
image
question_images/parts_plant_3793.png
parts_plant_3793.png
1
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003945
image
question_images/parts_plant_3787.png
parts_plant_3787.png
0.902633
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003862
image
question_images/parts_plant_1159.png
parts_plant_1159.png
0.89319
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003983
image
question_images/parts_plant_3799.png
parts_plant_3799.png
0.891444
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003981
image
question_images/parts_plant_3797.png
parts_plant_3797.png
0.876992
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003834
image
question_images/parts_plant_1.png
parts_plant_1.png
0.876905
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003965
image
question_images/parts_plant_3791.png
parts_plant_3791.png
0.869339
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003955
image
question_images/parts_plant_3789.png
parts_plant_3789.png
0.868562
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003960
image
question_images/parts_plant_3790.png
parts_plant_3790.png
0.85075
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
DQ_003917
image
question_images/parts_plant_3224.png
parts_plant_3224.png
0.84218
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_3385
text
null
Plants seem to grow wherever they can. How? Plants cant move on their own. So how does a plant start growing in a new area?
0.673224
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_1598
text
null
Plants and animals depend on water to live. They also play a role in the water cycle. Plants take up water from the soil and release large amounts of water vapor into the air through their leaves (Figure 1.3), a process known as transpiration.
0.584462
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_1950
text
null
The most basic division of modern plants is between nonvascular and vascular plants. Vascular plants are further divided into those that reproduce without seeds and those that reproduce with seeds. Seed plants, in turn, are divided into those that produce naked seeds in cones and those that produce seeds in the ovaries of flowers.
0.578129
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_1958
text
null
Plants live just about everywhere on Earth. To live in so many different habitats, they have evolved adaptations that allow them to survive and reproduce under a diversity of conditions. Some plants have evolved special adaptations that let them live in extreme environments.
0.577382
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_1936
text
null
By the time the earliest plants evolved, animals were already the dominant living things in the water. Plants were also limited to the upper layer of water. Only near the top of the water column is there enough sunlight for photosynthesis. So plants never became dominant aquatic organisms.
0.566201
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_3434
text
null
Water also moves through the living organisms in an ecosystem. Plants soak up large amounts of water through their roots. The water then moves up the plant and evaporates from the leaves in a process called transpiration. The process of transpiration, like evaporation, returns water back into the atmosphere.
0.564294
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_1947
text
null
Some seed plants evolved another major adaptation. This was the formation of seeds in flowers. Flowers are plant structures that contain male and/or female reproductive organs.
0.55741
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_1312
text
null
In photosynthesis, plants use CO2 and create O2 . Photosynthesis is responsible for nearly all of the oxygen currently found in the atmosphere. The chemical reaction for photosynthesis is: 6CO2 + 6H2 O + solar energy C6 H12 O6 (sugar) + 6O2
0.547134
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_1932
text
null
All plants have a life cycle that includes alternation of generations. You can see a general plant life cycle in Figure MEDIA Click image to the left or use the URL below. URL:
0.541564
DQ_003975
How many leaves are in the plant?
question_images/parts_plant_3793.png
a. 9, b. 8, c. 6, d. 7
d
T_1942
text
null
With all these adaptations, its easy to see why vascular plants were very successful. They spread quickly and widely on land. As vascular plants spread, many nonvascular plants went extinct. Vascular plants became and remain the dominant land plants on Earth.
0.528726
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003971
image
question_images/parts_plant_3793.png
parts_plant_3793.png
1
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003945
image
question_images/parts_plant_3787.png
parts_plant_3787.png
0.902633
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003862
image
question_images/parts_plant_1159.png
parts_plant_1159.png
0.89319
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003983
image
question_images/parts_plant_3799.png
parts_plant_3799.png
0.891444
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003981
image
question_images/parts_plant_3797.png
parts_plant_3797.png
0.876992
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003834
image
question_images/parts_plant_1.png
parts_plant_1.png
0.876905
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003965
image
question_images/parts_plant_3791.png
parts_plant_3791.png
0.869339
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003955
image
question_images/parts_plant_3789.png
parts_plant_3789.png
0.868562
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003960
image
question_images/parts_plant_3790.png
parts_plant_3790.png
0.85075
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
DQ_003917
image
question_images/parts_plant_3224.png
parts_plant_3224.png
0.84218
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_1698
text
null
How well soil forms and what type of soil forms depends on several different factors, which are described below.
0.578709
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_1106
text
null
Despite these problems, there is a rich fossil record. How does an organism become fossilized?
0.572675
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_0116
text
null
Every organism is different from every other organism. Every organisms genes are different, too.
0.561183
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_1447
text
null
Minerals are divided into groups based on chemical composition. Most minerals fit into one of eight mineral groups.
0.553088
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_0987
text
null
Now that you know what chemical weathering is, can you think of some other ways chemical weathering might occur? Chemical weathering can also be contributed to by plants and animals. As plant roots take in soluble ions as nutrients, certain elements are exchanged. Plant roots and bacterial decay use carbon dioxide in the process of respiration.
0.54708
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_0638
text
null
To understand minerals, we must first understand matter. Matter is the substance that physical objects are made of.
0.545351
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_2956
text
null
Scientists used to think that fungi were members of the plant kingdom. They thought this because fungi had several similarities to plants. For example: Fungi and plants have similar structures. Plants and fungi live in the same kinds of habitats, such as growing in soil. Plants and fungi cells both have a cell wall, which animals do not have.
0.543709
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_2534
text
null
Both types of reproduction have certain advantages.
0.542612
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_3234
text
null
Your heart pumps blood around your body. But how does your heart get blood to and from every cell in your body? Your heart is connected to blood vessels such as veins and arteries. Organs that work together form an organ system. Together, your heart, blood, and blood vessels form your cardiovascular system. What other organ systems can you think of?
0.541673
DQ_003976
Which letter corresponds to roots?
question_images/parts_plant_3793.png
a. D, b. A, c. C, d. B
a
T_0117
text
null
There are variations in the traits of a population. For example, there are lots of variations in the color of human hair. Hair can be blonde, brown, black, or even red. Hair color is a trait determined by genes.
0.538793
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003971
image
question_images/parts_plant_3793.png
parts_plant_3793.png
1
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003945
image
question_images/parts_plant_3787.png
parts_plant_3787.png
0.902633
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003862
image
question_images/parts_plant_1159.png
parts_plant_1159.png
0.89319
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003983
image
question_images/parts_plant_3799.png
parts_plant_3799.png
0.891444
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003981
image
question_images/parts_plant_3797.png
parts_plant_3797.png
0.876992
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003834
image
question_images/parts_plant_1.png
parts_plant_1.png
0.876905
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003965
image
question_images/parts_plant_3791.png
parts_plant_3791.png
0.869339
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003955
image
question_images/parts_plant_3789.png
parts_plant_3789.png
0.868562
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003960
image
question_images/parts_plant_3790.png
parts_plant_3790.png
0.85075
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
DQ_003917
image
question_images/parts_plant_3224.png
parts_plant_3224.png
0.84218
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_3385
text
null
Plants seem to grow wherever they can. How? Plants cant move on their own. So how does a plant start growing in a new area?
0.681573
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_3434
text
null
Water also moves through the living organisms in an ecosystem. Plants soak up large amounts of water through their roots. The water then moves up the plant and evaporates from the leaves in a process called transpiration. The process of transpiration, like evaporation, returns water back into the atmosphere.
0.613552
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_0987
text
null
Now that you know what chemical weathering is, can you think of some other ways chemical weathering might occur? Chemical weathering can also be contributed to by plants and animals. As plant roots take in soluble ions as nutrients, certain elements are exchanged. Plant roots and bacterial decay use carbon dioxide in the process of respiration.
0.609408
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_2956
text
null
Scientists used to think that fungi were members of the plant kingdom. They thought this because fungi had several similarities to plants. For example: Fungi and plants have similar structures. Plants and fungi live in the same kinds of habitats, such as growing in soil. Plants and fungi cells both have a cell wall, which animals do not have.
0.604162
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_1106
text
null
Despite these problems, there is a rich fossil record. How does an organism become fossilized?
0.604006
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_1598
text
null
Plants and animals depend on water to live. They also play a role in the water cycle. Plants take up water from the soil and release large amounts of water vapor into the air through their leaves (Figure 1.3), a process known as transpiration.
0.602987
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_0359
text
null
Soil is a renewable resource, but it can take thousands of years to form. Thats why people need to do what they can to prevent soil erosion.
0.601341
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_2676
text
null
For a long time, scientists classified fungi as members of the Plant Kingdom. Fungi share several obvious traits with plants. For example, both fungi and plants lack the ability to move. Both grow in soil, and both have cell walls. Some fungi even look like plants.
0.585009
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_0897
text
null
Soil is a renewable resource. But it is only renewable if we take care of it. Natural events can degrade soil. These events include droughts, floods, insect plagues, or diseases that damage soil ecosystems. Human activities can also degrade soil. There are many ways in which people neglect or abuse this important resource.
0.58498
DQ_003977
Will the plant grow without its roots?
question_images/parts_plant_3793.png
a. Yes, b. Depends on the plant, c. Maybe, d. No
d
T_1950
text
null
The most basic division of modern plants is between nonvascular and vascular plants. Vascular plants are further divided into those that reproduce without seeds and those that reproduce with seeds. Seed plants, in turn, are divided into those that produce naked seeds in cones and those that produce seeds in the ovaries of flowers.
0.583122
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_003978
image
question_images/parts_plant_3796.png
parts_plant_3796.png
1
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_004028
image
question_images/parts_plant_6277.png
parts_plant_6277.png
0.86454
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_003950
image
question_images/parts_plant_3788.png
parts_plant_3788.png
0.861783
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_003981
image
question_images/parts_plant_3797.png
parts_plant_3797.png
0.860041
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_003955
image
question_images/parts_plant_3789.png
parts_plant_3789.png
0.859063
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_003965
image
question_images/parts_plant_3791.png
parts_plant_3791.png
0.851948
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_003945
image
question_images/parts_plant_3787.png
parts_plant_3787.png
0.850485
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_003917
image
question_images/parts_plant_3224.png
parts_plant_3224.png
0.841897
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_003834
image
question_images/parts_plant_1.png
parts_plant_1.png
0.834347
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
DQ_003971
image
question_images/parts_plant_3793.png
parts_plant_3793.png
0.822528
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
T_2148
text
null
The human body has more than 600 skeletal muscles. You can see some of them in Figure 16.18. A few of the larger muscles are labeled in the figure.
0.469836
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
T_2011
text
null
Most arthropods have three body segments. The segments are the head, thorax, and abdomen. You can see the three segments in a range of arthropods in Figure 12.21. In some arthropods, the head and thorax are joined together.
0.466502
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
T_2262
text
null
The nervous system has two main parts, called the central nervous system and the peripheral nervous system. The peripheral nervous system is described later in this lesson. The central nervous system is shown in Figure 20.4. It includes the brain and spinal cord.
0.441631
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
T_4421
text
null
1. What is the traditional definition of gravity? 2. Identify factors that influence the strength of gravity between two objects.
0.440432
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
T_2288
text
null
An endocrine gland is a gland that secretes hormones into the bloodstream for transport around the body (instead of secreting hormones locally, like sweat glands in the skin). Major glands of the endocrine system are shown in Figure 20.17. The glands are the same in males and females except for the ovaries and testes.
0.421312
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
T_0342
text
null
Living things also need nitrogen. Nitrogen is a key element in proteins. Like carbon, nitrogen cycles through ecosystems. You can see the nitrogen cycle in Figure 18.13.
0.419483
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
T_1038
text
null
1. Distinctive rock formations may be recognizable across large regions (Figure 1.1).
0.41816
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
T_4146
text
null
Identify the conditions that will speed up or slow down the dissolving process.
0.415486
DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
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A life scientist would carry out a scientific investigation to try to answer this question. A scientific investigation follows a general plan called the scientific method. The scientific method is a series of logical steps for testing a possible answer to a question. The steps are shown in the flow chart in Figure 1.8.
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DQ_003978
Identify the part labeled Q in the figure.
question_images/parts_plant_3796.png
a. Roots, b. Fruit, c. Leaf, d. Stem
d
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Sperm ( Figure 1.1), the male reproductive cells, are tiny. In fact, they are the smallest cells in the human body. What do you think a sperm cell looks like? Some people think that it looks like a tadpole. Do you agree?
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DQ_003979
How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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Plants seem to grow wherever they can. How? Plants cant move on their own. So how does a plant start growing in a new area?
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DQ_003979
How many leaves does the plant have?
question_images/parts_plant_3796.png
a. 4, b. 10, c. 6, d. 8
d
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Plants and animals depend on water to live. They also play a role in the water cycle. Plants take up water from the soil and release large amounts of water vapor into the air through their leaves (Figure 1.3), a process known as transpiration.
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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Plants live just about everywhere on Earth. To live in so many different habitats, they have evolved adaptations that allow them to survive and reproduce under a diversity of conditions. Some plants have evolved special adaptations that let them live in extreme environments.
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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The most basic division of modern plants is between nonvascular and vascular plants. Vascular plants are further divided into those that reproduce without seeds and those that reproduce with seeds. Seed plants, in turn, are divided into those that produce naked seeds in cones and those that produce seeds in the ovaries of flowers.
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How many leaves does the plant have?
question_images/parts_plant_3796.png
a. 4, b. 10, c. 6, d. 8
d
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By the time the earliest plants evolved, animals were already the dominant living things in the water. Plants were also limited to the upper layer of water. Only near the top of the water column is there enough sunlight for photosynthesis. So plants never became dominant aquatic organisms.
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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Water also moves through the living organisms in an ecosystem. Plants soak up large amounts of water through their roots. The water then moves up the plant and evaporates from the leaves in a process called transpiration. The process of transpiration, like evaporation, returns water back into the atmosphere.
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How many leaves does the plant have?
question_images/parts_plant_3796.png
a. 4, b. 10, c. 6, d. 8
d
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Some seed plants evolved another major adaptation. This was the formation of seeds in flowers. Flowers are plant structures that contain male and/or female reproductive organs.
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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Instead of fleeing, a plants primary way of responding is to change how it is growing. One way is by tropisms.
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DQ_003979
How many leaves does the plant have?
question_images/parts_plant_3796.png
a. 4, b. 10, c. 6, d. 8
d
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All plants have a life cycle that includes alternation of generations. You can see a general plant life cycle in Figure MEDIA Click image to the left or use the URL below. URL:
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How many leaves does the plant have?
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a. 4, b. 10, c. 6, d. 8
d
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In photosynthesis, plants use CO2 and create O2 . Photosynthesis is responsible for nearly all of the oxygen currently found in the atmosphere. The chemical reaction for photosynthesis is: 6CO2 + 6H2 O + solar energy C6 H12 O6 (sugar) + 6O2
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