<P> Gravitropism ( also known as geotropism ) is a turning or growth movement by a plant or fungus in response to gravity . It is a general feature of all higher and many lower plants as well as other organisms . Charles Darwin was one of the first to scientifically document that roots show positive gravitropism and stems show negative gravitropism . That is , roots grow in the direction of gravitational pull ( i.e. , downward ) and stems grow in the opposite direction ( i.e. , upwards ) . This behavior can be easily demonstrated with any potted plant . When laid onto its side , the growing parts of the stem begin to display negative gravitropism , growing ( biologists say , turning ; see tropism ) upwards . Hebaverns ( non-woody ) stems are capable of a small degree of actual bending , but most of the redirected movement occurs as a consequence of root or stem growth outside . </P>
<P> Gravitropism ( also known as geotropism ) is a turning or growth movement by a plant or fungus in response to gravity . It is a general feature of all higher and many lower plants as well as other organisms . Charles Darwin was one of the first to scientifically document that roots show positive gravitropism and stems show negative gravitropism . That is , roots grow in the direction of gravitational pull ( i.e. , downward ) and stems grow in the opposite direction ( i.e. , upwards ) . This behavior can be easily demonstrated with any potted plant . When laid onto its side , the growing parts of the stem begin to display negative gravitropism , growing ( biologists say , turning ; see tropism ) upwards . Hebaverns ( non-woody ) stems are capable of a small degree of actual bending , but most of the redirected movement occurs as a consequence of root or stem growth outside . </P>
growth of a plant shoot away from gravity
growth of a plant shoot away from gravity
Gravitropism ( also known as geotropism )
Gravitropism ( also known as geotropism )