How is fructose absorbed into the body
Fructose is absorbed by facilitated diffusion in the small intestine by the help of transport molecules GLUT5 or GLUT2.

Sources:


https://en.wikipedia.org/wiki/Fructose
http://diabetes.diabetesjournals.org/content/54/10/3056.long


The source you've mentioned (http://ncert.nic.in/ncerts/l/kebo116.pdf), says that certain monosaccharides, such as glucose, can be absorbed by simple diffusion, but it says nothing specifically about fructose.

In fructose malabsorption, in which the transporter GLUT5 is deficient, fructose absorption can be very decreased, which suggests there is probably no additional absorption of fructose by simple diffusion (PubMed).