7. What are villi ? Write their functions.
8. Name any three glands associated with
the digestive system in humans. Also
name their secretions.
9. Differentiate between asexual
reproduction and sexual reproduction.
10. What is vegetative propagation ? Write
the advantages of vegetative propagation.
Answers
Explanation:
7.Villi are small finger-like projections located in the walls of the small intestine. Their function is to increase the surface area in order to maximise the absorption of digested food. ... Microvilli are microscopic cells that project from the villus which further increases surface area for faster absorption.
8.The three different glands associated with the digestive system in humans are salivary( parotid, submandibular, and sublingual), pancreas, and liver. Salivary glands: They produce saliva, which provides lubrication to the food.
9.Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. ... During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote. Meiosis is the type of cell division that produces gametes.
10.(i) The plants that cannot produce viable seeds such as banana, seedless grapes and oranges, etc, can be easily grown by vegetative propagation. (ii) It is an easier, less expensive and a rapid method of propagation. (iii) Genetically identical plants can be produced.
Answer:
here u go!!
idk why this app doesn't let me to post the typed answer...strange
