11. What is the main function of the stem in higher plants?
a) Absorption of water and minerals
b) Storage of food
d) Support and transport
Answer: d) Support and transport
12. What is the purpose of roots hairs in plants?
a) Anchorage
b) Water absorption
c) Protection against pathogens
d) Reproduction
Answer: b) Water absorption
13. What is the function of the stomata in leaves?
a) Water absorption
b) Gas exchange
c) Photosynthesis
d) Storage of food
Answer: b) Gas exchange
14. What type of leaf arrangement is characteristic of monocot plants?
a) Alternate
b) Whorled
c) Opposite
d) None of the above
Answer: b) Whorled
15. What is the function of the cuticle in leaves?
a) Water absorption
b) Gas exchange
c) Protection against pathogens
d) Reduction of water loss
Answer: d) Reduction of water loss