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
12. What is the purpose of roots hairs in plants?
a) Anchorage
b) Water absorption
c) Protection against pathogens
d) Reproduction
13. What is the function of the stomata in leaves?
a) Water absorption
b) Gas exchange
c) Photosynthesis
d) Storage of food
14. What type of leaf arrangement is characteristic of monocot plants?
a) Alternate
b) Whorled
c) Opposite
d) None of the above
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