36. The process of a plant’s roots growing towards gravity is called:
a) Phototropism
b) Geotropism
c) Thigmotropism
d) Hydrotropism
37. Which of the following is a characteristic of monocot plants?
a) They have parallel leaf veins
b) They have netted leaf veins
c) They have multiple cotyledons
d) They have separate male and female flowers
38. What is the purpose of the guard cells in a plant’s stomata?
a) To regulate water loss
b) To provide structural support
c) To produce flowers
d) To attract pollinators
39. Which of the following is not a type of root system in plants?
a) Fibrous root system
b) Taproot system
c) Adventitious root system
d) Supportive root system
40. What is the primary function of a plant’s leaves?
a) Nutrient storage
c) Water transport
d) Reproduction
