Of all the water moving into a leaf, about what percent is used in photosynthesis, membrane functions, and other activities?
a. 1
b. 2
c. 10
d. 70
Question 28 (1.00 points)
Carbon dioxide enters most plants
a. at night.
b. when transpiration occurs.
c. when the guard cells are turgid.
d. by both b and c.
Which is a micronutrient?
a. sulfur
b. calcium
c. phosphorus
d. manganese
Question 21 (1.00 points)
Most of the macronutrients and micronutrients function as
a. food for plants.
b. structural components for cells.
c. elements needed for the development of mycorrhizae.
d. enzyme activators
a. 1
b. 2
c. 10
d. 70
Question 28 (1.00 points)
Carbon dioxide enters most plants
a. at night.
b. when transpiration occurs.
c. when the guard cells are turgid.
d. by both b and c.
Which is a micronutrient?
a. sulfur
b. calcium
c. phosphorus
d. manganese
Question 21 (1.00 points)
Most of the macronutrients and micronutrients function as
a. food for plants.
b. structural components for cells.
c. elements needed for the development of mycorrhizae.
d. enzyme activators