Page 1 - Assignment-Questions-Transport in Plants

Assignment

A – Multiple Choice Questions (MCQs)

1. The rate of transpiration will _________ if the atmospheric pressure is low
a. Increase
b. Decrease
c. Stay unchanged
d. Can’t be determined

2. The main function of guard cells is to help with ____________
a. Transpiration

b. Guttation
c. Transcription
d. None of the above
3. Transpiration is regulated by the movements of __________
a. Parenchyma cells
b. Guard cells
c. Epithelial cells
d. None of the above
4. The steroid hormones easily pass through the plasma membrane through simple
diffusion because they are _____
a. Gaseous
b. Carbon-based
c. Water Soluble
d. Lipid Soluble
5. Living cells placed in an isotonic solution tend to retain their shape and size. This
is based on the principle of
a. Diffusion
b. Transpiration
c. Osmosis
d. None of the above
6. Girdling around the trunk of a tree can cause it to ________ if it cannot regrow
to bridge the wound
a. Stop absorbing water
b. Stop growing
c. Die
d. None of the above
7. Transport of food materials in higher plants occurs through
a. Flowers
b. Companion cells
c. Tracheids
d. Sieve elements