Gaseous Exchange in Plants

Question 1

In terrestrial plants, CO2 is obtained from the atmosphere through ______.

Answer 1

stomata

Question 2

is a pore or aperture that penetrates the epidermis of leaves, young branches, and stem of green plants/

Answer 2

stoma

Question 3

two specialized epidermal cells that forms the stoma

Answer 3

guard cells

Question 4

cells expanding due to
entry of water into the guard cells

Answer 4

Turgid

Question 5

cells shrinking due to exit of
water from the guard cells

Answer 5

flaccid

Question 6

A _____ pH stimulates the stomata to open and a ____ pH stimulates the stomata to close.

Answer 6

higher, low

Question 7

In aquatic plants, the carbon dioxide
required for photosynthesis is
obtained in the form of ____________ from the carbonic
acid present in water.

Answer 7

hydrogen carbonate ions

Question 8

Stomata open wide when exposed to blue and red light and do not open at all when exposed to ______ light.

Answer 8

green