AP BIOLOGY

PLANTS

TRANSPORT IN PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cacti grow in arid regions such as deserts. Compared to other plants, transpiration in cacti would most likely be
A
lower
B
higher
C
the same
D
plants in different environments cannot be compared
Explanation: 

Detailed explanation-1: -Instead of stomata that open during the day, cacti have stomata that open at night. This helps them survive in extreme conditions. Cacti can still get the carbon dioxide they need to make their food without having their water supply zapped.

Detailed explanation-2: -(1) They lose a lot of water through transpiration. (2) Their leaves are always broad and flat. (3) They lose very little water through transpiration. (4) Their roots grow very deep into the soil.

Detailed explanation-3: -Answer and Explanation: Cacti generally have among the lower transpiration rates among plants at standard conditions (not too different from 21 Celsius).

Detailed explanation-4: -Dry Plants The desert is a difficult place to be a plant because of the dry, hot air. To move nutrients up their roots, plants evaporate water from their leaves in a process called transpiration.

There is 1 question to complete.