AP BIOLOGY

PHOTOSYNTHESIS

CAM PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
CAM plants are often found in what type of environments?
A
deep sea fixed to the ocean floor
B
floating in the open ocean
C
hot deserts, salty soils, limited water
D
cooler mountain areas
Explanation: 

Detailed explanation-1: -CAM mechanism is mainly found in desert environment and different angiosperm families. Popular CAM plants are cacti, euphorbias, pineapple, vanilla, and agave. The C4 acids in CAM plants are formed in both temporally and spatially separated mesophyll and bundle sheath cell.

Detailed explanation-2: -CAM plants are typically dominant in very hot, dry areas, like deserts.

Detailed explanation-3: -CAM plants are often found in desert environments. It is too hot and/or dry to keep stomata open during the day, so they only open them at night. However, there is no light at night to do photosynthesis.

Detailed explanation-4: -Plants employing CAM are most common in arid environments, where water is scarce. Being able to keep stomata closed during the hottest and driest part of the day reduces the loss of water through evapotranspiration, allowing such plants to grow in environments that would otherwise be far too dry.

Detailed explanation-5: -Plants in arid climates can lose a lot of moisture if their stoma are open during the day to let in carbon dioxide. CAM plants leave their stoma closed during the day and open them at night instead.

There is 1 question to complete.