HORTICULTURE

HORTICULTURE SCIENCE

PLANT BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Leaves Are The Food Factories Of Plant”. But, How Does Cactus (Desert Plants) Carry Out Photosynthesis?
A
Roots
B
Spines
C
Stems
D
Green leaves
Explanation: 

Detailed explanation-1: -Photosynthesis also takes place in other green parts of the plant-in green stems and green branches. The desert plants have scale-or spine-like leaves to reduce the loss of water by transpiration. These plants have green stems which carry out photosynthesis.

Detailed explanation-2: -Cacti utilize CAM photosynthesis, a process unique to succulents. In CAM photosynthesis, stomata open only at night when the plant is relatively cool, so less moisture is lost through transpiration. However, photosynthesis also requires sunlight.

Detailed explanation-3: -The leaves of a cactus are reduced to thin spines to prevent the loss of water through transpiration. These spines cannot really perform photosynthesis. Instead, photosynthesis is carried out by the thick green stem.

Detailed explanation-4: -In desert plants like the cactus, the leaves are modified into spines to minimize the loss of water by transpiration. In such plants, the green stem is capable of performing photosynthesis.

Detailed explanation-5: -In desert plants, the stomata are open amid night. Amid night, desert plants assimilate carbon dioxide and shape a transitional. At that point amid daytime when the stomata are shut to avoid loss of water, they utilize this put-away carbon dioxide to perform photosynthesis.

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