Q.

Select the correct statements with regards to CAM plants.

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a

They inhabit areas which are overshadowed by tall, canopied trees.

b

Their stomata are open throughout the day.

c

They are adapted to habitats with perennial water supply.

d

Their stomata remain closed during daytime.

answer is D.

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Detailed Solution

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Plants with Crassulacean Acid Metabolism (CAM) photosynthetic pathway close their stomata during the day and take up CO2 at night, when the temperature is lower. It is a photosynthetic adaptation to periodic water supply, occurring in plants in deserts (e.g., cacti) or in tropical epiphytes (e.g., orchids and bromeliads).

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