Organisms and Populations Quiz 2

Question 1

Which of the following ability is present in the desert animals?

Accepted Answer

Ability to concentrate urine.

Answer

Ability to remain inside the shelters and escape need of water.

Answer

Ability to derive water from all the fruits.

Answer

Ability to absorb water from air.

Question 2

Which of the statement does not describe the adaptation of the desert plants ?

Accepted Answer

Desert plants have soft stems and large leaves.

Answer

Desert plants have a thick cuticle on their leaf surfaces.

Answer

Desert plants have their stomata arranged in sunken pits.

Answer

Desert plants have a special photosynthetic pathway called CAM.

Question 3

What is the use of CAM type of photosynthetic pathway for the desert plants ?

Accepted Answer

It enables their stomata to remain closed during day time.

Answer

It requires less sunlight for the photosynthesis.

Answer

It requires less amount of chlorophyll during photosynthesis.

Answer

The water absorbed from the soil by the plants during CAM photosynthetic pathway is less.

Question 4

In which plant photosynthetic function is taken over by the flattened stems?

Accepted Answer

Opuntia

Answer

Nephrolepis

Answer

Cycas

Answer

Zea mays

Question 5

What is Allen&rsquo;s rule?

Accepted Answer

Mammals from colder climates generally have shorter ears and limbs to minimise heat loss.

Answer

Mammals have constant temperature of the body in spite of their varied habitats.

Answer

Mammals can be oviparous at times.

Answer

The ecosystem of cold climate regions is equally occupied with mammals, birds and reptiles.

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