part 3

Question 1

what do desert pants adapt

Answer 1

1. thick cuticles on the leaf surface
2. sunken stomata
3. leaves modified into spines
4. due to CAM pathway photosynthesis remain closed during the day
   eg. , opuntia, cactus etc

Question 2

aquatic plants have evolved

Answer 2

have evolved aerenchyma for buoyancy and floating. they have waxy covering

Question 3

desert animals have adapted

Answer 3

kangaroo rat in the North America never drink water because it generates metabolic water due to oxidation of fats

Question 4

Allens rule

Answer 4

states that animals from colder climates have shorter ears and limbs to minimize heat loss

Question 5

polar seals adapt

Answer 5

they have a thick layer of fat (blubber) below their skin that acts as insulator

Question 6

how do desert lizards keep their body temperature constant

Answer 6

by behavioral adaptations. they bask in the sun and absorb the heat when their body temperature is below their comfort zone