Q8 of 42 Page 1

How do mammals living in colder regions and seals living in polar regions able to reduce the loss of their body heat?

Allen’s rule is mammals from colder climates generally have shorter ears and limbs to minimize heat loss.

In the polar region, aquatic mammals like seals below their skin have a thick layer of fat (blubber) that acts as an insulator and reduces the loss of body heat.


More from this chapter

All 42 →
2

Name the type of interaction that exists between barnacles and whale.

 4

How do cytokine barriers help in evading viral injections?

 10

What is chance mutation? Explain this phenomenon using application of DDT as an example.

 12

(a) State what happens in the human body when malarial parasites infected RBCs burst to release the parasites in the blood.

(b) Mention the specific sites in the host body where production of


(i) sporozoites and


(ii) gemetocytes take place in the life cycle of the malarial parasites.