ZOO507 Final Term Past Papers Lectures 91-130 by Zainab Arshad

Final term 91 to 130 · Short And Long Question · Contact at: adulrehman74779 · ZOO507

S.Q: Define Ectotherms?

What are the characteristics of ectotherms?

What are the examples of ectotherms?

91-Ectotherms

Organisms that control their body temperature by means of external source. They are on the mercy of environmental temperature. Mcqs: Their body temperature fluctuates with respect to

S.q: Characteristics of Ectotherms

 Generate body heat from external environment  Body insulation is very poor

Cold Examples MCQs: Cold

blooded animals

 Fish  Amphibians  Reptiles  Invertebrates

92) Endotherms

L.Q: Write a note on endotherms:

S,Q: What are endotherms? Define endotherms?

Animals that produce their own body heat through internal mechanisms.

•  Their internal body temperature is independent of

S.Q: What are the examples of endotherms?

Warm blooded animals, birds and

mammals.

S.Q: What are the characteristics of endotherms?

Characteristics of Endotherms

 High rate of metabolism  Generate heat from body cellular activities  Body insulation by fur or feathers S.& L Q: Explain the survival mechanisms in endotherms with respect to environment ? Survival mechanisms in hot environment,

Sweating

, Panting

,Vasodilation ,

S.Q: What are Survival · mechanisms · in

cold environment?

Survival mechanisms · in · cold environment

1. Fat deposits
2. Fur o Feathers
3. Vasoconstriction
4. Hibernation

93) Torpor · S.Q: Define torper · L.Q: Write a note on torper · S.Q: Examples · Mcqs:

S.Q: Define torper: A condition in which the rate of metabolism, circulation and respiration of individuals decreases when they are not feeding. Torpor allows the individual to survive in non feeding period. Torpor enables these animals to survive in a condition in which they are unable to feed.

S.Q: What are the examples of torper:

It is found in bats, hummingbirds, and other animals. Torpor is generally found in small bird and mammals because they have to expend less energy to return to normal body functions. MCQS: Torpor is a mechanism that is under physiological control. Animals can regain its normal body activities in a short period of time after remaining in a state of torpor.

94) Hibernation

s.q: Define hibernation? What is Hibernation?

MCQ: A condition in which, animals become inactive usually

in cold environments for their survival.