Thermoregulation

Q.

In invertebrates, the body temperature varies according to external conditions. So they are called ______ animals.

Q. Which of the following(s) occur(s) during vasodilation?

1. Blood flow to the skin increases
2. Blood flow to the skin decreases
3. Heat is lost
4. Heat is retained

Q. Adaptation to low temperature and freezing in animals occurs due to the production of

1. Chaperonins
2. Proline
3. Antifreeze
4. Alanine

Q. What characterisitc best describes the organisms listed below?

Cat, toad, wall lizard, man, red algae

1. They are not eukaryotic organisms

2. Stenothermal

3. Eurythermal

4. Thermophilic

Q. The animals that rely on the heat from the environment rather than metabolism to raise their body temperature are called ___

1. Ectotherm
2. Poikilotherm
3. Homeotherm
4. Endotherm

Q. When the environmental temperature is low, our peripheral blood vessels constrict, minimising blood flow near the skin.

1. True
2. False