Homeostasis

Q. Select the incorrect statements

1. An overwhelming majority of animals and nearly all plants maintain a constant internal temperature
2. An orchid growing as an epiphyte on a mango branch is an example of commensalism.
3. In brood parasitism, the parasitic bird lays its eggs in the nest of its host and lets the host to incubate them.
4. Most of the animals found in the polar regions are very small

Q. Which of the following statements constitute survival mechanisms in different organisms?

1. Some bacteria alter their composition and enter a state of hibernation.
2. Yeasts form spores which are highly sensitive to external conditions.
3. Adrenaline is secreted by the adrenal gland in human beings.
4. The digestive and endocrine systems of human beings do not have a role to play in survival mechanisms.

Q.

The maintenance of relatively constant internal environment is called:

1. exotherm

2. homeostasis

3. endotherm

4. stenotherm