Adaptation

Q.

What are halophytes?

Q.

Write the difference between adaptation and acclimatization.

Q. Halophytes are

1. Plants growing in acidic soil
2. Plant resistant to dry conditions
3. Plants resistant to salt
4. Plants growing on the surface of rocks

Q. Praying Mantis is a good example of

1. Mullerian mimicry
2. Warning colouration
3. Social insects
4. Camouflage

Q. Adaptation may be

1. behavioural
2. morphological
3. physiological
4. all of these

Q. With regard to the assertion and reason, choose the correct option.
Assertion [A]: An ability of an organism to adjust to its environment is called adaptation.
Reason [R]: Acclimatisation is when an organism adjusts to a gradual change in its environment.

1. Both A and R are correct and R explains A
2. Both A and R are correct but R does not explain A
3. A is incorrect but R is correct
4. Both A and R are incorrect

Q. Which of the following adaptations help camels to survive when there is no water in the desert?

1. Leathery tongue
2. Padded feet
3. Hump on its back
4. None of these

Q. The physiological adjustment of an organism to a new environmental condition is known as

1. Selection
2. Introduction
3. Adaptation
4. Acclimatization

Q. Consider the following four conditions (a - d) and select the correct pair of them as the adaption to the environment in desert lizards. The conditions :
(a) Burrowing in soil to escape high temperature
(b) Losing heat rapidly from the body during high temperature
(c) Bask in sun when temperature is low
(d) Insulating body due to thick fatty dermis

1. (a), (b)
2. (c), (d)
3. (a), (c)
4. (b), (d)

Q. With regard to the assertion and reason, choose the correct option.
Assertion [A]: An ability of an organism to adjust to its environment is called adaptation.
Reason [R]: Acclimatisation is when an organism adjusts to a gradual change in its environment.

1. Both A and R are correct and R explains A
2. Both A and R are correct but R does not explain A
3. A is incorrect but R is correct
4. Both A and R are incorrect

Q.

What is the most important factor for the success of animal population?

1. natality

2. adaptability

3. unlimited food

4. interspecies interaction