Behavioral Adaptations

Q.

Write a short note on:

a) Adaptations of desert plants and animals.

b) Adaptations of plants to water scarcity.

c) Behavioural adaptations in animals.

d) Importance of light on plants.

Q. Behavioural means to cope environmental variations include:

1. Secretion of solid urine by kangaroo rat
2. Increase in red blood cell production at high altitude
3. Desert lizard bask in sunlight when temperature drops below the comfort zone
4. Leaves reduced to spines in Opuntia

Q. How do desert lizards cope with the variations in their environment? Explain. [3 Marks]

Q. Behavioural means to cope environmental variations include:

1. Secretion of solid urine by kangaroo rat
2. Increase in red blood cell production at high altitude
3. Desert lizard bask in sunlight when temperature drops below the comfort zone
4. Leaves reduced to spines in Opuntia

Q. Match column A with column B and select the correct option.

Column A	Column B
1. Behavioural adaptation	A. Production of concentrated urine in camels
2. Morphological adaptation	B. Hiding in burrows by some desert animals
3. Physiological adaptation	C. Sunken stomata in xerophytic plants

1. 1 - A, 2 - C, 3 - B
2. 1 - C, 2 - A, 3 - B
3. 1 - B, 2 - C, 3 - A
4. 1 - B, 2 - A, 3 - C

Q. Match List-I with List-II
$\begin{array}{cccc}& \text{List-I}& & \text{List-II}\\ \text{(a)}& \text{Allen's rule}& \left(i\right)& \text{Kangaroo rat}\\ \text{(b)}& \text{Physiological}& \left(ii\right)& \text{Desert lizard}\\ & \text{adaptation}& & \\ \text{(c)}& \text{Behavioural}& \left(iii\right)& \text{Marine fish at depth}\\ & \text{adaptation}& & \\ \text{(d)}& \text{Biochemical}& \left(iv\right)& \text{Polar seal}\\ & \text{adaptation}& & \end{array}$

Choose the correct answer form the options given below.

1. a - iv, b - iii, c - ii, d - i
2. a - iv, b - ii, c - iii, d - i
3. a - iv, b - i, c - iii, d - ii
4. a - iv, b - i, c - ii, d - iii

Q. Kangaroo Rats come out only at night when it is cool. This is a

1. population
2. organism
3. community
4. species

Q. Find the incorrectly matched pair

1. Kangaroo rat - Internal fat oxidation
2. Opuntia - Thorns
3. Whale - Blubber
4. Desert lizard - Behavioural adaptations

Q.

Consider the following statements 1 - 4 each with one or two blanks

1. Bears go into ___a___ during winter to ___b___ cold weather.

2. A conical age pyramid with a broad base represents the ___c___ human population.

3. A wasp pollinating a big flower is an example of ___d___.

4. An area with a high level of species richness is known as ___e___.

Which one of the following options, gives the correct fill-ups for the respective blank number from (a) - (e) in the statements?

1. (c) – stable, (d) – commensalism, (e) – marsh

2. (a) – aestivation, (b) – escape, (c) – stable, (d) – mutualism

3. (c) – expanding, (d) – commensalism, (e) – biodiversity park

4. (a) – hibernation, (b) – escape, (c) – expanding (e) – hot spot

Q.

Consider the following statements 1 - 4 each with one or two blanks

1. Bears go into ___a___ during winter to ___b___ cold weather.

2. A conical age pyramid with a broad base represents the ___c___ human population.

3. A wasp pollinating a big flower is an example of ___d___.

4. An area with a high level of species richness is known as ___e___.

Which one of the following options, gives the correct fill-ups for the respective blank number from (a) - (e) in the statements?

1. (a) – aestivation, (b) – escape, (c) – stable, (d) – mutualism

2. (c) – expanding, (d) – commensalism, (e) – biodiversity park

3. (a) – hibernation, (b) – escape, (c) – expanding (e) – hot spot

4. (c) – stable, (d) – commensalism, (e) – marsh

Q. Fitness is the end result of the ability to adapt and get selected by nature. Explain with a suitable example.Give reasons.

Q. Warrior ants have a chemical signal that tells other ants in the family not to attack. Some have adapted and learned to imitate the chemical signal from other colonies so they can invade and take over another colony and the workers will never know. The given example can be related to

1. Genetic variation
2. Mutation
3. Natural selection
4. None of the above

Q. Explain the interpretation of Charles Darwin when he observed a variety of small block birds on Galapagos Islands.

Q. Camels and llamas are examples of dispersed individuals evolving separately. This is considered as a consequence of

1. Ecological barriers
2. Climatic barriers
3. Continental drift
4. Topographical factors

Q. Consider the following statements (i-iv) each with one or two blanks:

(i) Bears go into —---1—-- during winter to —--2—-- cold weather.
(ii) A conical age pyramid with a broad base represents —-3—- human population.
(iii) A wasp pollinating a fig flower is an example of —-4—-.
(iv) An area with high levels of species richness is known as —-5—- .

Which of the following options, gives the correct fill ups from the respective blank numbers from 1 to 5 in the statements-

1. 1 - hibernation, 2 - escape, 3 - expanding, 5 - hotspot
2. 3 - expanding, 4 - commensalism, 5 - biodiversity park
3. 3 - stable, 4 - commensalism, 5 - marsh
4. 1 - aestivation, 2 - escape, 3 - stable, 4 - mutualism

Q. Kangaroo Rats come out only at night when it is cool. This is a

1. Behavioural adaptation
2. Physiological adaptation
3. Morphological adaptation
4. All of the above

Q. Natural theologians believed that adaptations of organisms are

1. Incomplete and of no consequence
2. An illusion, based on belief rather than proof
3. Evidence that organisms are designed by Creator
4. Evidence that not created by Creator