Morphological Adaptations

Q. Sunken stomata are found in:

1. Hydrophytes
2. Xerophytes
3. Mesophytes
4. Halophytes

Q. Regarding assertion and reason, select the right option
Assertion[A]: Siberian Huskies prefer to live in very cold regions of the world
Reason[R]: Huskies have all the features and adaptations of animals seen in the tundra or polar ecosystem.

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

Q. Assertion – Daphnia populations in a water body at different seasons of an year showed marked variations in their body morphology
Reason – Cyclomorphosis in some planktonic organisms is influenced by the variations in temperatures prevailing in their water bodies at different seasons

1. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
2. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
3. Assertion is true but Reason is false
4. Assertion is false but Reason is true

Q. Siberian Husky is a breed of dog that originated from the coldest region of Siberia (Russia). Would a city like New Delhi be a good place to rear such a breed of dog?

1. Yes. During winters, the temperatures in New Delhi goes below $5^{\circ }$C
2. No. Siberian Huskies cannot tolerate the soaring heat waves that would occur during summer.
3. No. Siberian Huskies have a thick skin and fur, which is not suitable for a temperate climate like that in New Delhi.
4. Yes. Dogs are not affected by climate.

Q. Which of the following is a characteristic feature of a musk ox?

1. Snowy white skin
2. Small body and lesser surface area for skin
3. Long hollow hair on the body
4. All of these