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प्रश्न
Explain hibernation and aestivation with examples.
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उत्तर
In certain conditions, if the organisms is unable to migrate, it may avoid the stress by becoming inactive. This is seen commonly in bears going into hibernation during winter. Some snails and fish go into aestivation to avoid summer related problems like heat and desiccation.
संबंधित प्रश्न
Define phenotypic adaptation.
Most living organisms cannot survive at temperatures above 45°C.
Write a short note on adaptations of desert plants.
Write a short note on adaptations of plants to water scarcity.
Read the following statement. Write a paragraph about adaptation with reference to the statement.
We have long ears.
What is the inter-relationship between adaptations of organisms and their surroundings?
Write a short note on adaptations of desert animals.
| Animal observation | ||
| Name of the animal | What is the adult doing? | What is the young one doing? |
Classify the adaptive traits found in organisms.
Match the columns.
| I | II | ||
| i. | Behavioural adaptation | a. | Desert plants possess CAM pathway |
| ii. | Morphological adaptation | b. | Mammals from colder climates possess shorter snout, tail, ears and limbs |
| iii. | Physiological adaptation | c. | Desert lizards regulate body temperature |
Assertion: Mammals from colder climates generally have shorter snout, ears, tail, and limbs.
Reason: This enables them to minimize loss of body heat.
Read the given statement and choose the correct option.
Statement I: Polar animals have a thick layer of fat below skin.
Statement II: The blubber below polar animals' skin allows heat from outside to enter into the body.
All are adaptations exhibited by desert plants, EXCEPT
Read the following statements and choose the correct option.
Statement I: Desert lizards bask in the sun and absorb heat when their body temperature drops but move into the shade when the ambient temperature starts increasing.
Statement II: Desert lizards evolved physiological adaptations to maintain body temperature.
______ have sensitive skin which can feel even small vibrations in the water.
Dog shivers to generate more heat.
State whether the following statement is True or False. Correct the false statement.
Since very few prey are available, polar bear does not need to have strong sense of smell.
Unscramble the given word below to get the correct word using the clues given against them.
| SATPADAOINT | specific features or certain habits which enable a living being to live in its surroundings |
Which type of transpiration continues throughout the day and night?
