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प्रश्न
Write a short note on adaptations of plants to water scarcity.
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उत्तर
Plants found in deserts are well adapted to cope with water scarcity and the scorching heat of the desert.
- Plants have an extensive root system to tap underground water.
- They bear thick cuticles and sunken stomata on the surface of their leaves to reduce transpiration.
- In Opuntia, the leaves are modified into spines, and green stems carry out the process of photosynthesis.
- Desert plants have special pathways to synthesize food, called the CAM (C4 pathway). It enables their stomata to remain closed during the day to reduce water loss by transpiration.
संबंधित प्रश्न
Define phenotypic adaptation.
Give an example of an ectothermic animal.
Read the following statement. Write a paragraph about adaptation with reference to the statement.
Insects are found in large numbers.
What Allen’s rule indicates in adaptation?
Explain hibernation and aestivation with examples.
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 |
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.
How are cactus adapted to survive in a desert?
Which of the following are characteristics of living beings?
- Respiration
- Reproduction
- Adaptation
- Excretion
Choose the correct answer from the options below:
Hibernation is shown by ______.
