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प्रश्न
Write a short note on Adaptations of plants to water scarcity
उत्तर
Adaptations of plants to water scarcity:
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 the process of photosynthesis is carried out by green stems.
- Desert plants have special pathways to synthesize food, called 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 one example.
Write a short note Adaptations of desert plants and animals
How do desert lizards cope with the variations in their environment ? Explain.
Word search puzzle - Nocturnal Animals
| S | N | A | K | E | O | B |
| X | O | W | L | U | N | A |
| L | V | F | E | C | A | T |
| F | I | R | E | L | L | Y |
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
Match the Column I with Column II and select the correct option.
| Column I | Column II | ||
| i. | CAM pathway | a. | Bv product-water |
| ii. | Opuntia | b. | Possess shorter ears and limbs |
| iii. | Mammals from colder climate | c. | Leaves reduced to spines |
| d. | Stomata remains closed during daytime |
State whether the following statement is True or False. Correct the false statement.
Since very few preys are available, the polar bear does not need to have a strong sense of smell.
Which of the following are characteristics of living beings? (i) Respiration
(ii) Reproduction
(iii) Adaptation
(iv) Excretion
Choose the correct answer from the options below:
Which type of transpiration continues throughout the day and night?
