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The stem is green and fleshy in cactus. ...

The stem is green and fleshy in cactus. Give reason.

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**Step-by-Step Solution:** 1. **Understanding the Environment**: Cacti are adapted to live in harsh environments where water is scarce. This is a key factor in their structural adaptations. 2. **Modification of the Stem**: In cacti, the stem has evolved to become green and fleshy. This modification is crucial for their survival in arid conditions. 3. **Storage Function**: The fleshy and spongy nature of the cactus stem allows it to store water and nutrients. This is essential because cacti need to conserve water for long periods. ...
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PEARSON IIT JEE FOUNDATION-DIVERSITY IN LIVING WORLD - PLANTS-MASTERING THE CONCEPTS (Knowledge and Understanding )
  1. Mention the features taken for the further classificati on of the foll...

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  2. What are the basic differences between bryophytes and pteredophytes?

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  3. Explain the nature of vascular tissue in pteredophytes.

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  4. Define the following. Mesophytes

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  5. Define the following. Sporangia

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  6. Define the following. Xerophytes

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  7. Define the following. Pentamerous Aowers

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  8. List out the differences between monocots and dicots.

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  9. What is the fate of the foliowing organs of a flower after fertilizati...

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  10. What is the fate of the foliowing organs of a flower after fertilizati...

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  11. What is the fate of the foliowing organs of a flower after fertilizati...

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  12. What is the fate of the foliowing organs of a flower after fertilizati...

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  13. What is the fate of the foliowing organs of a flower after fertilizati...

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  14. The aerial roots of banyan tree are not considered as true roots. Give...

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  15. Distinguish between rhizome and stem tuber.

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  16. The stem is green and fleshy in cactus. Give reason.

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  17. Distinguish between parasitic roots and epiphytic roots. Give examples

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  18. Give one example for each of the following. Amphibious plant.

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  19. Give one example for each of the following. Symbiotic plant

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  20. Give one example for each of the following. Colonial coelenterate

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