Question

How are cactus adapted to survive in a desert ?
For class 6
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Answer 1

Answer:

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Explanation:

A CACTUS IS ABLE TO SURVIVE IN THE DESERT TO THE FOLLOWING FEATURES.

i) IT HAS LONG ROOTS THAT GO DEEP INSIDE THE SOIL FOR ABSORBING WATER.

ii) IT'S LEAVES RAE IN THE FORM OF SPINES TO PREVENT WATER LOSS THROUGH TRANSPIRTATION.

iii) IT'S STEM IS COVERED WITH A THICK WAXY LAYER TO RETAIN WATER.

Answer 2

Modifications in cactus for survival in desert are as follows -

• Cactus is found in very hot environment with less water and high temperature. They do not have leaves to decrease loss of water through evaporation.
• The presence of spines aids the process by trapping air decreasing evaporation. Similarly transpiration is also decreased.
• Photosynthesis is performed by stems and they have stomata deeply embedded in tissues. Moreover, they also have shallow roots that cover large surface area to observe water whenever it rains..