NCERT Solutions for Class 6 Science Chapter 9
Important NCERT Questions
Class 6th Chapter 9 The Living Organisms and Their Surroundings
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 2
How are cactus adapted to survive in a desert?
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Cactus lose very little water through transpiration. The leaves in cactus plants are present in the shape of spines. This helps in reducing loss of water from the leaves through transpiration. Its stem is converted into a leaf-like structure. Photosynthesis in these plants is usually carried out by the stems. The stem is also covered with a thick waxy layer, which helps to retain water. Cactus plants have roots that go very deep into the soil for absorbing water.
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Cacti survive in deserts due to unique adaptations. They store water in their thick stems, enabling survival during dry spells. Modified leaves or spines reduce water loss. Shallow but broad root systems quickly absorb surface water. Cacti use CAM photosynthesis, reducing water loss during the day. Their waxy skin further prevents evaporation, enabling survival in arid desert conditions.