FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cactus
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birch tree
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daisy
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palm tree
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Detailed explanation-1: -Cactus survive in deserts due to following adaptations: It has a flat green stem to store water and prepare food by photosynthesis. The stem is also covered with a thick waxy layer, which helps to retain water. Its roots go deep into the soil for absorbing water.
Detailed explanation-2: -The outer skin of the saguaro is waxy to prevent water loss through evaporation. It also contains chlorophyll and is the site of photosynthesis – by eliminating leaves, cacti are able to reduce water loss even further.
Detailed explanation-3: -Cactus pads are actually modified stems with a waxy coating. The prickly spines are modified leaves that break up the evaporative winds blowing across pad surfaces, and help shade the stem.