The leaves of plant found in dry regions are modified into thorns. Justify the statement.
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Most species of cacti have lost true leaves, having only spines, which are highly modified leaves, as well as defending against the herbivores. Spines help prevent water loss by reducing air flow close to the cactus. In the absence of leaves, enlarged stems carry out photosynthesis. These adaptations allow cactus species to grow in hot and dry places.
All the other 3 plants do not grow in dry and hot regions that is why their leaves are simple.
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In dry regions there is a lack of water. Due to which the structure of plant is made like this so that plant can save more water in dry regions. Leaves transpirat more water as compared to two thrones.
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