Cacti have evolved unique adaptations for desert environments. Which part of the plant body is the cactus stem a modified version of?

✅Explanation: In cacti, the stem is modified to perform functions that are typically associated with leaves. This adaptation allows cacti to thrive in arid desert environments. The modifications include:

• Photosynthesis:
-Since cacti lack typical leaves, the green stem contains chlorophyll and is responsible for photosynthesis.

• Water Storage:
-The stem is thick and fleshy, adapted to store water for long periods.

• Spines:
-Cactus spines are modified leaves that reduce water loss and protect the plant from herbivores.

• Reduced Surface Area:
-By using stems for photosynthesis, the plant minimizes surface area to reduce water loss through transpiration.

📌📌Other Options:
-(a) Root: The root system in cacti is adapted for water absorption.
-(c) Leaf: In cacti, leaves are modified into spines, and they do not carry out photosynthesis.

🛑Aditional Information:
A cactus plant can survive in the desert because of the following features-
– It has long roots that dive deep inside the soil for absorbing water.
– Its leaves are modified as spines to prevent water loss due to transpiration.
– Its stem is covered with a thick waxy layer to hold water.
-Large and fleshy stems for water storage.
-Thorns and glossy spiky leaves decrease the loss of water.
-Spikes shield cactus from animals that try to utilize stored water.