Question

Which is a modification into the spine in a cactus plant? Stems Leaves Buds

Answer 1

The correct answer will be option-leaves

Step-by-step explanation:

Cactus is a xerophytic plant which is adapted to grow in the dry conditions or low amount of water.

They show adaptation to growing in the extreme conditions by modifying their leaves into the spines to prevent the loss of water and stems to become photosynthetic and storing the water. Their leaves become microscopic and the spines are arranged in clusters.

Thus, leaves are the correct answer.

Answer 2

The correct answer is leaves, spines are modified leaves.

Explanation:

Cactus have spines, the thorn-like thing, in which replace leaves. These spines lower the surface area of the cacti reducing water loss. These spines are actually advance modified leaves which rise according to their environmental conditions.

The stem of a cactus is also thick and fleshy which allows it to store water. The cacti's stem also has a waterproof waxy kind of layer to help retain more water.

Thus, the spines of a cactus plant are nothing but a modified leaf.