1 Answers
Option 1 : (a), (b), (c)
Concept-
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.
[ alt="F1 Madhuri Teaching 03.05.2022 D4" src="//storage.googleapis.com/tb-img/production/22/05/F1_Madhuri_Teaching_03.05.2022_D4.png" style="width: 380px; height: 296px;">
Explanation-
(a) Leaves are in the form of spines- The leaves of the cactus plant are modified into the spine since it assists them with losing less water during transpiration and furthermore protects them from being eaten by animals. Hence, this statement is correct.
(b) Stem is succulent and performs the function of the leaf- The modified stem of the cactus is referred to as "succulent" since it contains specific tissues for effective storage of water. The stems are green coloured and perform photosynthesis instead of leaves. Hence, this given statement is also correct.
(c) Stem is covered with a thick layer of wax- The stem of the cactus is covered with a thick layer to retain the water. Hence this statement is also correct.
(d) Roots lie near the surface- The cactus has long deep roots for the better absorption of water, and they don't lie near the surface. Hence this statement is incorrect.
So from the above explanation option (1) is correct.