Question

Plant shows adaptations to hot and dry climate is- I) CAM II) Mycorrhizae III) $C4$ photosynthesis
A. I only
B. II only
C. I and II
D. I and III
E. I, II, III

Answer 1

In a biosphere only plants reside. The biosphere is a common term which refers to the biodiversity world where we are also included. It has various objectives of having a healthy succession. It includes- plants and animals majorly how well they are combined and sustaining or co-existing with the human world. plants live in a combined habitat over a long period of time for many years. The time scale can be measured in decades. Biodiversity is defined as a variety of different organisms discovered over a million years ago.

Complete answer:
Option A: I only- CAM plants grow in hot and dry climates due to lack of sufficient water. Crassulacean acid metabolism is a carbon-mediated pathway. Plants which survive in dry conditions are desert plants only. Desert plants as the name suggests are grown up in arid regions and they survive on less amount of water.
Option A is not correct.
Option B: II only- Mycorrhizae is the association between the legume plants and microbes. Microbes provides nutrition to legume plants and legumes in exchange to provide shelter to the microbes.
Option B is not the correct answer.
Option C: I and II- CAM and Mycorrhizae are both different aspects of plants. CAM plants can be grown in dry climatic conditions but not mycorrhizae.
Option C is not the correct answer.
Option D: I and III- CAM and C4 photosynthetic plants can be easily grown in deserts, where little or no rainfall and low amounts of water are available. C4 plants usually at night time undergo photosynthesis so that there will be prevention of water at night.
Option D is the correct answer.
Option E: I, II, III- Mycorrhizae cannot grow in a dry and hot climate. Hence all three options are impossible.
Option E is not correct.

Therefore, Option D is the correct answer.

Note:
As we discussed CAM plants and $C4$ plants. Desert plants have the same adaptations.
Replacing the lost water in desert plants is a little tougher as compared to other plants. If the desert plants do not get enough water the plant can die. So, these plants acquired some adaptations to help them reduce water loss. Smaller, fewer pores than other plants with such hot and dry winds are also prevented by nocturnal plants, desert plants act as nocturnal plants due the discussed reason transpiration occurs during day-time.