Prelims

Which of the following leaf modifications occur(s) in the desert areas to inhabit water loss?
1. Hard and waxy leaves
2. Tiny leaves
3. Thorns instead of leaves
Select the correct answer using the code given below:

With reference to ‘Red Sanders’, sometimes seen in the news, consider the following
statements:
1. It is a tree species found in a part of South India.
2. It is one of the most important trees in the tropical rain forest areas of South India.
Which of the statements given above is/are correct?

With reference to Neem tree, consider the following statements:
1. Neem oil can be used as a pesticide to control the proliferation of some species of insects and
mites.
2. Neem seeds are used in the manufacture of biofuels and hospital detergents.
3. Neem oil has applications in pharmaceutical industry.
Which of the statements given above is/are correct?

Which of the following leaf modifications occurs/occur in desert areas to inhibit water loss?
(1). Hard and waxy leaves
(2). Tiny leaves or no leaves
(3). Thorns instead of leaves
Select the correct answer using the codes given below.

When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because?

A state in India has the following characteristics:
1. Its northern part is arid and semi-arid.
2. Its central part produces cotton.
3. Cultivation of cash crops is predominant over food crops. Which one of the following states has all of the above characteristics?

Among the following states, which one has the most suitable climatic conditions for the cultivation of a large variety of orchids with minimum cost of production, and can develop an export-oriented industry in this field?

In India, which type of forest among the following occupies the largest area?

Consider the following :
1. Camphor
2. Chicory
3. Vanilla
Which of the above is/are plant product(s) ?

Which one of the following is not essentially a species of the Himalayan vegetation?