4481: With reference to food chains. In ecosystems, consider the following statements:
1. A food chain illustrates the order in which a chain of organisms feed upon each other.
2. Food chains are found within the populations of a species.
3. A food chain illustrates the numbers of each organism which are eaten by others.
Which of the statements given above is/are correct?
(a) 1 only
(b) 1 and 2 only
(c) 1, 2 and 3
(d) None
4482: Which of the following types is used by computed tomography employed for visualization of the internal structure of human body ?
(a) Magnetic resonance
(b) X-rays
(c) sound Waves
(d) Radioisotopes
4483: Which of the following is not an alloy?
(a) Brass
(b) Bronze
(c) Steel
(d) Zinc
4484: "Ghadar party" in U.S.A. was formed by:
(a) V. D. Savarkar
(b) Lala Har Dayal
(c) Swami Varma
(d) Raja Pratap Singh
4485: Which of the following would include Foreign Direct Investment in India?
1. Subsidiaries of companies in India
2. Majority foreign equity holding in Indian companies
3. Companies exclusively financed by foreign companies
4. Portfolio investment
Select the correct answer using the codes given below :
(a) 1, 2, 3 and 4
(b) 2 and 4 only
(c) 1 and 3 only
(d) 1, 2 and 3 only