3276: With reference to the food chains in ecosystems, which of the following kinds of organism is / are known as decomposer organism / organisms?
1. Virus
2. Fungi
3. Bacteria
Select the correct answer using the codes given below.
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
3277: Strips of two metals A and B are firmly joined together as shown in the figure.
3278: Corpus luteum is a mass of cells found in
(a) brain
(b) ovary
(c) pancreas
(d) spleen
3279: Which of the following discoveries is/are associated with Einstein?
(i) Theory of relativity
(ii) Quantum theory
(iii) Radio activity
(iv) Rocket propulsion
(a) (i) & (ii)
(b) (i), (ii) & (iii)
(c) (i), (ii) & (iv)
(d) (i) only
3280: The new Gross Domestic Product (GDP) series released by the Central Statistical Organisation (CSO) in February 1999 is with reference to base price of
(a) 1991-92
(b) 1992-93
(c) 1993-94
(d) 1994-95