Which of the following is not a product of light reaction of photosynthesis?

1.	ATP	2.	NADH
3.	NADPH	4.	Oxygen

Which among the following is not a prokaryote?
1. Saccharomyces
2. Mycobacterium
3. Nostoc
4. Oscillatoria

Which of the following is a secondary pollutant?

$1.$ $\mathrm{CO}$

$2.$ ${\mathrm{CO}}_2$

$3.$ ${\mathrm{SO}}_2$

$4.$ ${\mathrm{O}}_3$

Natality refers to:
1. Death rate
2. Birth rate
3. Number of individuals leaving the habitat
4. Number of individuals entering the habitat

What type of ecological pyramid would be obtained with the following data? 

Secondary consumer: 120 g 

Primary consumer: 60 g 

Primary producer: 10 g

1. Inverted pyramid of biomass

2. Pyramid of energy

3. Upright pyramid of numbers

4. Upright pyramid of biomass