Biology – Class 12 Practice Test 9

1. The 10 individuals are born per year in a population, and the mid-year population is 5000. What is the birth rate of that area?

2. What is NPP equal to?

3. What is a frog that feeds on insects example of?

4. Who benefits the ungulates?

5. Who forms the new organic matter giving rise to secondary productivity?

6. The symbol given below each arrow indicates the loss of energy from an ecosystem. In what form is this energy lost?

7. Which one of the following is an example of commensalism?

8. Which one of the following is the correct sequence of a grassland food chain?

9. What is a biological interaction between organisms of different species in which each individual receives benefit known?

10. What is the missing level?
Autotrophs → ? → Decomposer