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Class 12 Biology Chapter 13 Organisms And Populations Quiz 3 (25 MCQs)

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1. Synecology is study of inter-relationship between an environment and
2. Which of the following is an ABIOTIC factor that could affect BIOTIC factors?
3. An organisms in an environment is a .....
4. A population has more young individuals compared to the older individuals. What would be the status of the population after some years?
5. The growth rate of a local population is dependent on the birth rate minus the death rate and .....
6. Fish dying when the temperature goes too high is an example of .....
7. What will happen if a factor that a species is dependent on decreases?
8. Vertical distribution of different species occupying different levels in a biotic community is known as:
9. Black walnut trees produce a nontoxic chemical that becomes highly toxic when it is exposed to air or soil. How does this chemical help black walnut trees compete with plants growing nearby?
10. Which of these is an example of one living thing depending on another living thing?
11. Living, or produced by living things
12. Which of the following describes an interaction between a biotic factor and an abiotic factor?
13. In which of the following interactions both partners are adversely affected?
14. Nonliving elements in an ecosystem are called .....
15. Animals from two different species utilize the same source of nutrition in one area. It is most accurate to say that the animals .....
16. A group of organisms that are similar to one another and can mate to produce offspring
17. Which would be the impact on producers and consumers if the decomposers in an ecosystem suddenly disappeared?
18. Temperature, light, air, water, and climate are all ..... factors of the environment.
19. Which of the following would be an abiotic limiting factor for oysters living in the Chesapeake Bay?
20. Basic unit of ecological hierarchy is-
21. Source or supply from which benefit is produced
22. Which of the following countries has the highest biodiversity?
23. In a given area, if the population of predators increases, the population of prey will .....
24. Major biomes of India include-
25. What does a population consist of?
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