MCQs on Organisms and Populations

MCQs on Organisms and Populations

1. A group of populations of two or more species occupying the same geographical area at the same time is called
1. Ecosystem
2. Commensalism
3. Interaction
4. Community

2. Biotic factors include
1. Plants and animals
2. Water temperature, fish
3. Plants, animals and physical environment
4. None of the above

3. An organism that lives in or on another organism and derives nutrients for itself at the expense of the host organism is called _______
1. Scavenger
2. Prey
3. Predator
4. Parasite

4. A population that exhibits birth rates that are identical to the death rate implies
1. Initial growth
2. Plateau phase
3. Acceleration Phase
4. None of the above

5. An example of a terrestrial gastropod is
1. Sea hares
2. Nudibranch
3. Garden snail
4. None of the above

6. Antifreeze proteins or AFPs enable organisms that possess it to
1. Survive high temperatures
2. Survive extreme pressure
3. Survive subzero temperatures
4. None of the above

7. A group of individuals from different species living in the same habitat and exhibiting functional interactions is called
1. Biotic community
2. Population
3. Ecosystem
4. None of the above

8. Xerocoles are
1. Animals adapted to live in the tundra
2. Animals adapted to live in deserts
3. Animals adapted to live in the deep sea
4. Animals adapted to a nocturnal lifestyle

9. Fossorial refers to
1. Animals that turned into fossils
2. Animals that are adapted to burrowing
3. Animals that are adapted to climbing
4. None of the above

10. _________ is the unrestricted growth of populations, which will result in the maximum growth of that population
1. Biotic Potential
2. Nutritive potential
3. Uricotelism
4. None of the above

11. Crassulacean acid metabolism in plants helps to __________
1. Serves no function
2. Retain water
3. Increase resistance to disease
4. None of the above

12. Niche Density is _________
1. Extinction of species in a new habitat
2. A New emerging population of species in a new habitat
3. The abundance of a population of species outside its habitat
4. The abundance of a population of species within its habitat

13. Xerophytes generally do not possess ________
1. A thick cuticle
2. Spongy Parenchyma
3. Specialized mechanical tissue
4. Well-developed conducting tissue

14. Competition is most fierce between
1. Unrelated species in the same environment_
2. Two or more closely related species in the same environment
3. Two or more closely related species in a different environment
4. None of the above

15. Mimicry is
1. An evolved resemblance between an organism and an object
2. An adaptation made for finding mates
3. An adaptation for surviving temperature fluctuations
4. None of the above

Answer Keys for Organisms and Population MCQs
Question Number Answer Key
1 4
2 1
3 4
4 2
5 3
6 3
7 1
8 2
9 2
10 1
11 2
12 4
13 2
14 2
15 1