Organisms and Populations - Online Test
Q1. Biotic components of a habitat includes
Answer : Option B
Explaination / Solution:
Biotic components include all living organisms present in an ecosystem. Competitors and predators are biotic components of habitat.
Q2. Which of the following is/are poikilotherm:
Answer : Option C
Explaination / Solution:
The organisms that can change their body temperature according to environment are called poiklotherm or cold blooded animals. Tapeworm and naked mole rat are examples of cold blooded animals.
Q3. Select the mismatched pair out:
Answer : Option B
Explaination / Solution:
The term ecology, silent spring and ecosystem were coined by Haeckel, Carson and Tansley respectively. The term biome was not coined by Hutchinson.
Biome, as coined and applied by Clements, was not the ecosystem.
Q4. Examples of artificial ecosystem is/are:
Answer : Option A
Explaination / Solution:
Artificial ecosystems are man-made ecosystem. Crop field and aquarium are examples of artificial ecosystem as they are man-made.
Q5. Which of the following statements is/are incorrect:
Answer : Option B
Explaination / Solution:
Inside the human intestine a number of microbes lives that helps in digestion of food and formation of vitaminK. so, human intestine is also an unique habitat.
Q6. CAM is a special photosynthetic pathway found to be present as adaptation within:
Answer : Option C
Explaination / Solution:
Crassulacean acid metabolism photosynthesis pathway is present as adaptation in xerophytes in which stomata opens during night to prevents loss of water by transpiration.
Q7. Any habitat can support growth of limited number of individuals only called:
Answer : Option C
Explaination / Solution:
Carrying capacity of a habitat is the maximum number of individual that can survive in given habit. There is a limitation of food, water and space in a habitat so only limited numbers of individual survive.
Q8. Interactions between different species living within a particular area may be:
Answer : Option B
Explaination / Solution:
Interactions between different species living within a particular area may be useful as in case of mutualism, fatal as in case of parasitism or neutral in which no one is harmed.
Q9. Interacting members of species live close to each other in following interaction/s:
Answer : Option A
Explaination / Solution:
Individual organisms live together in an ecosystem and depend on one another. In fact, they have many different types of interactions with each other, and many of these interactions are critical for their survival.
Interacting members of species live close to each other in commensalism, predation and parasitism.
Q10. For which of the following would you expect distribution range to be badly affected if average Global temperature keeps increasing:
Answer : Option A
Explaination / Solution:
A majority of organisms are restricted to narrow range of temperature. Such organisms are called stenothermal species. The distribution range of these species will be adversely affected if average global temperature keeps increasing.
