Niche
Trending Questions
Q.
What are Ecological Equivalents?
Q. Assertion: No two species can occupy the same ecological niche in a habitat
Reason: A habitat can contain only one ecological niche.
Reason: A habitat can contain only one ecological niche.
- Both assertion and reason are true and the reason is the correct explanation of assertion
- Both assertion and reason are true but reason is not the correct explanation of assertion
- Assertion is true but reason is false
- Assertion is false and reason is true
Q. Competition for food, light and space is most severe in:
- Closely related species growing in the same area (in the same niche)
- Closely related species growing in different habitat
- Distantly related species growing in the same habitat
- Distantly related species growing in different habitat
Q. Match column I with column II and select the correct option.
Column I | Column II |
(i) Dodo | A. Africa |
(ii) Quagga | B. Russia |
(iii) Thylacine | C. Mauritius |
(iv) Steller's sea cow | D. Australia |
- i-A, ii-C, iii-B, iv-D
- i-D, ii-C, iii-A, iv-B
- i-C, ii-A, iii-B, iv-D
- i-C, ii-A, iii-D, iv-B
Q. Carnivorous animals like lions, leopards occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as
- character displacement
- altruism
- resource partitioning
- competitive exclusion
Q. What is the habitat and niche? explain with example
Q. One species is harmed whereas the other is unaffected. Such type of interaction is called
- Predation
- Amensalism
- Parasitism
- Commensalism
Q. Select the option that correctly identifies whether the statements (I-III) are true (T) or false (F).
I. Population density is always measured in terms of number only
II. The size of the population can be estimated indirectly without actually counting or seeing the organisms
III. Absolute population densities are considered when the population is very large and counting becomes difficult
I. Population density is always measured in terms of number only
II. The size of the population can be estimated indirectly without actually counting or seeing the organisms
III. Absolute population densities are considered when the population is very large and counting becomes difficult
- I-T, II-F, III-T
- I-F, II-T, III-F
- I-T, II-T, III-F
- I-T, II-F, III-F
Q.
The functional aspect of a species with reference to the place of occurrence is called
Ecology
Species
Environment
Ecological niche
Q. Niche overlap indicates
- Active cooperation between two species
- Two different parasites on the same host
- Sharing of one or more resources between the two species
- Mutualism between two species
Q. Select the incorrect statement with respect to ecological niche.
- It represents functional role and status of a species in the environment
- It is a component of habitat which is governed by functioning of an organism
- It describes how an organism or population responds to the distribution of resources
- It represents trophic position of a few species in the environment
Q. The term "niche" of a species refers to
- range of temperatures it can tolerate
- resources it utilises
- its functional role in the ecological system
- all of the above
Q.
Why living things live in different habitats?
Q. Niche is
The range of temperature the organisms needs to live in.
The physical space an organism lives in
All biological factors in the organism’s environment
- The functional role played by the organism where it lives
Q.
Ecological niche is:
the surface area of the ocean
an ecologically adapted zone
the physical position and functional role of a species within the community
formed of all plants and animals living at the bottom of a lake
Q. The natural environment of plant or animal species, where it lives, multiples, and thrives naturally __________.
Q. Assertion :No two species can occupy the same ecological niche in a habitat.
Reason: A habitat can contain only one ecological niche.
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- Assertion is correct but Reason is incorrect
- Both Assertion and Reason are incorrect
Q. Niche of an organism denotes
- Habitat
- On whom the organism feeds
- Status of organism within community
- All of the above
Q. The difference between a habitat and a niche is that, a niche is
- Clements
- Odum
- Grinnel
- Warming
Q. Niche overlap indicates
- Active cooperation between two species
- Two different parasites on the same host
- Sharing of one or more resources between the two species
- Mutualism between two species
Q.
Ecological niche of an organism represents
The resources it utilizes
Functional role in the ecological system
The range of conditions it can tolerate
All of these
Q. An organism has to interact with the habitat to induce favourable changes in it. This role of organism in its habitat is called ___ .
- Ecological Succession
- Ecological Survival
- Ecological Niche
- Ecological Remodeling
Q. If the number of species increase in any natural park it can be due to
- Intraspecific competition
- Interspecific competition
- Emigration
- Mutualism
Q. Niche represents
- Microhabitat
- Habitat
- Habitat as well as inter-relations
- Habitat as well as climate
Q. The role of an organism in ecological system is known as
- Habitat
- Interaction
- Niche
- Herbivory
Q. Abundance of a species population within its habitat is called as
- Absolute density
- Regional density
- Niche density
- Relative adensity
Q. Niche overlap is
- Active cooperation between two species
- Mutualism between two species
- Sharing resources between two species
- Two different parasites on same host
Q. A group of red beetles lives on green leaves of a tree. Beetles multiply through sexual reproduction. One day, some green beetles are seen among the red beetles. Green beetles breed to produce green progeny. Crows on the tree eat beetles. The colour composition of the beetle population is likely to change in the following manner.
- More green beetles survive than the red
- More red beetles survive than the green
- Both red and green beetle survive equally
- Only the red beetle survives
Q. If the number of species increase in any natural park it can be due to
- Intraspecific competition
- Interspecific competition
- Emigration
- Mutualism
Q. In which type of isolation, two species living in different habitats are prevented from interbreeding :
- Behavioural
- Ecological
- Temporal
- Genetic