Biology Objective Questions and Answers: Organisms and Populations
Explore reliable objective questions for Organisms and Populations tailored for NEET learners. Utilizing these Biology multiple-choice formats ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.
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Multiple Choice Questions
(a) Cosmopolitan
(b) Occur in a particular area
(c) Occur at high altitudes
(d) Occur on north pole
Show Answer & Explanation
Answer: (b) Occur in a particular area
Explanation:
1. Endemic species are confined to a particular geographical area and found nowhere else.
Teacher's Note:
1. Key fact: Endemic species are confined to a particular geographical area and found nowhere else.
2. Link this concept with the related terms in the chapter notes.
(a) Reproductive ability
(b) Secondary production
(c) Biotic potential
(d) Biomass
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Answer: (c) Biotic potential
Explanation:
1. The maximum rate of increase of a population under ideal conditions is its biotic potential (r).
Teacher's Note:
1. Key fact: The maximum rate of increase of a population under ideal conditions is its biotic potential (r).
2. Link this concept with the related terms in the chapter notes.
(a) These species has been extinct from other regions
(b) Continental separation
(c) There is no terrestrial route to these places
(d) Retrogressive evolution
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Answer: (b) Continental separation
Explanation:
1. Continental separation (drifting apart of land masses) isolated populations, so unique endemic species evolved in South America and Australia.
Teacher's Note:
1. Key fact: Continental separation (drifting apart of land masses) isolated populations, so unique endemic species evolved in South America and Australia.
2. Link this concept with the related terms in the chapter notes.
(a) Biotic potential
(b) Fertility
(c) Carrying capacity
(d) Birth rate
Show Answer & Explanation
Answer: (a) Biotic potential
Explanation:
1. Unrestricted reproductive capacity of a population is called its biotic potential.
Teacher's Note:
1. Key fact: Unrestricted reproductive capacity of a population is called its biotic potential.
2. Link this concept with the related terms in the chapter notes.
(a) Live in same niche
(b) Live in same habitat
(c) Interbreeding
(d) Live in different habitat
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Answer: (c) Interbreeding
Explanation:
1. Individuals of the same species can interbreed and produce fertile offspring; this defines a species.
Teacher's Note:
1. Key fact: Individuals of the same species can interbreed and produce fertile offspring; this defines a species.
2. Link this concept with the related terms in the chapter notes.
(a) Ecotone
(b) Niche
(c) Edge effect
(d) Ecotypes
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Answer: (a) Ecotone
Explanation:
1. The transition zone where two ecosystems overlap is an ecotone.
Teacher's Note:
1. Key fact: The transition zone where two ecosystems overlap is an ecotone.
2. Link this concept with the related terms in the chapter notes.
(a) Climax community
(b) Seral community
(c) Pioneer community
(d) Primary community
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Answer: (c) Pioneer community
Explanation:
1. The first community to colonise a bare area in succession is the pioneer community.
Teacher's Note:
1. Key fact: The first community to colonise a bare area in succession is the pioneer community.
2. Link this concept with the related terms in the chapter notes.
(a) Diatoms
(b) Lichens
(c) Moss & grasses
(d) Ferns
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Answer: (b) Lichens
Explanation:
1. Lichens are the pioneer colonisers of bare rock; they secrete acids that start soil formation.
Teacher's Note:
1. Key fact: Lichens are the pioneer colonisers of bare rock; they secrete acids that start soil formation.
2. Link this concept with the related terms in the chapter notes.
(a) Ecotone
(b) Climax community
(c) Seral community
(d) Ecosystem
Show Answer & Explanation
Answer: (b) Climax community
Explanation:
1. The final, stable stage of succession is the climax community.
Teacher's Note:
1. Key fact: The final, stable stage of succession is the climax community.
2. Link this concept with the related terms in the chapter notes.
(a) Plant community
(b) Animal ecosystem
(c) Plant ecosystem
(d) Ecological niche
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Answer: (a) Plant community
Explanation:
1. A group of two or more plant species living together in an area forms a plant community.
Teacher's Note:
1. Key fact: A group of two or more plant species living together in an area forms a plant community.
2. Link this concept with the related terms in the chapter notes.
(a) Sere community
(b) Climax community
(c) Dominant community
(d) Ecotone
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Answer: (b) Climax community
Explanation:
1. The stable community reached at the end of succession and in equilibrium with the climate is the climax community.
Teacher's Note:
1. Key fact: The stable community reached at the end of succession and in equilibrium with the climate is the climax community.
2. Link this concept with the related terms in the chapter notes.
(a) Mesophytic vegetation
(b) Xerophytic vegetation
(c) Halophytic vegetation
(d) Epiphytic vegetation
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Answer: (a) Mesophytic vegetation
Explanation:
1. Hydrarch succession in a water body ends in mesophytic vegetation as the water body is filled in.
Teacher's Note:
1. Key fact: Hydrarch succession in a water body ends in mesophytic vegetation as the water body is filled in.
2. Link this concept with the related terms in the chapter notes.
(a) Closely related species growing in the same area (in the same niche)
(b) Closely related species growing in different habitat
(c) Distantly related species growing in the same habitat
(d) Distantly related species growing in different habitat
Show Answer & Explanation
Answer: (a) Closely related species growing in the same area (in the same niche)
Explanation:
1. Competition is most intense between closely related species that occupy the same niche because they need identical resources.
Teacher's Note:
1. Key fact: Competition is most intense between closely related species that occupy the same niche because they need identical resources.
2. Link this concept with the related terms in the chapter notes.
(a) Grow free
(b) Kill their host
(c) Reproduce sexually
(d) Survive in soil
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Answer: (b) Kill their host
Explanation:
1. A successful parasite does not kill its host, since it depends on the host for survival.
Teacher's Note:
1. Key fact: A successful parasite does not kill its host, since it depends on the host for survival.
2. Link this concept with the related terms in the chapter notes.
(a) Parasitic relationship
(b) Saprophytic relationship
(c) Symbiotic relationship
(d) Epiphytic relationship
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Answer: (c) Symbiotic relationship
Explanation:
1. Mycorrhiza is a mutually beneficial (symbiotic) association between a fungus and plant roots.
Teacher's Note:
1. Key fact: Mycorrhiza is a mutually beneficial (symbiotic) association between a fungus and plant roots.
2. Link this concept with the related terms in the chapter notes.
(a) Survival of host.
(b) Growth of host.
(c) Reproduction potential of host.
(d) All of the above
Show Answer & Explanation
Answer: (d) All of the above
Explanation:
1. Parasites reduce the survival, growth and reproductive potential of the host.
Teacher's Note:
1. Key fact: Parasites reduce the survival, growth and reproductive potential of the host.
2. Link this concept with the related terms in the chapter notes.
(a) Community
(b) Population
(c) Ecosystem
(d) Biome
Show Answer & Explanation
Answer: (a) Community
Explanation:
1. A group of populations of different species living in an area is a community.
Teacher's Note:
1. Key fact: A group of populations of different species living in an area is a community.
2. Link this concept with the related terms in the chapter notes.
(a) Orchid
(b) Lianas
(c) Santalum
(d) Mango
Show Answer & Explanation
Answer: (a) Orchid
Explanation:
1. Orchids grow on other plants for support without harming them and are epiphytes.
Teacher's Note:
1. Key fact: Orchids grow on other plants for support without harming them and are epiphytes.
2. Link this concept with the related terms in the chapter notes.
(a) On the lithosphere
(b) In the hydrosphere
(c) In the lithosphere and hydrosphere
(d) In the lithosphere, hydrosphere and atmosphere
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Answer: (d) In the lithosphere, hydrosphere and atmosphere
Explanation:
1. Life exists in the lithosphere, hydrosphere and atmosphere, which together form the biosphere.
Teacher's Note:
1. Key fact: Life exists in the lithosphere, hydrosphere and atmosphere, which together form the biosphere.
2. Link this concept with the related terms in the chapter notes.
(a) Plants of the world
(b) Special plants
(c) Area occupied by living beings
(d) Plants of a particular area
Show Answer & Explanation
Answer: (c) Area occupied by living beings
Explanation:
1. The biosphere is the part of the earth occupied by living beings.
Teacher's Note:
1. Key fact: The biosphere is the part of the earth occupied by living beings.
2. Link this concept with the related terms in the chapter notes.
Download Chapter MCQs: NEET Biology Organisms and Populations
NEET Biology Organisms and Populations Objective Test Questions
Test your conceptual understanding of Organisms and Populations with these targeted multiple-choice questions. Designed in alignment with the latest NEET curriculum for NEET Biology, these problem sets build accuracy and prepare students for objective exams.
NCERT-Aligned Objective Questions and Solutions
Each question includes structured solution keys mapped directly to standard NEET textbooks, helping students evaluate their reasoning and correct mistakes early in their revision.
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FAQs
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