Ecology is basically concerned with four levels of biological organization, which one of the following is
correct representation?

1. Population  Ecosystem  Biome  Landscape.

2. Communities  Population  Ecosystem  Biome.

3. Organisms  Population  Communities  Biome.

4. Species  Ecosystem  Communities  Biome.

Subtopic:  Introduction to Ecology |
 87%
From NCERT
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The type of population interaction exhibited by visiting flamingos and resident fishes in South American Lakes, is also shown by

1. Sparrow eating any seed.

2. Cuckoo and crow.

3. Abingdon tortoise and goats in Galapagos island.

4. Sea anemone and clown fish.

Subtopic:  Population Interactions: Competition |
 84%
From NCERT
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Niche is:
1. All the biological factors in the organism environment
2. The physical space where an organism lives
3. The range of temperature that the organism needs to live
4. The functional role played by the organism where it lives
Subtopic:  Introduction to the Chapter |
 73%
From NCERT
NEET - 2018
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Natality refers to:
1. Death rate
2. Birth rate
3. Number of individuals leaving the habitat
4. Number of individuals entering the habitat

Subtopic:  Population Characters: Natality & Mortality |
 87%
From NCERT
NEET - 2018
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In a growing population of a country:
1. pre-reproductive individuals are more than reproductive individuals.
2. reproductive individuals are less than post-reproductive individuals.
3. reproductive and pre-reproductive individuals are equal in number.
4. pre-reproductive individuals are less than reproductive individuals.
Subtopic:  Population Attributes |
 85%
From NCERT
NEET - 2018
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Which one of the following population interactions is widely used in medical science for the production of antibiotics ?

1. Commensalism
2. Mutualism
3. Parasitism
4. Amensalism

Subtopic:  Population Interactions: Amensalism |
 61%
NEET - 2018
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It is much easier for a small animal to run Uphill than for a large animal, because?
 
1. Smaller animals have a higher metabolic rate
2. Small animals have a lower O2 requirement
3. The efficiency of muscles in large animals is less than, in the small animals
4. It is easier to carry a small body weight

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) | Adaptations (OLD NCERT) |
 51%
NEET - 2016
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According to Darwin, organic evolution is due to:

1.  Interspecific competition.
2.  Competition within closely related species.
3.  Reduced feeding efficiency in one species due to the presence of interfering species.
4.  Intraspecific competition.

Subtopic:  Population Interactions: Competition |
 67%
From NCERT
AIPMT - 2013
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What type of human population is represented by the following age pyramid? 

  
1.  Stable population
2.  Declining population
3.  Expanding population
4.  Vanishing population
Subtopic:  Population Characters: Age Structure & Migration |
 84%
From NCERT
AIPMT - 2011
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Which one of the following is categorized as a parasite in a true sense?
1. Human foetus developing inside the uterus draws nourishment from the mother
2. Head louse living on the human scalp as well as laying eggs on human hair
3. The cuckoo (koel) lays its eggs in a crow's nest
4. The female Anopheles bites and sucks blood from humans
Subtopic:  Population Interactions: Parasitism |
 69%
From NCERT
AIPMT - 2011
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