The population with the following age pyramid:

 

1. Will grow exponentially in near future

2. Will grow steadily in the future

3. Is likely to remain stable in future

4. Is likely to decline in future

Subtopic:  Population Attributes |
 70%
From NCERT
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Mycorrhizal hyphae helps in:
1. absorbing minerals and ions
2. maintaining cell shape
3. increasing cellular respiration
4. anchoring a plant

Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 84%
From NCERT
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Earliest vascular plants on land acquired water and mineral nutrients most likely by:
1. absorption by trichomes.
2. diffusion through stomata.
3. the help of symbiotic mycorrhizae.
4. osmosis through the root hairs.

Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 61%
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Epiphytes:
1. are aerial vines common in tropical regions
2. are parasitic and use haustoria
3. live in oligotrophic soil and digest insects to obtain nitrogen
4. grow on other plants but do not obtain nutrients from their hosts

Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 68%
From NCERT
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The endosymbiosis between early eukaryotes and the prokaryote lineage would be an example of:

1.Commensalism2.Mutualism
3.Parasitism4.Competition

Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 74%
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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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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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Population size in any given habitat is also known as _______

(1) Population cluster    

(2) Population explosion

(3) Population abundance   

(4) Population density

Subtopic:  Population Characters: Density |
 93%
From NCERT
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Select the incorrect statement

(1) Organisms living in oceans, lakes and rivers do not face any water related problems.

(2) Productivity and distribution of plants is dependent on water.

(3) The levels of thermal tolerance of different species determine to a large extent their geographical distribution

(4) Foraging, reproductive and migratory activities of some animals are dependent on seasonal variations in light

Subtopic:  Abiotic Factors: Light & Water (OLD NCERT) |
 89%
From NCERT
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Smaller animals tend to lose body heat very fast as compared to larger animals because they have

(1) Higher surface to volume ratio.

(2) Lower surface to volume ratio.

(3) Equal values of surface and volume.

(4) Very low BMR (basal metabolic rate).

Subtopic:  Adaptations (OLD NCERT) |
 87%
From NCERT
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