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Q. No.Select the organism which shows the below graph for its homeostasis.
1. Humans
2. Nearly all plants
3. Mammals-
4. All birds
Subtopic: Response of Organisms to Abiotic Factors (OLD NCERT) |
63%
From NCERT
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Select the correct option for the given age pyramid.
| 1. | This is stable population |
| 2. | Pre reproductive individuals are equal to post- reproductive individuals |
| 3. | This pyramid is shown by developing or growing countries |
| 4. | In this pyramid number of females will be more than males always |
Subtopic: Population Characters: Age Structure & Migration |
84%
From NCERT
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Read the following statements and state true (T) or false (F) for them.
| A: | The level of thermal tolerance of different species determine to a large extent their geographical distribution. |
| B: | A vast majority of organisms are stenothermal. |
| A | B | |
| 1. | T | F |
| 2. | F | T |
| 3. | T | T |
| 4. | F | F |
Subtopic: Abiotic Factors: Temperature (OLD NCERT) |
70%
From NCERT
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State true (T) or false (F) for the following statements and select the correct option
| A: | Soil composition, grain size and aggregation determine the percolation and water holding capacity of the soil. |
| B: | Not all the colour components of the visible spectrum are available for marine plants living at different depths of the ocean. |
| A | B | |
| 1. | T | F |
| 2. | F | T |
| 3. | T | T |
| 4. | F | F |
Subtopic: Abiotic Factors: soil |
88%
From NCERT
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The clownfish gets protection from predators with the help of sea anemone but sea anemone does not appear to derive any benefit by hosting the clownfish. This type of interaction is
1. Proto-cooperation
2. Mutualism
3. Parasitism
4. Commensalism
1. Proto-cooperation
2. Mutualism
3. Parasitism
4. Commensalism
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
90%
From NCERT
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Read the following statements and select the correct option.
1. Only statement A is correct
2. Only statement B is correct
3. Both statements A and B are correct
4 Both statements A and Bare incorrect
| A: | Allen's rule states that mammals from colder climates generally have shorter ears and limbs to minimize heat loss. |
| B: | Antarctic fishes can survive below 0°C. |
1. Only statement A is correct
2. Only statement B is correct
3. Both statements A and B are correct
4 Both statements A and Bare incorrect
Subtopic: Adaptations (OLD NCERT) |
88%
From NCERT
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Population size of a given area or space can be determined by many ways. One of the methods called total number count is not useful for
1. Siberian cranes at Bharatpur wetlands
2. Humans living in city Delhi
3. Dense culture of bacteria in a petri dish
4. Total number of trees in a particular small area
1. Siberian cranes at Bharatpur wetlands
2. Humans living in city Delhi
3. Dense culture of bacteria in a petri dish
4. Total number of trees in a particular small area
Subtopic: Population Attributes |
74%
From NCERT
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The prickly pear cactus when introduced into Australia in the early 1920's caused havoc by . spreading rapidly into millions of hectares of rangeland because
1. The soil of invaded land was fertile for cactus.
2. It was cultivated for its economic importance
3. The invaded land did not have its natural predators
4 It was not eaten by humans but by animals only
1. The soil of invaded land was fertile for cactus.
2. It was cultivated for its economic importance
3. The invaded land did not have its natural predators
4 It was not eaten by humans but by animals only
Subtopic: Population Interactions: Predation |
91%
From NCERT
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Which of the following algae are found most abundantly at shallowest and greatest depth of sea water respectively?
1. Red algae and green algae
2. Red algae and flrown algae
3. Green algae and red algae
4. Brown algae and red algae
1. Red algae and green algae
2. Red algae and flrown algae
3. Green algae and red algae
4. Brown algae and red algae
Subtopic: Abiotic Factors: Light & Water (OLD NCERT) |
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In a population interaction, any of the species is not benefited in any way. This interaction may be
1. Mutualism
2. Commensalism
3. Amensalism
4. Parasitism
1. Mutualism
2. Commensalism
3. Amensalism
4. Parasitism
Subtopic: Population Interactions: Amensalism |
81%
From NCERT
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