Q. No.Mycorrhiza is an example of:
1. Symbiotic relationship
2. Ectoparasitism
3. Endoparasitism
4. Decomposers
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Which of the following is a correct pair:
1. Cuscuta – parasite
2. Dischidia – insectivorous
3. Opuntia – predator
4. Capsella – hydrophyte
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Consider the following statements (A)-(D) each with one or two blanks:
| (A) | Bears go into ________ (1) _ during winter to ________ (2) _ cold weather. |
| (B) | A conical age pyramid with a broad base represents _________ (3) human population. |
| (C) | A wasp pollinating a fig flower is an example of ________ (4) _ . |
| (D) | An area with high levels of species richness is known as _________ (5) . |
Which of the following options, gives the correct fill-ups for the respective blank numbers from(1) to (5) in the statements?
| 1. | (1) - hibernation, (2) - escape, 3) - expanding, (5) - hot spot |
| 2. | (3) - stable, (4) - commensalism, (5) - marsh |
| 3. | (1) - aestivation, (2) - escape, (3) - stable, (4) - mutualism |
| 4. | (3) - expanding, (4) - commensalism, (5) - biodiversity park |
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Which one of the following is most appropriately defined:
| 1. | Amensalism is a relationship in which one species is benefited whereas the other is unaffected |
| 2. | Predator is an organism that catches and kills other organism for food. |
| 3. | Parasite is an organism which always lives inside the body of another organism and may kill it. |
| 4. | Host is an organism which provides food to another organism. |
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A mean annual temperature of 20 to 250C and a mean annual precipitation of 150 to 410 cm are characteristics of the biome:
1. Tropical forest
2. Coniferous forest
3. Grassland
4. Temperate forest
| 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. |
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Which of the following is a partial root parasite?
1. Sandalwood
2. Mistletoe
3. Orobanche
4. Ganoderma
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Ecotone is:
1. A polluted area
2. The bottom of a lake
3. A zone of transition between two communities
4. A zone of developing community
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