Q. No.Cuckoos laying their eggs in the nests of crow is an example of:
1.
Ectoparasitism
2.
Endopararsitism
3.
Hyperparasitism
4.
Brood parasitism
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An orchid growing as an epiphyte on a mango branch is an example of:
| 1. | Ectoparasitism | 2. | Endopararsitism |
| 3. | Commensalism | 4. | Mutualism |
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All the following relations are examples of commensalism except:
| 1. | Sea anemone and clown fish |
| 2. | Cattle egret and grazing cattle |
| 3. | Barnacles growing on the back of whale |
| 4. | Cuscuta growing on hedge plants |
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Lichens represent an intimate mutualistic relationship between a fungus and:
| 1. | an algae | 2. | a cyanobacterium |
| 3. | a brown alga | 4. | either 1 or 2 |
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In mycorrhiza, the fungi help the plant in:
1. Synthesis of high energy carbohydrates
2. Absorption of essential nutrients from the soil
3. Nitrogen fixation
4. Biocontrol of pathogens
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To get pollinated by a bee, the Mediterranean Orchid, Ophrys, employs:
1. Sexual deceit
2. Pseudo-copulation
3. Reward in the form of nectar
4. Place for laying eggs
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A population with a population pyramid that has an extremely broad base will most likely be:
| 1. | a rapidly expanding population |
| 2. | a stable population |
| 3. | a population where the birth rate equaled the death rate |
| 4. | a population where there were more old than young individuals |
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In the formula for exponential growth (dN/dt = rN), what does ‘r’ stand for?
| 1. | the carrying capacity of the environment |
| 2. | the change in time |
| 3. | the number of individuals in the population |
| 4. | the intrinsic rate of natural increase of the population |
The biome characterized by a mean annual temperature between 5C and 22C and mean annual precipitation between 5 cm and 50 cm is:
1. Desert
2. Arctic and alpine tundra
3. Temperate forest
4. Grassland
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