Q. No.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
1. Desert
2. Arctic and alpine tundra
3. Temperate forest
4. Grassland
Many freshwater animals cannot live for long in sea water and vice versa because of:
1. Buoyancy related problems
2. Lack of impermeable skins
3. Thermolabile enzymes
4. Osmotic considerations
Evolutionary biologists believe that “success” of mammals is largely due to their ability to:
1. Produce a large number of progeny
2. Live for a longer life span
3. Maintain a constant body temperature
4. Nurture young ones for longer periods
Kangaroo rat is capable of meeting all its water requirements through:
1. Storing water when available
2. Dry seeds and foliage
3. Metabolic water
4. Burrowing deep to get water
Desert lizards are able to keep their body temperature fairly constant by:
1. Physiological means
2. Anatomical means
3. Biochemical means
4. Behavioral means
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The human liver fluke depends on two intermediate hosts that are:
1. A crustacean and a fish
2. A snail and a fish
3. An echinoderm and a fish
4. Fishes of two different species
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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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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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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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