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
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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The fig tree is pollinated by a:
1. | Honeybee | 2. | Wasp |
3. | Bird | 4. | Moth |
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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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