Insights Revision Plan for Prelims 2016: Test – 3

Tuna fishes are unique among fishes in their ability to maintain the temperature of their bodies above that of the surrounding water. This is because

In which of the following regions of earth or its constituents, life is NOT found?

1. In extreme acidic conditions of pH levels of 2 or below
2. Extreme hot springs where temperatures is above 80 °C
3. In ocean sediments where oxygen is absent

Select the correct answer using codes below:

A fish, which can live both in saltwater and freshwater, is

Application of photoperiodism is common in which of the following industries?

1. Poultry
2. Flower growing industry

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Consider the following statements:

1. In very high temperatures, humans sweat to bring down their body temperature
2. Thermoregulation is completely absent in plants

Which of the above statements is/are correct?

Which of the following statements convincingly explains why very small animals like shrews and humming birds are rarely found in polar regions.

Consider the following statements:

1. This National Park was known as Bharatpur Bird Sanctuary and is located in Bharatpur
2. It is a is a man-made and man-managed wetland
3. The sanctuary is one of the richest bird areas in the world and is known for nesting of resident birds and visiting migratory birds including water birds

This National Park is:

Many desert plants have a thick cuticle on their leaf surfaces and have their stomata arranged in deep pits to

Altitude sickness is caused because in the low atmospheric pressure of high altitudes, the body does not get enough oxygen, however gradually body acclimatizes. By which of the following means?

1. By increasing white blood cell production
2. By increasing the binding capacity of hemoglobin
3. By increasing breathing rate

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Which of the following contribute decrease in population density in a given habitat?

1. Natality
2. Immigration
3. Emigration
4. Mortality

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In which form of interaction, one species benefits and the other is neither harmed nor benefited?

Consider the following statements:

1. The productivity of the oceans is more than the productivity of lands
2. Abiotic factors like solar radiation and nutrients, and biotic factors like zooplankton predation contribute towards high ocean productivity

Which of the above statements is/are correct?

Consider the following statements:

1. Humus is highly resistant to microbial action and undergoes decomposition at an extremely slow rate
2. Due to colloidal nature it acts as moisture and nutrient reservoir

Which of the above statements is/are correct?

Consider the following statements:

1. In an aquatic ecosystem, Detritus Food Chain is the major conduit for energy flow
2. Detritus Food Chain is mainly made up of decomposers

Which of the above statements is/are correct?

A Hummingbird is primarily a

Consider the following statements:

1. The pyramid of biomass in sea is generally inverted
2. Pyramid of energy is always upright, can never be inverted

Which of the above statements is/are correct?

The Salim Ali Centre for Ornithology and Natural History (SACON) is located in

In the successive seral stages of an ecology

1. There is a change in the diversity of species of organisms
2. Decrease in the number of species and organisms
3. Decrease in the total biomass

Which of the above is/are correct?

Which of the following reasons explain why tropical regions are rich in biological diversity?

1. Tropical latitudes have remained relatively undisturbed for millions of years
2. Tropical environments, unlike temperate ones, are less seasonal, relatively more constant and predictable
3. There is more solar energy available in the tropics

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Which of the following species are Extinct?

1. Dodo (Mauritius)
2. Quagga (Africa)
3. Steller’s Sea Cow (Russia)
4. Sumatran Tiger
5. Caspian Tiger

Select the correct answer using codes given below:

The houses of A and B face each other on a road going north-south, A’s being on the western side. A comes out of his house, turns left, travels 5 km, turns right, travels 5 km to the front of D’s house. B does exactly the same and reaches the front of C’s house. In this context, which one of the following statements is correct?

In a queue, Mr. X is fourteenth from the front and Mr. Y is seventeenth from the end, while Mr. Z is exactly in between Mr. X and Mr. Y. If Mr. X is ahead Mr. Y and there are 48 persons in the queue, how many persons are then between Mr. X and Mr. Z ?

Two glasses of equal volume are respectively half and three-fourths filled with milk. They are then filled to the brim by adding water. Their contents are then poured into another vessel. What will be the ratio of milk to water in this vessel?

Consider the following statements:

1. All machines consume energy

2. Electricity provides energy

3. Electrically operated machines are cheap to maintain

4. Electrically operated machines do not cause pollution.

Which one of the following inferences can be drawn from the above statements?

Examine the following statements:

1. None but the rich ran afford air-travel.

2. Some of those who travel by air become sick

3. Some of those who become sick require treatment

Which one of the following conclusions can be drawn from the above statements?