Tag: zoology

Questions Related to zoology

The asteroid which is believed to have collided with earth some 65 million years ago is

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. Apollo

  2. Vesta

  3. Ceres

  4. Gaspra.

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Correct Option: D

Which statements regarding response of organisms to abiotic factors in false?

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. All birds and mammals are capable of thermoregulation

  2. Majority of animals and nearly all plants cannot maintain a constant internal environment

  3. Shivering is a kind of exercise which produces heat and raises body temperature

  4. Very small animals are commonly found in polar regions as they have to spend less energy to generate heat

  5. Diapause is a stage of suspended development seen in zooplankton

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Correct Option: D

Select incorrect statement :

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. Orchid epiphytic on Mango is commensal

  2. Bird laying eggs in the nest of another for incubation shows brood parasitism

  3. Most animals and plants maintain a constant internal temperature

  4. Small animals are rare in polar regions

  5. One species harmed, other unaffected in amensalism

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Correct Option: C

The lowest temperature of any land mass of the universe was recorded in

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. North America (1949)

  2. Mt. Everest, Himalayas (1954)

  3. Antarctica (1982)

  4. Siberia (1947)

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Correct Option: D
Explanation:

The Siberian city of Yakutsk is the coldest in the world. It was -89.8$^0$C temperature in 1947. Coldest Temperature in North America was -62.8$^0$C in 1949. The temperature of Mt. Everest, Himalayas in 1954 was -36$^0$C. Antarctica's lowest temperature was recorded in 1982 and was -89.2$^0$C. 

Thus, the correct answer is option D.

Which one of the following is not a correct match of the term and its description?

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. Ecosystem - Functional unit of nature

  2. Global ecosystem - Entire biosphere

  3. Aquatic ecosystem - Wetland

  4. Natural ecosystem - Crop field

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Correct Option: D
Explanation:

Crop field is considered as man-made(anthropogenic or artificial) ecosystem. Natural ecosystem is developed in nature without human involvement, e.g., forest, ocean, etc.

The abiotic components of the environment are the living factors.

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. True

  2. False

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Correct Option: B
Explanation:
There are two major components of an ecosystem:
  • Abiotic components: These are non living components of environment and consist of two things, materials and energy (that may be light or chemical energy). Materials include water, minerals, salts, atmospheric gases etc.
  • Biotic components: These are living components of environment and divided into autotrophic and heterotrophic components. Autotrophic component is the producers or green plants while heterotrophic component includes consumers (primary, secondary and tertiary consumers) and decomposers.
Hence, the statement given in the question is incorrect.
So, the correct answer is 'False'. 

Which of the following is an ecosystem service provided by a natural ecosystem?

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. Cycling of nutrients

  2. Prevention of soil erosion

  3. Pollutant absorption and reduction of the threat of global warming

  4. All of the above

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Correct Option: D
Explanation:

The products of ecosystem processes which have environmental aesthetic and indirect economic value are named as ecosystem services. Soil formation and soil protection are the major ecosystem services accounting for nearly 50% of their total worth. Plant cover protects the soil from drastic changes in temperature. There is little wind or water erosion as soil particles are not exposed to them. The soil remains spongy and fertile. There are no landslides and no floods. The plant cover of natural ecosystem absorbs polluting gases, causes settling of suspended particulate matter, removes CO2 and releases O2. Purified air becomes available. There is no overall depletion of nutrients as the same as repeatedly circulated and recirculated. This keeps the fertility of soil intact.

So, the correct answer 'All of the above'.

The minimum temperature in the sea is .......... , while in freshwater ponds it never goes below ..........

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. -3$^o$C, 0$^o$C

  2. -10$^o$C, -4$^o$C

  3. 20$^o$C, -10$^o$C

  4. 25$^o$C, -100$^o$C

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Correct Option: A
Explanation:

The temperature of the surface waters varies mainly with latitude. The polar seas (high latitude) can be as cold as -2 degrees Celsius (28.4 degrees Fahrenheit), while the Persian Gulf (low latitude) can be as warm as 36 degrees Celsius (96.8 degrees Fahrenheit).
Temperature varies in ponds and lakes seasonally. During the summer, the temperature can range from $4^0$C near the bottom to $22^0$C at the top. During the winter, the temperature at the bottom can be $4^0$C, while the top is $0^0$C (ice).

Thus, the correct answer is option A.

Aquatic and terrestrial animals need sulphur and nitrogen to

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. Grow

  2. Transpire

  3. Evaporate

  4. Photosynthesis

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Correct Option: A

Scientists are able to determine the air temperature in the thermosphere by:

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. Using radiosondes

  2. Using temperature probes in orbiting satellites

  3. Observing changes in satellite orbits

  4. Direct measurements in manned, high-altitude balloons

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Correct Option: C