Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

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

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

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Small animals have a large surface area relative to their volume, causing them to lose body heat very rapidly in cold environments. Therefore, they are rarely found in polar regions because the energy cost to maintain body temperature is too high.

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

Select incorrect statement :

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Most animals and plants cannot maintain a constant internal environment (homeostasis) in the face of changing external conditions; they are conformers, not regulators.

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

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

  1. North America (1949)

  2. Mt. Everest, Himalayas (1954)

  3. Antarctica (1982)

  4. Siberia (1947)
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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

  1. Ecosystem - Functional unit of nature

  2. Global ecosystem - Entire biosphere

  3. Aquatic ecosystem - Wetland

  4. Natural ecosystem - Crop field
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

The abiotic components of the environment are the living factors.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
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'. 
Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

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

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.

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

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

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

Aquatic and terrestrial animals need sulphur and nitrogen to

  1. Grow

  2. Transpire

  3. Evaporate

  4. Photosynthesis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sulphur and nitrogen are essential nutrients for the synthesis of proteins and other biological molecules required for growth in all living organisms. Other options like transpiration or photosynthesis are specific physiological processes that do not directly explain the fundamental need for these elements.

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

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

  1. Using radiosondes

  2. Using temperature probes in orbiting satellites

  3. Observing changes in satellite orbits

  4. Direct measurements in manned, high-altitude balloons
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The thermosphere is too high for balloons and radiosondes, and satellites orbit within it, making direct temperature probes difficult due to the low density of air. Scientists instead infer the temperature by observing the drag effects on satellite orbits, which are directly influenced by the density and temperature of the thermosphere.