Tag: biology

Questions Related to biology

______ is the most dangerous soil contaminant.

biology wastewater story origin of waste products waste generation waste and its types

  1. Organic waste

  2. Radioactive waste

  3. Chemical fertilizer

  4. Both A and B

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Correct Option: B
Explanation:

Radioactive substances resulting from explosions of nuclear testing laboratories and industries giving rise to nuclear dust radioactive wastes, penetrate the soil and accumulate giving rise to land/soil pollution.

Wastewater released from home, industries, hospitals is called as

biology wastewater story origin of waste products waste generation waste and its types

  1. Sludge

  2. Potable water

  3. Freshwater

  4. Sewage

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Correct Option: D

Edaphic factors are included in

origin of universe universe and organic evolution biology

  1. Abiotic components

  2. Biotic components

  3. producers

  4. consumers

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Correct Option: A
Explanation:

Edaphic factor is an abiotic factor relating to the physical or chemical composition of the soil found in a particular area. The edaphic factors are the abiotic factors with respect to the soil. These factors include; soil texture, soil air, the temperature of the soil,  soil water etc

So, the correct answer is 'Abiotic components'

Term biosphere is used for the zone of earth where life exists

origin of universe universe and organic evolution biology

  1. On lithosphere

  2. In the hydrosphere

  3. In the lithosphere and hydrosphere

  4. In the lithosphere, hydrosphere and atmosphere

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Correct Option: D

What is function of biosphere?

origin of universe universe and organic evolution biology

  1. Competes for resources

  2. Cause destruction

  3. to sustain life

  4. Living and non living organism

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Correct Option: C

Which of the following is limiting factor in the productivity of the ocean:-

origin of universe universe and organic evolution biology

  1. NItrogen

  2. Phosphorous

  3. Magnesium

  4. Both A and B

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Correct Option: D
Explanation:
The amount of primary production depends on a variety of environmental factors. These factors include the availability of essential inorganic nutrients, particularly nitrogen and phosphorus; water temperature; and the turbidity of the water. Open oceans have relatively low primary productivity because of low levels of the essential nutrients nitrogen and phosphorus. So, the correct option is 'Both A and B'.

"To meet with the deficit which occurs due to imbalance in the rate of influx and efflux" is the function of?

origin of universe universe and organic evolution biology

  1. Biosphere

  2. Reservoir

  3. Solar energy

  4. Species diversity

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Correct Option: A

'Biosphere' is a thin sphere that encapsulates the;

origin of universe universe and organic evolution biology

  1. Earth

  2. Universe

  3. Humans

  4. Plants and Animals

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Correct Option: A

Which of the following is the ultimate source of energy for all living organisms?

origin of universe universe and organic evolution biology

  1. Food

  2. Milk

  3. Sun

  4. Electricity

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Correct Option: C
Explanation:

Sun is the ultimate source of energy. The radiation of sun helps to warm the earth. Changing the temperature of earth forms different season. Plants directly depend on the sun to prepare their own by photosynthesis. Sun provides energy in different form solar energy. Thus, the correct option is C.

The sphere of living matter found on the surface of earth comprises.

origin of universe universe and organic evolution biology

  1. Lithosphere

  2. Hydrosphere

  3. Atmosphere

  4. Biosphere

Show answer
Correct Option: D
Explanation:

The biosphere is one of the four layers that surround the earth along with the lithosphere, hydrosphere, and atmosphere. It is the place on earth's surface where life is found. Thus the correct answer is option D.