Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

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

______ is the most dangerous soil contaminant.

  1. Organic waste

  2. Radioactive waste

  3. Chemical fertilizer

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

Multiple choice origin of universe universe and organic evolution biology

Edaphic factors are included in

  1. Abiotic components

  2. Biotic components

  3. producers

  4. consumers
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

Multiple choice origin of universe universe and organic evolution biology

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

  1. On lithosphere

  2. In the hydrosphere

  3. In the lithosphere and hydrosphere

  4. In the lithosphere, hydrosphere and atmosphere
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The biosphere is the global ecosystem composed of living organisms (biota) and the non-living (abiotic) factors from which they derive energy and nutrients, spanning the lithosphere, hydrosphere, and atmosphere.

Multiple choice origin of universe universe and organic evolution biology

What is function of biosphere?

  1. Competes for resources

  2. Cause destruction

  3. to sustain life

  4. Living and non living organism
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The primary function of the biosphere is to provide the necessary conditions and resources to sustain life on Earth.

Multiple choice origin of universe universe and organic evolution biology

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

  1. NItrogen

  2. Phosphorous

  3. Magnesium

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.
Multiple choice origin of universe universe and organic evolution biology

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

  1. Biosphere

  2. Reservoir

  3. Solar energy

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

A reservoir in ecological terms acts as a storage component that buffers against imbalances in nutrient or energy cycles. It helps maintain stability when the rate of influx and efflux of materials fluctuates.

Multiple choice origin of universe universe and organic evolution biology

'Biosphere' is a thin sphere that encapsulates the;

  1. Earth

  2. Universe

  3. Humans

  4. Plants and Animals
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The biosphere is the global ecosystem composed of living organisms (biota) and the nonliving (abiotic) factors from which they derive energy and nutrients. It is the thin layer of life surrounding the Earth.

Multiple choice origin of universe universe and organic evolution biology

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

  1. Food

  2. Milk

  3. Sun

  4. Electricity
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

Multiple choice origin of universe universe and organic evolution biology

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

  1. Lithosphere

  2. Hydrosphere

  3. Atmosphere

  4. Biosphere
Reveal answer Fill a bubble to check yourself
D Correct answer
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.