Tag: biology

Questions Related to biology

In Mucor conjugation produces

biology kingdom monera, protista and fungi mycorrhiza classification of fungi useful and harmful microbes

  1. Zoospore

  2. Zygospore

  3. Akinete

  4. Arthrospore.

Show answer
Correct Option: B
Explanation:

Sexual reproduction takes place during the unfavourable condition by means of gametangial copulation. The gametangia look alike and by conjugation, they give rise to zygospore.

So the correct option is B.

The ultimate environmental hazard to mankind is 

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Air pollution

  2. Water pollution

  3. Noise pollution

  4. Nuclear pollution

Show answer
Correct Option: D
Explanation:

In modern times the biggest environmental threat to mankind is nuclear pollution as the effects of radiation pollution cannot be repaired or reversed. 

Other forms of pollution can be controlled and ill effects reversed but radiations affect coming generations through genetic mutations. Harmful effects of radioactive pollution were first recorded in 1909 in uranium miners as skin burns, cancers and mutations. Many plants are killed even at low level of radioactivity. Young and recently divided cells are more easily damaged. Delayed effects of radioactive pollution include tumors, cancers, mutations, genetic deformities, and shorter life span. These effects are clearly visible only in subsequent generations.

Who was the Indian scientist who was primarily responsible for setting of nuclear reactors in India?

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. H. J. Bhabha

  2. V. A. Sarabhai

  3. Dr. A. P. J. Abdul Kalam

  4. G. Madhavan Nair

Show answer
Correct Option: A
Explanation:

Dr. Homi Jhehangir Bhabha was the first Indian scientist who initiated to set nuclear reactors in India. He is also known as the ''Father of Nuclear Science".

Nuclear accidents mostly release radioactive ______________ into the atmosphere

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Carbon

  2. Iodine

  3. Phosphorus

  4. Sulphur

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Correct Option: B

Which of the following were released during accidental leakage in Chernobyl, the three-mile island?

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Low-level radiations

  2. Intermediate level radiation

  3. High level radiation

  4. No radiations were released

Show answer
Correct Option: C
Explanation:

Accidental leakage in Chernobyl nuclear power plant occur in April 26, 1986. Due to this high level radiation is get leaked out which cause long term health impact eg cancer and body deformation.

So, the correct option is 'High level radiation'.

Which of the following waste is present in coolant water from atomic reactors?

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Solid municipal waste

  2. Low-level radioactive waste

  3. High-level radioactive waste

  4. None of the above

Show answer
Correct Option: B
Explanation:

A nuclear reactor coolant is used to remove heat from the nuclear reactor core and transfer it to electrical generator which produce electricity. All the nuclear power plant use water as a coolant under high pressure. water is non radioactive material so there is low level of radioactive waste in coolant. 

So, the correct option is 'Low-level radioactive wastes'.

Which of the following reasons make nuclear waste an extremely potent pollutant?

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. It causes mutations at a very high rate

  2. It is responsible for heating of Earths surface and atmosphere

  3. It is a very challenging task to provide safe disposal of radioactive wastes

  4. All of the above

Show answer
Correct Option: A,C
Explanation:

Nuclear waste is a very big problem in nuclear power plant due to the emission of harmful radiation which causes mutation in living organisms. Another problem facing in nuclear waste is the disposal of it because disposal is done in very deep in the oceans and there is the risk of leakage of radiation which is harmful to aquatic life also.

so correct options are 'it causes mutations at a very high rate ad it is a very chanllenging task to provide safe disposal of radioactive wastes'.

___________ was developed after World War II.

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Wind energy

  2. Solar energy

  3. Nuclear power

  4. Thermal power

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Correct Option: C

The first nuclear explosion was conducted by U.S.A in

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. July 1945

  2. August 1945

  3. September 1944

  4. June 1944

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Correct Option: B

Problem associated with nuclear power plants is

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Emmission of hazardous waste

  2. Disposal of radioactive waste

  3. Thermal pollution

  4. All of the above

Show answer
Correct Option: D
Explanation:

A nuclear power plant is a thermal power station in which the heat source is a nuclear reactor. The heat is used to generate steam that drives a steam turbine connected to a generator that produces electricity.  The high temperature produced during a nuclear reaction causes thermal pollution thereby affecting the life forms. Radiations are continuously released by radioactive waste produced by these power plants that affect mankind for generations making it hazardous. Thus the correct answer is option D.