Tag: energy flow in food chain

Questions Related to energy flow in food chain

Photosynthetically active radiation (PAR) represents the following range of wave length

  1. 400-700 nm

  2. 500-600 nm

  3. 450-950 nm

  4. 340-450 nm


Correct Option: A
Explanation:

Photosynthetically Active Radiation (PAR) is the amount of light available for photosynthesis, which is light in the 400 to 700 nanometer wavelength range. PAR changes seasonally and varies depending on the latitude and time of day.

Phenomenon, by which some primarily bacteria utilize chemicals to generate energy rich compounds, known as

  1. Autosynthesis

  2. Polysynthesis

  3. Photosynthesis

  4. Chemosynthesis


Correct Option: D

How many types of energy source an ecosystem depends on?

  1. 3 types

  2. 4 types

  3. 2 types

  4. 5 types


Correct Option: C

Organism in estuary can concentrate on conversion of sun energy into;

  1. Food

  2. Organic matters

  3. Nutrients

  4. Water


Correct Option: B

According to first law, energy cannot be created nor destroyed, but, can only show a state known as

  1. Utilized

  2. Thermodynamics

  3. Convection

  4. Conversion


Correct Option: D

Which among the following missions of Government of India follow Perform, Achieve and trade mechanism?

  1. National Solar Mission

  2. National Mission on Enhanced Energy Efficiency

  3. National Mission on Sustainable Habitat

  4. National Water Mission


Correct Option: B

Which bacteria consumes organic matter as their food, and thus oxidizing it to stable end product?

  1. Viruses

  2. Aerobic Bacteria

  3. Anaerobic Bacteria

  4. Rotifers


Correct Option: B

The capacity to do work is termed as

  1. Power

  2. Force

  3. Strength

  4. Energy


Correct Option: D

The energy used for all plant life processes is derived from ______________ radiation.

  1. ultra violet

  2. infra red

  3. beta

  4. solar


Correct Option: D

What is the PAR range?

  1. 200nm - 800nm

  2. 400nm - 700nm

  3. 350nm - 550nm

  4. 600nm - 100nm


Correct Option: B
Explanation:

Photosynthetically active radiation or PAR is, the spectral range (wave band) of solar radiation from 400 to 700 nanometers. At this range, an autotroph synthesises the food by the process of photosynthesis. Hence option B is correct.