Energy flow in food chain - class-XII
Description: energy flow in food chain | |
Number of Questions: 60 | |
Created by: Karuna Seth | |
Tags: biology ecosystem : structure and function botany ecology option c: ecology and conservation organisms and their environment ecosystem |
One way cycle is
Which colour of light is mostly absorbed by chlorophyll a?
Photosynthesis is most active in
What is the percentage of photosynthetically active radiation(PAR), in the incident solar radiation.
Of the total incident solar radiation the proportion of PAR is
What happens in biological magnification?
As energy is passed from one trophic level to another, the amount of usable energy
The total solar radiation proportion of PAR is
Sun gives radiation in the form of
Which of the following wavelength is absorbed maximum for photosynthesis?
Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of higher plants?
The most effective wavelength of visible light in photosynthesis is in the region
Flow of energy is unidirectional in an ecosystem because in each trophic level.
Of the total incident solar radiation the proportion of PAR is
The pyramid of energy is always upright for any ecosystem. This situation indicates the fact that?
The percentage of sunlight utilized for photosynthesis by higher plants is
Emerson defined red drop as decline in the quantum yield of photosynthesis at wavelength of
If plant uses $3 \%$ od I.S.R., Then percentage of P.A.R. plant is using
Which level in food chain has maximum energy?
In which layer of atmosphere gases exhibit high kinetic energy?
Photosynthetically active radiation (PAR) represents the following range of wave length
Phenomenon, by which some primarily bacteria utilize chemicals to generate energy rich compounds, known as
How many types of energy source an ecosystem depends on?
Organism in estuary can concentrate on conversion of sun energy into;
According to first law, energy cannot be created nor destroyed, but, can only show a state known as
Which among the following missions of Government of India follow Perform, Achieve and trade mechanism?
Which bacteria consumes organic matter as their food, and thus oxidizing it to stable end product?
The capacity to do work is termed as
The energy used for all plant life processes is derived from ______________ radiation.
What is the PAR range?
The wavelength of light most absorbed during photosynthesis is
Photosynthetic Active Radiation (PAR) has which of the following range of wavelengths?
Which of the following wavelength of light is abosrbed maximum for photosynthesis?
The most effective wavelength of visible light in photosynthesis is in the region of
Engelmann's experiment with Spirogyra demonstrated that
The maximum light absorbed by the chlorophyll a is at the wave length of
The percentage of light energy utilized for photosynthesis by higher plants is
Ecological efficiency is
The wavelength of light most absorbed during photosynthesis is
Leaves appear green because they
The plant Cuscuta shows maximum photosynthesis in
Amount of commercial energy being obtained from nuclear reactors in France is
State whether the following statements are true or false .
The term entropy refers to steady state.
Choose the correct answers from the alternatives given .
Which of the following statements is not a consequence of the second law of thermodynamics?
The principles which bind all living systems together are _______________.
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Which of the following best describes the second law of thermodynamics?
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According to the first law of thermodynamics
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Which of the following describes the first law of thermodynamics?
Which one of the following is the correct sequence of energy flower in an ecosystem?
Which law states that, conversion of energy from one form to another is not 100% efficient?
In solar ecosystem, an extra energy is available for system, used for production of:
Choose the correct answers from the alternatives given .
Endergonic reactions
Conversion of solar energy is governed by law of
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ATP is considered a high-energy compound because under cellular conditions, 7.3 kcal per mole of energy is released when a bond is broken between the
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A living organism represents stored energy in the form of chemical compounds When an organism dies, what happens to.that stored energy?
State whether the following statements are true or false .
An open system has access to environment for matter and energy.
Photosynthetically active radiation (PAR) represents which of the following range of wave length?
Choose the correct answers from the alternatives given .
Which of the following metabolic processes can occur without a net influx of energy from some other process ?
Main objective of production of herbicide resistant GM crops is to
State whether the following statements are true or false .
Energy is anything that occupies space and has weight.