Introduction to Energy Flow

Q.

The percentage of solar radiation absorbed by all the green plants for the process of photosynthesis is about:

1. 1%

2. 5%

3. 8%

4. 10%

Q. In an ecosystem, which of the following shows one way passage

1. Nitrogen
2. Carbon
3. Potassium
4. Free energy

Q.

Energy flow in an ecosystem is _____ .

1. Bidirectional

2. Multidirectional

3. Unidirectional

4. Indeterminate

Q.

Ecosystem depends upon ___ energy as its energy source.

Q.

State the second law of thermodynamics.

Q. Matter flow in an ecosystem is ___.

1. Bidirectional
2. Cyclical
3. Unidirectional
4. Random

Q. Energy flow and energy transformations in living systems strictly confirm to the:

1. Law of limiting factors
2. Liebig's law of minimum
3. Laws of thermodynamics
4. Shelford's law of tolerance

Q.

Approximately how much of the solar energy that falls on the leaves of a plant is converted to chemical energy by photosynthesis?

1. Less than 1%

2. Upto 2%

3. 30%

4. 50%

Q. In an ecosystem, energy is dissipated as _______ energy which cannot be recycled.

1. light
2. chemical
3. heat
4. mechanical