Energy Flow
Trending Questions
Q. ![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1360914/original_original_04.png)
The amount of energy assimilated by plants and carnivores as food is respectively.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1360914/original_original_04.png)
The amount of energy assimilated by plants and carnivores as food is respectively.
- 500 J and 5 J
- 5 J and 0.05 J
- 5000 J and 50 J
- 50 J and 0.5 J
Q.
Give an example of aquatic ecosystem.
Q.
The amount of energy ________ from higher trophic to lower trophic levels.
Increases
Decreases
Remains the same
Cannot be predicted
Q.
what are the diffrences between autotrophic nutrition and heterotrophic nutrition?
Q. The flow of energy in an ecosystem is
- Bidirectional
- Multidirectional
- Unidirectional
- Low to high
Q.
An example of the aquatic ecosystem is a pond.
False
True
Q.
Define food chain
Q. Maximum physiological ability to produce offspring is
(a) birth rate
(b) carrying capacity
(c) biotic potential
(d) population growth
(a) birth rate
(b) carrying capacity
(c) biotic potential
(d) population growth
Q. ![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1354022/original_22.png)
The amount of energy available to plants for photosynthesis is
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1354022/original_22.png)
The amount of energy available to plants for photosynthesis is
- 100 J
- 10 J
- 1 J
- 1 kJ
Q.
Question 8
In an ecosystem, the 10% of the energy available to the next trophic level is in the form of
(a) heat energy
(b) light energy
(c) chemical energy
(d) mechanical energy
Q.
If 45 kJ of energy is stored by the green plants in the above food web, then what will be the difference between the gained energy by the tiger if it preys on wolf and fox respectively?
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1354095/original_29.png)
- 450 J
- 45 J
- 405 J
- 504 J
Q. Today, which renewable energy source provides India with the most energy?
- Wind
- Solar
- Geothermal
- Hydropower
Q.
How is the 'flow of energy' different from the 'flow of nutrients' in an ecosystem?
Q. Regarding the given assertion and reason, choose te right option.
Assertion [A]: Decomposers may be excluded from the food chains.
Reason [R]: They act at all trophic levels of food chains.
Assertion [A]: Decomposers may be excluded from the food chains.
Reason [R]: They act at all trophic levels of food chains.
- A is true and R is false
- Both the A and R are true and R explains A
- Both A and R are true and R does not explain A
- Both A and R are false
Q. Which one of the following statements for pyramid of energy is incorrect ?
- It is inverted in shape
- It is upright in shape
- It shows energy content of different trophic level of organisms
- Its base is broad
Q.
The pyramid of biomass is inverted for
Q. In an ecosystem the rate of formation of organic matter during photosynthesis is termed as :
- Net productivity
- Net primary productivity
- Gross primary productivity
- Secondary productivity
Q.
Give reasons why:
- The forest ecosystem is more stable than a cropland ecosystem.
- Available energy goes on decreasing at each trophic level in a food chain.