NEET Botany
Energy Flow
Low Priority
Consistency: 30%
Weightage: 6 / 20 Yrs
High-Yield Trend
1
2025 1
2016 1
2012 2
2011 1
2009 1
2008 Questions 7 MCQs
01
PYQ 2008
easy
botany ID: neet-200
Consider the following statements concerning food chains.
Which two of the above statements are correct?
| (A) | removal of 80% of tigers from an area resulted in greatly increased growth of vegetation |
| (B) | removal of most of the carnivores resulted in an increased population of deer |
| (C) | the length of food chains is generally limited to 3-4 trophic levels due to energy |
| (D) | the length of food chains may vary from 2 to 8 trophic levels |
Which two of the above statements are correct?
1. B and C
2. C and D
3. A and D
4. A and B
1
(1)
2
(2)
3
(3)
4
(4)
02
PYQ 2009
medium
botany ID: neet-200
Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?
1. Phytoplankton
2. Fish
3. Zooplankton
4. Frog
1
(1)
2
(2)
3
(3)
4
(4)
03
PYQ 2011
easy
botany ID: neet-201
Mass of living matter at a tropic level in an area at any time is called:
| 1. | Detritus | 2. | Humus |
| 3. | Standing state | 4. | Standing crop |
1
(1)
2
(2)
3
(3)
4
(4)
04
PYQ 2011
easy
botany ID: neet-201
Of the total incident solar radiation, proportion of PAR is:
1. about 60%
2. about 50%
3. more than 80%
4. about 70%
2. about 50%
3. more than 80%
4. about 70%
1
(1)
2
(2)
3
(3)
4
(4)
05
PYQ 2012
easy
botany ID: neet-201
Identify the possible link A in the following food chain.
Green plantInsectFrogAEagle
1. Rabbit
2. Wolf
3. Cobra
4. Parrot
1
(1)
2
(2)
3
(3)
4
(4)
06
PYQ 2016
easy
botany ID: neet-201
The primary producers of the deep-sea hydrothermal vent ecosystem are:
1. green algae
2. chemosynthetic bacteria
3. blue-green algae
4. coral reefs
1
(1)
2
(2)
3
(3)
4
(4)
07
PYQ 2025
easy
botany ID: neet-202
Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | In an ecosystem, there is unidirectional flow of energy of sun from producers to consumers. |
| Statement II: | Ecosystems are exempted from 2nd law of thermodynamics. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Statement I is correct but statement II is incorrect |
| 2. | Statement I is incorrect but statement II is correct |
| 3. | Both statement I and statement II are correct |
| 4. | Both statement I and statement II are incorrect |
1
(1)
2
(2)
3
(3)
4
(4)