Select Chapter Topics:
Q. No.What percent of the incident solar radiation is photosynthetically active radiation (PAR)?
1. only about 1 to 5
2. only about 2 to 10
3. around but less than 50
4. 90 to 95
1. only about 1 to 5
2. only about 2 to 10
3. around but less than 50
4. 90 to 95
Subtopic: Components & Types of Ecosystems |
Please attempt this question first.
Please attempt this question first.
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIdentify the incorrect statement regarding primary productivity in an ecosystem?
| 1. | It occurs only through the process of photosynthesis. |
| 2. | Almost all life on Earth relies directly or indirectly on primary production. |
| 3. | Net primary production is available for consumption by herbivores. |
| 4. | Gross primary productivity minus the respiratory loss is the net primary productivity. |
Subtopic: Ecosystem Productivity |
Please attempt this question first.
Please attempt this question first.
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe net primary productivity of oceans is about:
| 1. | 25 % of the annual net primary productivity of the whole biosphere |
| 2. | 33 % of the annual net primary productivity of the whole biosphere |
| 3. | 66 % of the annual net primary productivity of the whole biosphere |
| 4. | 70 % of the annual net primary productivity of the whole biosphere |
Subtopic: Ecosystem Productivity |
Please attempt this question first.
Please attempt this question first.
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMark the incorrect match
| 1. | Primary productivity - Varies in different types of ecosystems |
| 2. | GPP - Available biomass for the consumption to herbivores |
| 3. | 55 billion tons - Annual NPP of oceans |
| 4. | Secondary productivity - Rate of formation of new organic matter by consumers |
Subtopic: Ecosystem Productivity |
Please attempt this question first.
Please attempt this question first.
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following ecosystems are expected to have the least productivity?
1. Tundras
2. Tropical rain forests
3. Open oceans
4. Swamps and marshes
1. Tundras
2. Tropical rain forests
3. Open oceans
4. Swamps and marshes
From NCERT
Subtopic: Ecosystem Productivity |
Please attempt this question first.
Please attempt this question first.
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat is the difference between Gross Primary Productivity (GPP) and Net Primary Productivity (NPP)?
| 1. | GPP is the total rate of photosynthesis, including both organic matter used in respiration and biomass accumulation; NPP is only the biomass accumulation. |
| 2. | GPP refers to the energy stored by consumers, while NPP refers to the energy stored by producers. |
| 3. | GPP is the total biomass accumulated, while NPP is the leftover energy after plants' metabolic needs are met. |
| 4. | NPP is always higher than GPP because it includes consumer productivity. |
From NCERT
Subtopic: Ecosystem Productivity |
Please attempt this question first.
Please attempt this question first.
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyRead the following two statements and choose the correct option:
Options:
| Statement I: | The annual net primary productivity of the entire biosphere is approximately 170 billion tons of wet fresh weight organic matter. |
| Statement II: | Oceans contribute the majority of the net primary productivity of the biosphere. |
Options:
| 1. | Both statements I and II are correct |
| 2. | Both statements I and II are incorrect |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Ecosystem Productivity |
Please attempt this question first.
Please attempt this question first.
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis is:
| 1. | Primary production | 2. | Primary productivity |
| 3. | Secondary production | 4. | Secondary productivity |
From NCERT
Subtopic: Ecosystem Productivity |
Please attempt this question first.
Please attempt this question first.
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis is called:
1. Secondary production
2. Primary production
3. Gross primary production
4. Net primary production
1. Secondary production
2. Primary production
3. Gross primary production
4. Net primary production
Subtopic: Ecosystem Productivity |
To view explanation, please take trial in the course below.
NEET 2026 - Target Batch - Vital
To view explanation, please take trial in the course below.
NEET 2026 - Target Batch - Vital
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDuring the decomposition of detritus, the correct chronological sequence of steps involved is:
| 1. | Fragmentation → Leaching → Catabolism |
| 2. | Catabolism → Leaching → Fragmentation |
| 3. | Leaching → Fragmentation → Catabolism |
| 4. | There is no sequence as all steps occur simultaneously |
From NCERT
Subtopic: Decomposition |
Please attempt this question first.
Please attempt this question first.
Please attempt this question first.
Launched MCQ Practice Books
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Chapter Topics:
© 2025 GoodEd Technologies Pvt. Ltd.