NEET 2023
- Exam
- NEET
- Year
- 2023
- Subject
- Botany
- Chapter
- Environmental Issues
NEET 2023 · Botany · Environmental Issues
Which of the following statements is correct?
Which of the following statements is correct?
Options
- AAlgal Bloom decreases fish mortality.
- BEutrophication refers to increase in domestic sewage and waste water in lakes.
- CBiomagnification refers to increase in concentration of toxicant at successive trophic levels.
- DPresence of large amount of nutrients in water restricts 'Algal Bloom'.
Correct answer
C. Biomagnification refers to increase in concentration of toxicant at successive trophic levels.
Step-by-step solution
The presence of a large amount of organic and inorganic materials such as fertilisers in water causes excessive growth of planktonic (free-floating) algae, which is called algal bloom. It causes deterioration of the water quality and fish mortality.
Eutrophication is the process in which a water body becomes overly enriched with nutrients, leading to the plentiful growth of simple plant life.
Biomagnification is defined as the increase in the concentration of a substance that is toxic to the individual like a pesticide at the successive trophic levels in a food chain. Hence, option C is correct.