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Which group of organisms are not constit...

Which group of organisms are not constituents of a food chain ?
(i) Grass, lion, rabbit, wolf
(ii) Plankton, man, fish, grasshopper
(iii) Wolf, grass, snake, tiger
(iv) Frog, snake, eagle, grass, grasshopper

A

(i) and (iii)

B

(iii) and (iv)

C

(ii) and (iii)

D

(i) and (iv)

Text Solution

AI Generated Solution

The correct Answer is:
To determine which group of organisms are not constituents of a food chain, we need to analyze each option provided in the question. A food chain is a sequence of organisms where one organism eats another, forming a pathway of energy transfer. ### Step-by-Step Solution: 1. **Analyze Option (i): Grass, lion, rabbit, wolf** - Grass is a producer and can be eaten by the rabbit (herbivore). - The rabbit can be eaten by the wolf (carnivore). - The lion, being a top predator, can also eat the wolf. - **Conclusion**: This forms a valid food chain. 2. **Analyze Option (ii): Plankton, man, fish, grasshopper** - Plankton are aquatic organisms, while grasshoppers are terrestrial. - Grasshoppers do not eat plankton; they primarily feed on plants (like grass). - This disrupts the food chain since there is no direct feeding relationship between grasshopper and plankton. - **Conclusion**: This does not form a valid food chain. 3. **Analyze Option (iii): Wolf, grass, snake, tiger** - All organisms listed (wolf, snake, tiger) are carnivores and do not feed on grass. - There is no herbivore present to consume the grass, which is essential for a food chain. - **Conclusion**: This does not form a valid food chain. 4. **Analyze Option (iv): Frog, snake, eagle, grass, grasshopper** - Grass can be eaten by the grasshopper. - The grasshopper can be eaten by the frog. - The frog can be eaten by the snake. - The snake can be eaten by the eagle. - **Conclusion**: This forms a valid food chain. ### Final Conclusion: The groups of organisms that are **not** constituents of a food chain are found in options (ii) and (iii). Therefore, the correct answer is: **Answer: (ii) Plankton, man, fish, grasshopper and (iii) Wolf, grass, snake, tiger.** ---
To determine which group of organisms are not constituents of a food chain, we need to analyze each option provided in the question. A food chain is a sequence of organisms where one organism eats another, forming a pathway of energy transfer. ### Step-by-Step Solution: 1. **Analyze Option (i): Grass, lion, rabbit, wolf** - Grass is a producer and can be eaten by the rabbit (herbivore). - The rabbit can be eaten by the wolf (carnivore). - The lion, being a top predator, can also eat the wolf. ...
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