MHT CET · BIOLOGY · STD 12 - 5. Origin and Evolution of Life

An elephant produces six young ones in its life span of 100 years. If this continues, then, in 750 years, 19 million elephants will be produced. It is NOT possible in reality mainly due to ___________ .

A prodigality
B mutation
C competition
D mutualism

Verified Solution

Answer & Solution

Correct Answer

(A) prodigality

Step-by-step Solution

Detailed explanation

Prodigality refers to wastefulness or excessive production. In the given scenario, if an elephant produces six young ones in its lifespan of 100 years, it would imply an extremely high reproduction rate. This rate is not sustainable in reality due to limited resources, environmental constraints, and. competition for resources among individuals. The prodigality of reproduction would result in overpopulation and strain on the ecosystem, making it unrealistic for 19 million elephants to be produced in 750 years.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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	Column I		Column II
A.	Newts and tadpoles	I.	Plasma membrane
B.	Platyhelminthes	II.	External gills
C.	Reptiles	III.	Body surface
D.	Protists	IV.	Lungs