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Introduction to Reproduction - Practice Questions & MCQ
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
Concepts Covered - 0
Introduction to Reproduction and Lifespan
- Each and every organism can live only for a certain period of time.
- The period from birth to the natural death of an organism represents its life span.
- Whatever be the life span, death of every individual organism is a certainty, i.e., no individual is immortal, except single-celled organisms.
- The life spans of organisms are not necessarily correlated with their sizes; the size of crows and parrots are not very different yet their life spans show a wide difference.
- Similarly, a mango tree has a much shorter life span as compared to a peepal tree.
- The life cycle of an organism usually includes four stages:
- Juvenility
- Maturity
- Ageing
- Death
- Reproduction is defined as a biological process in which an organism gives rise to young ones (offspring) similar to itself.
- The offspring grow, mature and in turn produce new offspring.
- Thus, there is a cycle of birth, growth and death.
- Reproduction enables the continuity of the species, generation after generation.
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