QUESTION NO 19 : Explain Phases of life cycle.
Answer for obtaining full marks :
The life cycle of organisms is characterized by three distinct phases: the juvenile phase, the reproductive phase, and the senescent phase.
1. Juvenile Phase / Vegetative Phase: This is the initial period of growth, extending from birth until the organism reaches reproductive maturity.
2. Reproductive Phase / Maturity Phase: During this phase, organisms engage in reproduction, leading to the development of offspring that eventually reach their own maturity.
Breeding animals are categorized based on their reproductive timing:
- Seasonal Breeders: These animals reproduce only during specific times of the year (e.g., frogs, lizards, most birds, deers).
- Continuous Breeders: These animals can breed throughout their period of sexual maturity (e.g., honey bees, poultry, rabbit).
3. Senescent Phase: This phase marks the end of the reproductive period, characterized by the onset of degeneration in the structure and function of the body.
Answer for Slow Learners :
The life cycle of an organism is divided into three distinct phases: juvenile, reproductive, and senescent.
- Juvenile/Vegetative Phase: This is the initial growth period leading up to the organism's readiness for reproduction.
- Reproductive/Maturity Phase: During this phase, organisms are capable of reproducing. Organisms are classified as either:
- Seasonal Breeders: Those that reproduce only during specific times of the year (e.g., frogs, lizards, birds, deer).
- Continuous Breeders: Those that can breed throughout their period of sexual maturity (e.g., honey bees, poultry, rabbits).
- Senescent Phase: This phase follows the reproductive period and is characterized by the physical deterioration of the body.
Previously Asked Questions As :
- What is the Senescent phase of life ? May-2022 (Bio Zoology)
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