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Which of the following is correct regarding the male and female gamete?
Male gamete is small and motile; and female gamete is larger and non-motile.
Male gamete is large and motile; and female gamete is smaller and non-motile.
Male gamete is large and non-motile; and female gamete is smaller and motile.
Male gamete is small and non-motile; and female gamete is larger and motile.
Male gamete is small and motile; and female gamete is larger and non-motile.
In oogamous reproduction, which is characteristic of most higher animals and many plants, the male gamete (sperm) is typically small and motile, specialized for finding the egg, while the female gamete (ovum) is large and non-motile, containing stored nutrients.
In oogamous reproduction, which is characteristic of most higher animals and many plants, the male gamete (sperm) is typically small and motile, specialized for finding the egg, while the female gamete (ovum) is large and non-motile, containing stored nutrients.
Think of the male gamete as a scout moving quickly to find a destination, and the female gamete as the supply base, large and stationary, waiting for the arrival of the scout.
Small-Speed (Male) vs Large-Load (Female)
n+n=2n тАФ Represents the process of fertilization where two haploid gametes fuse to form a diploid zygote.
The female gamete undergoes a process of unequal cytokinesis during oogenesis to retain maximum cytoplasm and organelles for the developing embryo. Conversely, the male gamete minimizes cytoplasm to reduce mass, facilitating motility via structures like flagella, fueled by high concentrations of mitochondria to provide ATP for movement.
Male gametes are typically equipped with a tail (flagellum) for propulsion.
Female gametes are larger due to the accumulation of yolk and nutrients required for early zygotic development.
The process of fusion between these morphologically distinct gametes is known as fertilization.
Efficient dispersal of genetic material through motile male gametes.
Enhanced survival chances for the zygote due to stored nutrients in the female egg.
Male gametes have a limited lifespan due to high energy expenditure during motility.
Production of large, nutrient-rich eggs is metabolically expensive for the female.
Sexual reproduction in mammals.
Oogamy in advanced algae like Fucus and land plants.
| Feature | Male Gamete | Female Gamete |
|---|---|---|
Size | Small | Large |
Motility | Motile | Non-motile |
The term for this phenomenon is Oogamy.
Options B, C, and D are incorrect as they contradict the biological evolutionary requirement for the female to be the stationary energy source and the male to be the search-oriented agent.
A is correct тАФ The male gamete is small and motile, while the female gamete is large and non-motile.
In Biology competitive exams, always remember that 'motility' in male gametes is a trade-off for carrying fewer resources, while 'non-motility' in female gametes is a trade-off for carrying the heavy yolk mass.
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