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Secondary Sexual Characters Video Lecture - Class 8

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FAQs on Secondary Sexual Characters Video Lecture - Class 8

1. What do you mean by secondary sexual characters?
Secondary sexual characters refer to the physical traits or characteristics that distinguish males from females of a species, apart from their reproductive organs. These traits are developed during puberty and are related to sexual maturity and reproduction.
2. What are some examples of secondary sexual characters in humans?
In humans, some examples of secondary sexual characters in males include the development of facial hair, deepening of the voice, and increased muscle mass. In females, examples may include the development of breasts, widening of hips, and the growth of pubic hair.
3. What is the purpose of secondary sexual characters?
The primary purpose of secondary sexual characters is to attract mates and facilitate successful reproduction. These traits signal sexual maturity and reproductive fitness to potential partners and play a role in the selection process during mating.
4. How are secondary sexual characters different from primary sexual characters?
Primary sexual characters are the reproductive organs present in males and females, such as the testes and ovaries. Secondary sexual characters, on the other hand, are physical traits that develop during puberty and are not directly involved in reproduction but play a role in mate attraction and selection.
5. Are secondary sexual characters present in all animal species?
Yes, secondary sexual characters are present in many animal species. These traits can vary greatly between species and may include features such as elaborate plumage in birds, antlers in male deer, or bright coloration in fish. However, not all species exhibit noticeable secondary sexual characters, as it depends on their reproductive strategies and evolutionary adaptations.
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