Horns of most mammals are composed ofa)Bonesb)Cartilagec)Keratind)ChitinCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Rhinocerotidae: The 'horns' of rhinoceroses are made of keratin, the same substance as fingernails, and grow continuously, but do not have a bone core. Chamaeleonidae: Many chameleons, most notably the Jackson's Chameleon, possess horns on their skulls, and have a keratin covering.

Answer

Horns are made of a substance called keratin which is also present in our body.HOPE help u.

Answer

Horns of most mammals are composed of Keratin.

What are horns?
Horns are hard, permanent, and often pointed structures that grow from the heads of certain animals. They are typically found in mammals, particularly in ungulates (hoofed mammals) such as cattle, sheep, antelopes, and goats.

Composition of horns:
Horns are composed primarily of keratin, a tough and fibrous protein. Keratin is the same substance that makes up human hair and nails. It is a structural protein that provides strength and rigidity to various body parts.

Function of horns:
Horns serve various purposes depending on the species. They are mainly used for defense, territorial battles, and attracting mates. Some horned animals also use their horns for digging, grooming, or feeding.

Comparison with antlers:
It is important to note that horns are different from antlers. While horns are permanent and continue to grow throughout an animal's life, antlers are temporary structures that are shed and regrown each year. Antlers are composed of bone and are covered in a layer of velvet during their growth phase.

Horn structure:
Horns typically have a bony core surrounded by a keratinized sheath. The bony core is an extension of the skull and is covered by a layer of living skin called the dermis. The dermis contains blood vessels and nerve endings that nourish the horn and provide sensitivity.

Keratin sheath:
The keratin sheath is the visible part of the horn and is composed of tightly packed keratin fibers. It is responsible for the hardness and durability of the horn. The sheath is continuously worn down and regrows from the base throughout the animal's life.

Conclusion:
In conclusion, the horns of most mammals are composed of keratin, a tough and fibrous protein. This composition provides the horns with strength, rigidity, and the ability to withstand the demands of their various functions in different species.

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