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Sharks are killers of the deep seas. Which of the following is a characteristic of sharks?
- a)They are bony.
- b)They are cartilaginous.
- c)They are mostly warm-blooded.
- d)Gill slits are covered.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Sharks are killers of the deep seas. Which of the following is a chara...
Introduction to Shark Characteristics
Sharks are fascinating creatures of the ocean and are known for their unique biological features. Among the options provided, the correct characteristic of sharks is that they are cartilaginous.
What Does Cartilaginous Mean?
- Sharks belong to a group called Chondrichthyes, which means they have skeletons made of cartilage instead of bone.
- Cartilage is a flexible tissue that is lighter and more resilient than bone, allowing sharks to be more agile swimmers.
Key Characteristics of Sharks
- Cartilaginous Skeleton: Unlike bony fish, sharks have a skeleton made entirely of cartilage, which contributes to their buoyancy and flexibility.
- Gill Slits: Sharks possess multiple gill slits (usually five to seven) on the sides of their heads for efficient breathing, which are not covered by a bony operculum like in bony fish.
- Warm-Blooded: Most sharks are not warm-blooded; they are ectothermic (cold-blooded), though some species can regulate their body temperature to a degree.
- Not Bony: Sharks do not have bones, which distinguishes them from most fish species. This cartilaginous structure is a key factor in their evolutionary success.
Conclusion
Understanding that sharks are cartilaginous helps highlight their unique adaptations for life in the ocean. Their skeletal structure, along with their specialized gill systems, makes them efficient predators in their deep-sea habitat.
Sharks are fascinating creatures of the ocean and are known for their unique biological features. Among the options provided, the correct characteristic of sharks is that they are cartilaginous.
What Does Cartilaginous Mean?
- Sharks belong to a group called Chondrichthyes, which means they have skeletons made of cartilage instead of bone.
- Cartilage is a flexible tissue that is lighter and more resilient than bone, allowing sharks to be more agile swimmers.
Key Characteristics of Sharks
- Cartilaginous Skeleton: Unlike bony fish, sharks have a skeleton made entirely of cartilage, which contributes to their buoyancy and flexibility.
- Gill Slits: Sharks possess multiple gill slits (usually five to seven) on the sides of their heads for efficient breathing, which are not covered by a bony operculum like in bony fish.
- Warm-Blooded: Most sharks are not warm-blooded; they are ectothermic (cold-blooded), though some species can regulate their body temperature to a degree.
- Not Bony: Sharks do not have bones, which distinguishes them from most fish species. This cartilaginous structure is a key factor in their evolutionary success.
Conclusion
Understanding that sharks are cartilaginous helps highlight their unique adaptations for life in the ocean. Their skeletal structure, along with their specialized gill systems, makes them efficient predators in their deep-sea habitat.
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Community Answer
Sharks are killers of the deep seas. Which of the following is a chara...
Cartilaginous fish are fish that have a skeleton made of cartilage, rather than bone. Cartilaginous fish include sharks, rays, skates and chimaeras. The cartilages are tough and flexible and provides enough structural support to allow these fish to grow to very large sizes.
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