Correct Option
The correct option is (c) 1 and 3 only.
Explanation
Bone is a specialized connective tissue that constitutes the primary structural framework of the vertebrate body. It is characterized by a hard, mineralized matrix distinct from other connective tissues like cartilage or blood.
Statement-wise Analysis:
- Statement 1 is Correct: Bone forms the rigid internal framework that supports the body, protects vital organs, and serves as an anchor for muscles to facilitate movement.
- Statement 2 is Incorrect: Bone is a strong and non-flexible tissue. Flexibility is a characteristic of cartilage (another type of connective tissue found in joints, ear pinna, etc.), which has a pliable matrix.
- Statement 3 is Correct: Bone cells, known as osteocytes, are embedded in a hard, non-pliable matrix that is heavily composed of calcium and phosphorus compounds. This mineral composition provides the tissue with its characteristic hardness and compressive strength.
Key Takeaway:
Bone is a hard, non-pliable connective tissue with a matrix rich in calcium and phosphorus salts, distinguishing it from pliable tissues like cartilage. Its primary functions are structural support, protection, and locomotion.