Question

The supportive skeletal structures in the human external ears and in the nose tip are examples of
A. Ligaments
B. Areolar tissue
C. Bone
D. Cartilage

Answer 1

Hint: The human external ears and nose tip are not bony structures.
These are somewhat little flexible unlike bones and provide an evolutionary significance.

 Complete answer: The type of connective tissue which is smooth, flexible yet firm is the cartilage. It forms rubber-like padding to cover and protect long bones at the joints and terminals. It forms the supportive skeletal structures in the human external ears and also at the nose tip. Moreover, cartilage is also found in the elbows, ankles, knees, between vertebrae, etc.
Cartilage is of two types viz. hyaline cartilage and elastic cartilage.
The skeletal system consists of all of the bones and joints in the body.
Each bone is a complex living organ that is formed of many cells, protein fibers, and minerals. The skeleton acts as a scaffold by giving support and protection for the soft tissues that form the rest of the body.

So, the correct option is D. Cartilage

Note: Ligaments- These are fibrous connective tissue and connect a bone to another bone.
Areolar tissue- These are loose connective tissue irregularly arranged, surrounding muscles, blood vessels, nerve bundles, etc.
Bone- These are rigid, strong tissues that build the skeletal system of most Vertebrates.