In adult vertebrates, where is cartilage found?Multiple choice question.At joint surfacesInside bonesIn the bloodBeneath the skin

Step 1: Break Down the Problem

We need to determine the locations where cartilage is found in adult vertebrates from the given multiple choice options.

Step 2: Relevant Concepts

Cartilage is a flexible connective tissue found in various parts of the body, including joints, the rib cage, ear, nose, and intervertebral discs among others. The options provided relate to general locations in the vertebrate body.

Step 3: Analyze Each Option

1. At joint surfaces: Cartilage is commonly found at the surfaces of joints (articular cartilage), providing cushioning and support.
2. Inside bones: While cartilage is involved in the formation of bone during development, mature bones do not have cartilage inside them; instead, they are primarily made of bone tissue.
3. In the blood: Blood does not contain cartilage; it is a fluid connective tissue made of cells suspended in plasma.
4. Beneath the skin: Cartilage is generally not found beneath the skin; this area is typically composed of skin layers and connective tissues.

Step 4: Verify and Summarize

Based on the analysis, the only correct location where cartilage is typically found in adult vertebrates is at joint surfaces. Therefore, the other options are incorrect.

Final Answer

Cartilage is found at joint surfaces in adult vertebrates.