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I have two questions to ask

1)Differentiate between bone and cartilage on the basis of:

Location,structure and function

2)what will happen if the epidermis is covered with a layer of Vaseline.


Solution

2) The chemical composition of Vaseline contains the residue and compounds of petrol and its product which is very harmful for the plants and these composition can dry up a plant if applied on their leaves.

If you cover the leaves of healthy plant with vaseline, it will block its stomata and therefore it will not remain healthy for a long time. This is because plant will not get oxygen for respiration. it will not get carbon dioxide for photosynthesis.

The plant will not lose water through transpiration so the upward movement of the water in the plant will stop.

1)
 

Bone

Cartilage

Description

A bone is a rigid organ that forms part of the vertebral skeleton.

Cartilage is a flexible connective tissue that stops the bone from rubbing against each other.

Types

Bones are of two types: compact or spongy. They are also classified into long, short, flat, irregular, sesamoid and sutural bones.

Hyaline cartilage, fibrocartilage and elastic cartilage.

Function

Protect the body against mechanical damage, assist in the movement of the body, provide a framework and shape for the body, store minerals, and produce red blood and white blood cells.

Reducing friction at joints, supporting the respiratory tract, acting as shock absorbers between weight-bearing bones, and maintaining the shape and flexibility of fleshy appendages.

Structure

Bones are made up mostly of osteoblasts (progenitor cells), osteocytes (mature bone cells), and osteoclasts (large cells that breakdown bone tissue for growth and repair).

Cartilages comprise chondroblasts, (precursor cells), chondrocytes, and a dense matrix of collagen and elastic fibers, in which the mature chondrocytes are embedded.

Location

Bones make up the majority of the axial and appendicular skeleton.

Cartilage is a much softer, more pliable component that is mostly found in between the joints of the bones, the rib cage, the ear, the nose, the bronchial tubes and the intervertebral discs.

 

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