GENERAL HISTOLOGY

Detailed explanation-1: -Plant cell walls are primarily made of cellulose, which is the most abundant macromolecule on Earth. Cellulose fibers are long, linear polymers of hundreds of glucose molecules.

Detailed explanation-2: -Typical components of the cell wall include cellulose, non-cellulosic, and pectic polysaccharides, proteins, phenolic compounds, and water.

Detailed explanation-3: -In plant cell walls, there are various building blocks, such as cellulose, hemicellulose, and callose. For the concrete, the cells are thought to use a substance called pectin. All three building blocks and the concrete are made of different types of sugars. Cellulose is the major reinforcement for the cell wall.

Detailed explanation-4: -Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out . All cells have cell membranes, and the membranes are flexible. So animal cells can have various shapes, but plant cells only have the shapes of their cell walls.

Detailed explanation-5: -The organelles found only in plant cells include chloroplast, cell wall and a vacuole. The chloroplasts contain a green pigment chlorophyll that is responsible for the process of photosynthesis.