LIFE SCIENCE

Detailed explanation-1: -Microtubules guide the formation of the plant cell wall. Cellulose is laid down by enzymes to form the primary cell wall. Some plants also have a secondary cell wall.

Detailed explanation-2: -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-3: -The cell wall provides strength and support to the plant, much like the exoskeleton of an insect or spider. Our skeletons are inside our bodies, rather than on the outside like insects or spiders. The plant cell wall is mainly made up of the carbohydrates molecules cellulose and lignin.

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.