NEET BIOLOGY

Detailed explanation-1: -Animalia. Animals are multicellular, and move with the aid of cilia, flagella, or muscular organs based on contractile proteins. They have organelles including a nucleus, but no chloroplasts or cell walls.

Detailed explanation-2: -Animal cells do not have cell wallsbecause they do not need them. Cell walls, which are found in plant cells, maintain cell shape, almost as if eachcell has its own exoskeleton. This rigidity allows plants to stand upright without the need for bones .

Detailed explanation-3: -Unlike the cells of the two other eukaryotic kingdoms, plants and fungi, animal cells don’t have a cell wall. This feature was lost in the distant past by the single-celled organisms that gave rise to the kingdom Animalia. The lack of a rigid cell wall allowed animals to develop a greater diversity of cell types.

Detailed explanation-4: -Chloroplasts are found only in plants and photosynthetic algae. (Humans and other animals do not have chloroplasts.) The chloroplast’s job is to carry out a process called photosynthesis. In photosynthesis, light energy is collected and used to build sugars from carbon dioxide.

Detailed explanation-5: -From the above five groups only kingdom monera have the organisms which do not have the cell walls and the smallest cell. Kingdom monera is further divided into bacteria, actinomycetes, mycoplasma, cyanobacteria, and archaebacteria.