The nuclear structure of plant and animal cells is same but the nucleus of bacterial cell is different. It is not well organised. It and does not have nuclear membrane and nucleolus. The genetic material is present in special region. Therefore, bacteria is called prokaryotes while plants and animals are eukaryotes.

Given figure in question, represents a plant cell. The various parts of plant cells are labelled as follows:

It is said that the nucleus controls all the metabolic activities as well as formation of various cell organelles. Thus, if the nucleus is removed, it will adversely affect the organism. In organism such as Amoeba, removal of nucleus may even lead to death.

(a) The above diagram represents an animal cell because cell is bounded by cell membrane and cell wall is absent.
(b) The above diagram represents a eukaryotic cell as it has a well-organised nucleus and other cell organelles in it.

Difference between plasma membrane and cell wall are:

(a) Cytoplasm It is a jelly-like substance, present between the cell membrane and the nucleus. It encloses tiny structures called cell organelles that perform different functions. It also contains water, sugar, proteins, minerals, etc.
(b) Nucleus of a cell It is a spherical component of cell commonly located in the centre of cell. It is covered by porous nuclear membrane and contains genetic material like RNA and DNA. It also contains thread-like structures called chromosomes which carry genes. Nucleus controls various activities of the cell and play role in inheritance.

Pseudopodia (pseudo-false; podia-feet) are finger-like projections of varying length protruding out of the body of Amoeba. These can appear or disappear as Amoeba moves or feeds. It helps in movement and in capturing food.

Cell wall is an additional layer surrounding the plasma membrane that protects cells against variations in temperature, moisture and high wind speed. It also provides shape and rigidity to cells.

Chloroplasts are found only in plant cells because plants synthesise their own food in the leaves. Chloroplast contains green pigment called chlorophyll which is essential for making food by the process called photosynthesis and also imparts green colour to the leaves.

Eukaryotes are organisms which contain well organised nucleus with nuclear membrane, e.g. humans.
Prokaryotes are those organisms which contain the primitive nucleus (unorganised) without nuclear membrane, e.g. bacteria, blue-green algae.

(a) Chromoplasts are the coloured plastids (except green) that give fruit and flower their colour.
(b) Chloroplasts are known as 'kitchen of the cell
(c) No, all plastids are not coloured. Leucoplasts are the colourless plastids.
(d) No, we will not see plastids in an animal cell as it is devoid of plastids.
(e) Rohit is inquisitive, attentive and has love and care towards nature

Ans. A - Nucleus B - Chromosomes
C - Genes D - Cytoplasm
E - Mitochondria F - Cell membrane
Gene is a unit of inheritance in living organisms. It controls the transfer of hereditary characteristic from parents to offspring. This means that your parents pass some of their characteristics on to you. If your father has brown eyes, you may also have brown eyes.