NEET BIOLOGY

Detailed explanation-1: -The interphase is the period when the cell is in a non-dividing state and this can be in different stages: the first gap (G1 ) between the last mitosis and the S phase (phase of DNA synthesis) and the second gap (G2) between the completion of the S phase and the next mitosis (M).

Detailed explanation-2: -In interphase they will look like ‘normal’ plant cells, with a dark and well defined nucleus . Remember that although interphase is the phase cells spend the most time in, they are not inactive. Cells will be copying their DNA in preparation for cell division (referred to as Synthesis or S) .

Detailed explanation-3: -Cells spend most of their time in a stage called interphase. During this phase, the nuclear envelope surrounds the nucleus. There may be one or more nucleoli (dark, condensed regions) visible within the nucleus. The material around the nucleoli, contained within the nuclear envelope is DNA in the form of chromatin.

Detailed explanation-4: -Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth). At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.

Detailed explanation-5: -In G1, cells accomplish most of their growth; they get bigger in size and make proteins and organelles needed for normal functions of DNA synthesis. Here, proteins and RNAs are synthesized, and, more especially the centromere and the other components of the centrosomes are made.