Answer:
1. Prophase
2. C
3. A and F
4. CENTROSOME/centrioles
5. D
6. D-A-F-C-E-B
7. Animal cells
8. Interphase
9. Mitosis is necessary for growth and development of an organism
Explanation:
1. Cells A and F in the diagram depicts the early and late phase of Prophase respectively. The phase in cell A called early Prophase is characterized by the condensation of Chromatins to form visible chromosomes while the late Prophase also called prometaphase in cell F is characterized by the organization of the chromosomes by the spindle microtubules produced by the centrioles (structure X)
2. Cell C is in the Metaphase stage because the chromosomes are aligned at the equator of the cell called METAPHASE PLATE.
3. Cell A and F is the first phase of this MITOTIC process called Prophase because it is the phase where the chromosomes becomes visible as a result of the condensation of Chromatin material. In cell F as well, the chromosomes can be seen as an X-SHAPED structure after being organized.
4. The structure labelled X is the Centriole which is produced by the CENTROSOME. The centriole is responsible for the production of the spindle microtubules that aligns the chromosomes and eventually separate sister chromatids.
5. Cell D is the in-between phase of mitosis called INTERPHASE because it is the phase that occurs between two successive mitotic divisions. It is characterized by invisible strands called Chromatin and also the nuclear membrane that is still intact.
6. D-A-F-C-E-B is correct order of the cell cycle process. Cell D is at the Interphase stage, cell A is at the early prophase stage, cell F is at the late prophase stage, cell C is at the metaphase stage, cell E is at the anaphase stage, cell B is at the Telophase/CYTOKINESIS stage.
7. The cell involved in this cycle is depicted an animal cell because 1.) There is possession of centrioles at the prophase stage. Plant cells do not have centrioles. 2. ) A cleavage furrow is formed as a result of the contraction of the contractile ring seen at the middle of the cell. The cleavage furrow is what divides an animal cell into two during CYTOKINESIS. Plant cells do not form cleavage furrow, instead they form a cell plate because of their cell wall.
8. Interphase is the longest phase of the cell cycle because it is the phase the cell prepares itself for the next round of division. The preparation includes enlargement, DNA replication, replication of organnelles etc.
9. Mitosis is very important because it is the means by which all cells increase and multiply which utterly leads to the growth and development of an organism.
