Question 4 :
Which of the following statements about cell structure is NOT correct?

Question 7 :
In which phase of mitosis, the chromosomes are arranged around the equator of the spindle?

Question 9 :
Cell division can not be stopped in which phase of the cell cycle?

Question 11 :
In which stage of the first meiotic division two sister chromatids are formed?

Question 12 :
At which phase of meiosis, the two cells, each withseparated sister chromatids move towards opposite poles?

Question 17 :
Assertion: Mitochondria is known as powerhouse of cell. Reason: Synthesis of ATP occurs in Mitochondria which is stored as chemical energy in the cell.

Question 19 :
If during the initiation of meiosis there is 16 pg of DNA in a gametocyte. Then the amount of DNA present in the gamete will be

Question 20 :
Which of the following not occurs in anaphase I but occurs in anaphase II?

Question 24 :
In the cell division of bacteria, the septum is formed by

Question 25 :
Pick out the correct statements.<br/>(A) Mitosis takes place in the somatic cells and meiosis&#160;takes place in the germ cells.<br/>(B) During mitosis, the DNA replicates once for one cell&#160;division and in meiosis, the DNA replicates twice for two&#160;cell divisions.<br/>(C) Mitosis and meiosis occur both in sexually reproducing organisms.

Question 28 :
Identify the wrong pair of statements from the following.<br/>(I) Cell organelles are newly formed in G$_{ 2 }$ phase of cell cycle.<br/>(II) Doubling of DNA occurs in S phase of cell cycle.<br/>(III) The nuclei formed after meiosis I are haploid.<br/>(IV) Terminalization occurs in anaphase I.<br/>

Question 29 :
The process of self duplication does not occur in which of the following organelles?

Question 30 :
Where would you look for active cell division in a plant?

Question 32 :
Which one of the following statements is/are not true for meiosis?

Question 33 :
At what concentration of Mg$^{2+}$ ions, the dimer of ribosomes is formed?<br/>

Question 34 :
Bouquet stage is observed in ................ stage of the cell division.

Question 35 :
Match the correct set of scientists in relation to cell division.<br/><table class="wysiwyg-table"><tbody><tr><td>A. Robert Remak&#160;</td><td>&#160;1. Meiosis</td></tr><tr><td>B. A.Howard and S.R. Pelc</td><td>&#160;2. Mitosis</td></tr><tr><td>C. W. Fleming&#160;</td><td>&#160;3. Amitosis</td></tr><tr><td>D. Farmer and Moore</td><td>&#160;4. Cyclins</td></tr><tr><td></td><td>&#160;5. G$_1$, S and G$_2$ phase</td></tr></tbody></table>

Question 36 :
Assertion: Time taken for the completion of mitotic phase is 5-10% of the total cell cycle. Reason: It is the shorter than the interphase.

Question 37 :
Assertion: Cell division is necessary because it is a physiological process bound to occur as a rule of nature. Reason: Division of nucleus is followed by division of cytoplasm.

Question 38 :
In which stage, the centromere lie at equator and&#160;arms are directed towards poles?

Question 39 :
Arrange the following events of meiosis in the correct sequence.<br/>(a) Crossing over<br/>(b) Synapsis<br/>(c)&#160;Terminalisation of chiasmata<br/>(d)&#160;Disappearance of nucleolus