Q.1.
Astral rays are formed of ... ... [ CET Chd. 2003 ]
-
21%
a) Microfilaments
-
58%
b) Microtubules
-
14%
c) Intermediate filaments
-
7%
d) Microvilli
Q.2.
Cell plate grows from ... ... [ BHU 1992 ]
-
22%
a) Wall to centre
-
58%
b) Centre to walls
-
13%
c) One wall to another
-
7%
d) Simultaneously
Q.3.
In meiosis, chromosomes replicate during ... ... [ AFMC 2003 ]
-
29%
a) Prophase I
-
26%
b) Prophase II
-
11%
c) Telophase I
-
34%
d) Interphase
Q.4.
The stage at which DNA/ chromosome replication occurs is ... ... [ AMU 1998 ]
-
8%
a) Prophase
-
63%
b) Interphase
-
24%
c) Metaphase
-
5%
d) Previous telophase
Q.5.
Mitosis can occur in
-
26%
a) Diploid cell only
-
54%
b) Haploid and diploid cells both
-
13%
c) Haploid cell only
-
7%
d) Pollen mother cells
Q.6.
The period between two successive divisions is called......
-
18%
a) Cellcycle
-
44%
b) Interphase
-
25%
c) Cell division
-
13%
d) G1 phase
Q.7.
The two chromatids of a metaphase chromosome represents :
-
39%
a) homologous chromosome of a diploid set
-
27%
b) maternal and paternal chromosomes joined at the centromere
-
12%
c) non-homologous joined at the centromere
-
22%
d) replicated chromosomes to be separated at anaphase
Q.8.
Genetic homogeneity and exact similarity between chromosomes of various cell within the same type of issue of plant is due to :
-
40%
a) Mitosis
-
23%
b) Cytokinesis
-
12%
c) Fertilization
-
25%
d) Meiosis
Q.9.
During which of the following phase of mitosis asters appear round the centrioles ?
-
32%
a) Prophase
-
40%
b) Metaphase
-
20%
c) Anaphase
-
8%
d) Telophase
Q.10.
In how many cells the meiotic division has taken place, if the total number of gametes produced are 32 ?
-
18%
a) 4
-
34%
b) 8
-
36%
c) 16
-
13%
d) 32
Q.11.
At which phase of meiosis, the 2 cell, each with separated sister chromatids move towards opposite poles :
-
31%
a) anaphase-I
-
46%
b) anaphase-II
-
15%
c) metaphase-I
-
7%
d) metaphase-II
Q.12.
Which of the phase of mitosis is the longest? ... .. [ manipal 1995 ]
-
63%
a) Prophase
-
18%
b) Metaphase
-
13%
c) Anaphase
-
7%
d) Telophase
Q.13.
Match the following with respect to meiosis [ NEET 2020 ] Select the correct option from the following
| (a) Zygotene | (i) Terminalization |
| (b) Pachytene | (ii) Chiasmata |
| (c) Diplotene | (iii)Crossing over |
| (d) Diakinesis | (iv) Synapsis |
-
15%
a) a → i; b → ii; c → iv; d → iii;
-
13%
b) a → ii; b → iv; c → iii; d → i;
-
18%
c) a → iii; b → iv; c → i; d → ii;
-
53%
d) a → iv; b → iii; c → ii; d → i;
Q.14.
The correct sequence of phases of cell cycle is ... [ NEET 2019]
-
7%
a) M → G1→ G2→ S
-
14%
b) G1→ G2→ S → M
-
7%
c) S → G1→ G2→ M
-
71%
d) G1→ S → G2→ M
Explanation
Q.15.
Cell in G0 phase : [NEET 2019]
-
48%
a) exit the cell cycle
-
18%
b) enter the cell cycle
-
23%
c) suspend the cell cycle
-
12%
d) terminate the cell cycle
Q.16.
The concept of “Omnis cellula-e cellula” regarding cell division was first proposed by... ..[NEET 2019]
-
58%
a) Rudolf Virchow
-
17%
b) Theodor Schwann
-
17%
c) Schleiden
-
7%
d) Aristotle
Q.17.
The stage during which separation of the paired homologous chromosomes begins is ... ..[NEET 2018]
-
23%
a) Diakinesis
-
42%
b) Diplotene
-
23%
c) Pachytene
-
12%
d) Zygotene
Q.18.
Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of
-
7%
a) S phase
-
19%
b) G2 phase
-
29%
c) M phase
-
45%
d) G1 phase
Q.19.
Identify the correct statement with regard to G1 phase (Gap 1) of interphase.
-
66%
a) Cell is metabolically active, grows but does not replicate its DNA.
-
9%
b) Nuclear Division takes place.
-
16%
c) DNA synthesis or replication takes place.
-
10%
d) Reorganisation of all cell components takes place.
Q.20.
Which is not characteristic of meiosis ... ... [ AIIMS 2011 ]
-
46%
a) Two stage of DNA replication, first before meiosis I and Second before meiosis II
-
15%
b) Recombination and crossing over
-
18%
c) Sister chromatid separate during anaphase II
-
21%
d) Nuclear membrane disappears towards end of prophase
Q.21.
Nuclear spindle has types of fibers ... ... [ MPPMT 1995 ]
-
21%
a) One
-
52%
b) Two
-
18%
c) Three
-
8%
d) Four
Q.22.
Number of mitotic divisions required to produce 128 cells from a single cell ... ... [ AFMC 2002 ]
-
25%
a) 7
-
19%
b) 14
-
17%
c) 16
-
39%
d) 32
Q.23.
What precedes reformation of nuclear envelope in M-phase ... ... [ AFMC 2008 ]
-
43%
a) Decondensation of chromosomes and appearance of nuclear lamina
-
21%
b) Transcription of chromosomes and reassembly of nuclear lamina
-
17%
c) Formation of phragmoplast and contraction ring
-
18%
d) Formation of contraction ring and transcription from chromosomes
Q.24.
Identify the meiotic stage in which homologous chromosomes separate while the sister chromatids remains associated at their centromere ... ... [ CBSE main 2012 ]
-
13%
a) Metaphase I
-
25%
b) Metaphase II
-
46%
c) Anaphase I
-
15%
d) Anaphase II
Q.25.
What is incorrect about G0 ... ... [ AIIMS 2012]
-
15%
a) Cell metabolism continues in G0
-
30%
b) Cell growth occurs in G0
-
25%
c) Biocatalyst help exit G0
-
31%
d) Mitosis occurs after G0
Q.26.
Pick up the correct statement: A) Mitosis occurs in somatic cells and meiosis in germ cells B) DNA replicates once in mitosis and twice in meiosis C)Mitosis and meiosis occur both in sexually and asexually reproducing organisms ... ...[ kerla 2008 ]
-
42%
a) A only
-
19%
b) B only
-
14%
c) C only
-
25%
d) A and B only
Q.27.
Meiosis is ... ... [ HPPMT 1995 ]
-
12%
a) Equational
-
54%
b) Reductional
-
13%
c) Double division
-
21%
d) All the above
Q.28.
When does synthesis of DNA end? ... ... [ AMU 2002 ]
-
41%
a) S -phase
-
15%
b) Prophase
-
17%
c) Premitotic gap phase
-
26%
d) Post mitotic gap phase
Q.29.
Which one is not related to telophase? ... ... [ MPPMT 2009 ]
-
16%
a) Formation of nuclear membrane
-
10%
b) formation of nucleolus
-
30%
c) Elongation of chromosome
-
43%
d) chromatin fibers condense into chromosomes.
Q.30.
What is correct ... ... [ CBSE 2004 ]
-
13%
a) DNA content becomes double during G1 -phase
-
16%
b) Duration of interphase is short as compared to M-phase
-
13%
c) G2-phase follows mitotic phase
-
58%
d) DNA-replication occurs in S-phase