Q.1.
Which is the longest phase of meitoic division ?
-
50%
a) Prophase-I
-
38%
b) Metaphase-I
-
0%
c) Anaphase-I
-
12%
d) Telophase-I
Q.2.
Identify “A” and “B” and mention the stage of given diagram.
-
50%
a) centrioles, kinetochore, late prophase
-
17%
b) Preprophase, kinetochore, chromatids
-
33%
c) Kinetochore, chromatids, late prophase
-
0%
d) Late prophase kinetochore, chromatids
Q.3.
Which plant material is best suited for studying mitosis in class room ?
-
0%
a) Pieces of bark
-
20%
b) Anther
-
40%
c) Shoot apex
-
40%
d) Root tips
Q.4.
Syncytium means........
-
20%
a) process of constriction of cytoplasm from peripheral region of cell that extends towards the centre.
-
40%
b) a condition arises when karyokinesis is not followed by cytokinesis.
-
40%
c) a multinucleate condition arises when karyokinesis and cytokinesis is over.
-
0%
d) small disc shaped structures at the surface of the centromeres.
Q.5.
The difference in the division of a plant cell and animal cell is in.....
-
40%
a) Cell membrane formation
-
20%
b) Spindle formation
-
40%
c) Movement of chromosomes from equatorial plane
-
0%
d) Coiling of the chromosomes
Q.6.
At Which sub stage of meiosis crossing over takes place ?
-
0%
a) Diplotene
-
75%
b) Pachytene
-
0%
c) Leptotene
-
25%
d) Zygotene
Q.7.
In which stage of mitosis division segregation of chromatids occur and they migrate at different polar ends.
-
75%
a) Anaphase
-
25%
b) Telophase
-
0%
c) Prophase
-
0%
d) Metaphase
Q.8.
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells ?
-
67%
a) 21
-
33%
b) 42
-
0%
c) 63
-
0%
d) 84
Q.9.
Interphase can be divided into how many sub phases ?
-
33%
a) 2
-
33%
b) 3
-
33%
c) 5
-
0%
d) 8
Q.10.
During mitotic metaphase :
-
0%
a) chromosomes are divided
-
0%
b) chromosomes become thread like and condensed
-
33%
c) crossing over occurs
-
67%
d) chromosomes are located at equator.
Q.11.
G2 phase is between :
-
67%
a) end of mitosis and start of S phase
-
33%
b) end of S phase and start of mitosis
-
0%
c) start of S phase and start of mitosis
-
0%
d) end of S phase and end of mitosis
Q.12.
Nucleus is reformed
-
50%
a) Prophase-II
-
50%
b) Telophase-I
-
0%
c) Anaphase-II
-
0%
d) Metaphase-II
Q.13.
During which phase can nucleolus be observed clearly ?
-
0%
a) Metaphase-II
-
100%
b) Metaphase
-
0%
c) Early Prophase
-
0%
d) Anaphase
Q.14.
If there are four chromosomes present during prophase – I, how many chromosome are there in each cell at the end of anaphase - II
-
100%
a) 2
-
0%
b) 4
-
0%
c) 8
-
0%
d) 16
Q.15.
Match the following :
| Coulmn-I | Coulmn-II |
| (A) Prophase | (i) Nuclear membrane and other orgenelles reorganise |
| (B) Metaphase | (ii) Arrangement of chromatids on the poles |
| (C) Anaphase | (iii) Formation of cytoplasmic fibres of proteins |
| (D) Telophase | (iv) Arranged on equatorial plane |
| (E) Cytokinesis | (v) The formation of syncytium |
-
0%
a) (A - v) (B - iv) (C - iii) (D - ii) (E - i)
-
0%
b) (A - ii) (B - iii) (C - iv) (D - v) (E - i)
-
0%
c) (A - i) (B - ii) (C - iii) (D - iv) (E - v)
-
100%
d) (A - iii) (B - iv) (C - ii) (D - i) (E - v)
Q.16.
Which of the following is present in maximum number in an adult person ?
-
100%
a) Somatic cell
-
0%
b) Reproductive cell
-
0%
c) Gamete
-
0%
d) Zygote
Q.17.
Which of the following statement is/are correct for Prophase-I ? (i) During diplotene, the members of each pair of homologous chromosomes start moving away from one another. (ii) In zygotene, bivalent chromosomes appear tetravalent. (iii) In diakinesis, chromatids become separated even at the site of chiasmata.
-
0%
a) only (i)
-
33%
b) only (ii)
-
67%
c) only (i) and (iii)
-
0%
d) (i), (ii) and (iii)
Q.18.
What does “R” indicate in the given diagram ?
-
0%
a) Cytoplasn
-
0%
b) Kinetochore
-
0%
c) Spindle fibers
-
100%
d) Cleavage furrow
Q.19.
At which stage, the homologous chromosomes separate due to repulsion, but are yet held by chiasmata :
-
0%
a) Zygotene
-
25%
b) Diakinesis
-
25%
c) Pachytene
-
50%
d) Diplotene
Q.20.
Find out the incorrect pair.
-
33%
a) Telophase – Chromatin is observed
-
67%
b) G1 phase – New DNA is synthesized
-
0%
c) Prophase – nuclear membrane disintegrates
-
0%
d) Zygotene - Synapsis
Q.21.
How many mitotic division are needed for a single cell to make 128 cells ?
-
67%
a) 7
-
0%
b) 25
-
33%
c) 34
-
0%
d) 54
Q.22.
Due to crossing over, an opportunity for the exchange of genes becomes possible.
-
0%
a) S - phase
-
33%
b) Cell Cycle
-
0%
c) G2 phase
-
67%
d) Significance of meiosis
Q.23.
Mitosis actually means……
-
25%
a) Reduction in number of chromosomes
-
25%
b) Division of nucleus only
-
0%
c) Division of cytoplasm only
-
50%
d) Both nuclear (Karyokinesis) and cytoplasmic divisions.
Q.24.
The telophase stage of mitosis is…….
-
75%
a) The last stage of karyokinesis
-
0%
b) More or less opposite of prophase stage.
-
0%
c) The stage where spindle fibres are abosorbed in cytoplasm
-
25%
d) All of the above
Q.25.
If the initial amout of DNA is denoted as 2C then it increases into :
-
0%
a) 2C
-
75%
b) 4C
-
0%
c) 6C
-
25%
d) 8C
Q.26.
In the plant cell, cytokinesis occurs by
-
25%
a) Separation of the cytoplasm from the periphery to central region.
-
0%
b) Separation of the cytoplasm throughout the equatorial plane simultaneously
-
75%
c) Separation of the cytoplasm from cell centre to its periphery
-
0%
d) Following of cytoplasm from two side at right angles to the plane of spindle pole
Q.27.
During mitosis nuclear membrane and nucleolus begin to disappear at :
-
20%
a) Late metaphase
-
40%
b) Early mataphase
-
20%
c) Early prophase
-
20%
d) Late prophase
Q.28.
Select correct statement’s for cell cycle. (i) Yeast cell can complete on cell cycle in every 90 minutes (ii) A period between creation of a cell and division of that cell. (iii) Cell cycle is mainly divided into interphase and differentiation like two phases.
-
25%
a) (i) and (ii) only
-
50%
b) (i) and (iii) only
-
0%
c) (ii) and (iii) only
-
25%
d) (i), (ii) and (iii)
Q.29.
Which of the following cell can complete one cell cycle in 90 minutes ?
-
0%
a) Plant cell
-
0%
b) Angal cell
-
0%
c) Animal Cell
-
100%
d) Yeast Cell
Q.30.
Crossing over involves.......
-
25%
a) Duplication of chromosomes
-
0%
b) Deletion of chromosomes
-
75%
c) Exchange of genetic matetial
-
0%
d) Addition of chromosome