Q.1.
In animal cell........
-
0%
a) constriction of cytoplasm begins from the peripheral region of the cell.
-
0%
b) middle lamella made up of pectin develops.
-
33%
c) constriction of cytoplasm begins from the centre of the cell.
-
67%
d) (a) and (b) both
Q.2.
What is the average cell cycle span of a human cell ?
-
0%
a) 17 Hrs.
-
0%
b) 20 Hrs.
-
100%
c) 24 Hrs.
-
0%
d) 30 Hrs.
Q.3.
Meiosis involves :
-
0%
a) two nuclear division and one chromosome division
-
0%
b) one nuclear and two chromosomes division
-
50%
c) two each nuclear and chromosome division
-
50%
d) one each nuclear and chromosome division
Q.4.
Synapsis occurs between :
-
100%
a) spindle fibres and centromere
-
0%
b) a male and a female gamete
-
0%
c) m-RNA and ribosomes
-
0%
d) two homologous chromosomes
Q.5.
The sequence in the cell cycle is………
-
100%
a) S, G1, G2 M
-
0%
b) G1, S G2, M
-
0%
c) S, M G1, G2, M
-
0%
d) G2, S, M, G1
Q.6.
During which phase of prophase-I of meiosis does the process of synapsis occur ?
-
0%
a) Diplotene
-
0%
b) Leptotene
-
0%
c) Pachytene
-
100%
d) Zygotene
Q.7.
For the statement ‘X’ and statement ‘Y’ which of the following option is correct ? Statement – ‘X’ :During meiosis the genetic material is replicated once. Statement – ‘Y’ : Genetic material is not replicated during interkinesis.
-
50%
a) Both statements ‘X’ and ‘Y’ are correct
-
0%
b) ‘X’ is correct and ‘Y’ is wrong
-
0%
c) Both statements ‘X’ and ‘Y’ are wrong
-
50%
d) ‘X’ is wrong and ‘Y’ is correct
Q.8.
Match the following :
| Coulmn-I | Coulmn-II |
| (A) Prophase-I | (i) Chromosomes move toward one plane along with centromere. |
| (B) Metaphase-II | (ii) Half the number of chromosomes in seen |
| (C) Anaphase-I | (iii) Longest phase of meiosis-I |
| (D) Telophase-I | (iv) Two nuclei are seen |
-
100%
a) (A - iii) (B - i) (C - ii) (D - iv)
-
0%
b) (A - i) (B - ii) (C - iii) (D - iv)
-
0%
c) (A - ii) (B - iii) (C - iv) (D - i)
-
0%
d) (A - iv) (B - i) (C - i) (D - iii)
Q.9.
Complete disintegration of nuclear membrane and nucleolus take place during which stage of mitosis ?
-
100%
a) Prophase
-
0%
b) Metaphase
-
0%
c) Anaphase
-
0%
d) Telophase
Q.10.
In diploid living organisms crossing over is responsible for ?
-
0%
a) No Segregation of genes
-
0%
b) Linkage between genes
-
100%
c) Recombination of linked genes
-
0%
d) Dominancy of genes
Q.11.
The result of meiosis is the formation of....... Explanation provided please click on
-
0%
a) 2 cells
-
0%
b) 6 cells
-
100%
c) 8 cells
-
0%
d) 4 cells
Q.12.
Cytokinesis is generally, but not always, seen in mitosis. If cells undergo mitosis and do not follow cytokinesis then it would result in :
-
0%
a) Cells with abnormal small nuclei
-
100%
b) Ensuring genetic homogeneity of cell
-
0%
c) A cell with a single large nucleus
-
0%
d) A cell with two or more nuclei
Q.13.
During meiosis centromere divides :
-
0%
a) Only once at anaphase – I
-
0%
b) Twice in meiosis – I & II
-
100%
c) Only one at anaphase - II
-
0%
d) Twice in each cell at the end of anaphase – I & II
Q.14.
Which structure can be observed at the surface of centromere during metaphase ?
-
0%
a) Kinetochores
-
50%
b) Chromatophore
-
0%
c) Kinetophore
-
50%
d) Chromatophore
Q.15.
A. G1 phase is also called growth phase. R. There is a lot of biosynthetic activity during
-
100%
a) Both A and R are true and R is correct explanation of A.
-
0%
b) Both A and R are true and R is not correct explanation of A
-
0%
c) A is true and R is wrong
-
0%
d) A is wrong and R is true
Q.16.
How does the pairs of homologous chromosomes appear during zygotene phase ?
-
0%
a) Tetravalent
-
0%
b) Bivalent
-
100%
c) Trivalent
-
0%
d) Univalent
Q.17.
Crossing over occurs between.......
-
0%
a) Non – homologous chromatids of non homologous chromosomes
-
100%
b) Non – sister chromatids of homologous chromosomes
-
0%
c) Sister chromatids of homologous chromosomes
-
0%
d) Sister chromatids of non homologous chromosome
Q.18.
Which of the following statement is true for prophase ?
-
0%
a) At the end of this phase nuclear membrane is formed
-
0%
b) Centriole divides and arranged on opposite pole.
-
0%
c) At the end of this phase chromosomes disappear.
-
100%
d) In this phase condensation of chromosome takes place along their lengths.
Q.19.
The period between two successive divisions is called......
-
0%
a) G1 phase
-
0%
b) Cell division
-
0%
c) Cellcycle
-
100%
d) Interphase
Q.20.
Which of the following structure will not be common to mitotic cell of a higher plant ?
-
0%
a) Centriole
-
100%
b) Cell plate
-
0%
c) Centromere
-
0%
d) Spindle fibre
Q.21.
Pairing of homologous chromosomes during zygotene is termed :
-
0%
a) Synapse
-
100%
b) crossing over
-
0%
c) synapsis
-
0%
d) Terminalisation
Q.22.
Number of chromosomes are maintained from generation to generation by :
-
0%
a) Metamorphosis
-
0%
b) Mitotic division
-
100%
c) Division
-
0%
d) Meiosis division
Q.23.
The stage of mitosis during which the nucleolus disintegrates and chromosomes appear is known as
-
0%
a) Prophase
-
0%
b) Interphase
-
100%
c) Anaphase
-
0%
d) Metaphase
Q.24.
The number of meiotic divisions required to produce 400 seeds in a pea plant is..... Explanation is provided please clikc on
-
0%
a) 700
-
100%
b) 200
-
0%
c) 500
-
0%
d) 400
Q.25.
What is shown by given diagram and what is indicatd as ‘A’ in it ?
-
0%
a) Early prophase; A = Cleavage furrow
-
100%
b) Interphase (G2); A = Centrosomes
-
0%
c) Late prophase; A = Kinetochore
-
0%
d) Interphase (G1); A = Centrosomes
Q.26.
In which of the following stages chromosomes are not seen clearly ?
-
0%
a) Diplotene
-
0%
b) Prophase-II
-
100%
c) Metaphase-III
-
0%
d) Leptotene
Q.27.
What is average cell cycle span of a Yeast cell ?
-
100%
a) 70 min.
-
0%
b) 85 min.
-
0%
c) 90 min.
-
0%
d) 120 min.
Q.28.
The two chromatids of a metaphase chromosome represents :
-
0%
a) replicated chromosomes to be separated at anaphase
-
100%
b) maternal and paternal chromosomes joined at the centromere
-
0%
c) homologous chromosome of a diploid set
-
0%
d) non-homologous joined at the centromere
Q.29.
At which stage of mitosis chromatids separate and passes to different poles :
-
100%
a) Telophase
-
0%
b) Anaphase
-
0%
c) Prophase
-
0%
d) Metaphase
Q.30.
Statement – P : G1 stage is the last stage or interphase. Statement – Q : Systhesis of DNA takes place in G2 stage.
-
0%
a) Statement P and Q both are correct
-
0%
b) Statement P is correct statement Q is wrong
-
0%
c) Statement P is wrong and statement Q is correct
-
0%
d) Statement P and Q both are wrong