Q26
Allen
1. INTRODUCTION TO MODIFICATIONS OF MITOSIS
MCQ
The two asters together with spindle fibres form:-
A.
Mitotic apparatus
B.
Centromere
C.
Astral fibres
D.
Centrosome
Q27
Allen
1. INTRODUCTION TO MODIFICATIONS OF MITOSIS
MCQ
In prophase centrosome, which had undergone duplication during interphase, begins to move towards :
A.
Same pole of the cell
B.
Opposite poles of the cell
C.
One towards centre while another towards pole
D.
Both towards centre
Q28
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Which of the following not occurs in Anaphase-I but occurs in Anaphase-II:—
A.
Condensation of chromosomes
B.
Poleward movement of chromosomes
C.
Shortening of spindle fibres
D.
Splitting of centromere
Q29
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Crossing over takes place in :-
A.
Zygotene
B.
Pachytene
C.
Diplotene
D.
Diakinesis
Q30
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Which of the two events maintain the constant number of chromosomes across generations?
A.
Mitosis and Meiosis
B.
Meiosis and fertilisation
C.
Fertilisation and mitosis
D.
Only meiosis
Q31
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
Match the Columns
Match the column-I with column-II and select the correct answer :-
| Column-I | Column-II | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
A.
a-i, b-ii, c-iii,d-iv, e-v
B.
a-iv, b-v, c-ii, d-i, e-iii
C.
a-iii, b-iv, c-v, d-ii, e-i
D.
a-ii, b-iii,c-iv, d-i, e-v
Q32
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Which part of plant is suitable for the study of meiosis?
A.
Root apex
B.
Ovary
C.
Anther
D.
Shoot apex
Q33
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Slipping of chiasmata towards the ends of bivalent is called :-
A.
Terminalisation
B.
Diakinesis
C.
Interkinesis
D.
Congression
Q34
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
"Bouquet-stage" occur in which sub stages of prophase-I?
A.
Leptotene
B.
Zygotene
C.
Pachytene
D.
Diplotene
Q35
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
At anaphase-II of meiosis each chromosome contains:-
A.
4 chromatids
B.
3 chromatids
C.
2 chromatids
D.
1 chromatid
Q36
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
In Anaphase-I each chromosome composed of :-
A.
One chromatid
B.
Two chromatids
C.
Four chromatids
D.
Many chromatids
Q37
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
In meiosis, division of centromere occurs during:-
A.
Interphase
B.
Anaphase - I
C.
Anaphase - II
D.
Metaphase - I
Q38
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
In meiosis, nuclear membrane and nucleolus disappear during :-
A.
Zygotene
B.
Pachytene
C.
Diakinesis
D.
Metaphase - I
Q39
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Separation of homologous chromosomes during anaphase-I is called :-
A.
Synopsis
B.
Disjunction
C.
Nondisjunction
D.
Crossing over BCD039
Q40
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Diakinesis represents :-
A.
transition to prophase
B.
transition to metaphase
C.
transition to anaphase
D.
transition to telophase
Q41
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Synaptonemal complex is characteristic of :-
A.
Mitotic chromosomes
B.
Leptotene chromosomes
C.
Paired meiotic chromosomes
D.
Metaphase
Q42
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Each chromosome composed of one chromatid in:-
A.
Anaphase – I
B.
Anaphase – II
C.
Metaphase – I
D.
Metaphase – II
Q43
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
If the number of bivalents are 8 in metaphase-I, what shall be the number of chromosomes in daughter cells after meiosis-I and meiosis-II respectively:-
A.
8 and 4
B.
4 and 4
C.
8 and 8
D.
16 and 8
Q44
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Which of the following not occurs in anaphase-I?
A.
Segregation of homologous chromosomes
B.
Shortening in spindle fibres
C.
Poleward movement of chromosomes
D.
Division of centromere
Q45
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
In meiosis :-
A.
Division of nucleus twice but replication of DNA only once
B.
Division of nucleus twice and replication of DNA twice
C.
Division of nucleus once and replication of DNA is also once
D.
Division of nucleus once and DNA replication is twice
Q46
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
After meiosis–I:-
A.
the two chromatids of a chromosome are genetically similar
B.
the two chromatids of a chromosome are genetically different
C.
There occurs only one chromatid in each chromosome
D.
Four similar daughter cells are formed
Q47
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
The correct sequence of prophase-I of meiosis is :-
A.
Leptotene, pachytene, zygotene, diplotene, diakinesis
B.
Leptotene, diplotene, pachytene, zygotene, diakinesis
C.
Leptotene, zygotene, pachytene, diplotene, diakinesis
D.
Leptotene, zygotene, diakinesis, diplotene, pachytene
Q48
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Which of the following is called heterotypic division?
A.
Meiosis–I
B.
Meiosis–II
C.
Mitosis
D.
Amitosis
Q49
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
DNA replication occurs before :—
A.
Mitosis and meiosis—I
B.
Mitosis, meiosis—I and meiosis—II
C.
Meiosis-I only
D.
Mitosis only
Q50
Allen
2. MEIOSIS, SIGNIFICANCE OF MEIOSIS, DIFFERENCES BETWEEN MITOSIS AND MEIOSIS
MCQ
Thick-thread stage is :—
A.
Leptotene
B.
Zygotene
C.
Pachytene
D.
Diplotene