CTET Biology Quiz

1) Starting of metaphase is marked by
A) Complete disintegration of nuclear membrane
B) Disappearance of ER, GB , nucleolus and nuclear envelope
C) Initiation of condensation of chromosomal material
D) Chromosomes aligns at the equatorial plate

2) End of prophase is marked by
A) Complete disintegration of nuclear membrane
B) Disappearance of ER, GB , nucleolus and nuclear envelope
C) Initiation of condensation of chromosomal material
D) Chromosomes aligns at the equatorial plate

3) The completion of prophase can be marked by
A) Chromosomal material condenses to form compact mitotic chromosomes
B) Initiation of condensation of chromosomal material
C) Initiation of the assembly of mitotic spindle
D) Both A & C

4) Anaphase stage is characterised by 
A) Centromeres split and chromatidsseparate
B) Chromatids move to opposite poles
C) Nucleolus , GB and ER reform
D) Both A &B

5) Read the following statements and find out the incorrect statement 
A) In an animal cell, cytokinesis is achieved by the appearance of a furrow in the plasma membrane.
B) Furrow formation starts in the centre of cell and grows outward to meet the existing lateral walls
C) Cell plate represents the middle lamella between the walls of two adjacent plant cells
D) During cytokinesis , organelles like mitochondria and Plastids get distributed between the two daughter cells

6) Major event that occurs during anaphase of mitosis which brings about equal distribution of chromosomes is
A) Splitting of centromeres
B) Condensation of chromatin
C) Replication of genetic material
D) Splitting of chromatids

7) Which is unique to mitosis and does not occur in meiosis ?
A) Homologous chromosomes cross over
B) Homologous chromosomes pairs and form bivalents
C) Homologous chromosomes be have independently
D) Chromatids are separated during anaphase

8) Recombination between homologous chromosomes is completed by the end of
A) Pachytene
B) Leptotene
B)C) Diplotene
D) Zygotene

9) Meiosis involves
A) Two nuclear division and one chromosome division
B) One nuclear division and one chromosome division
C) One nuclear division and two chromosome divisions
D) Two nuclear division and two chromosome divisions

10) Meiotic cell division is also termed as reduction division because of
A) Involvement of gametes
B) Doubling of chromosomes
C) Elimination of chromosomes
D) Number of chromosomes becomes halved

11) Tetrad is made of
A) Four homologous chromosomes with four chromatids
B) Two homologous chromosomes , each with two chromatids
C) Four non-homologous chromatids
D) four non-homologous chromosomes

12) Meiosis II performs
A) Separation of sex chromosomes
B) Synthesis of DNA and centromere
C) Separation of homologous chromosomes
D) Separation of chromatids

13) ( A) : The M phase represents the phase when the actual cell division occurs
( R ) : Interphase represents the phase between two successive M phases 
A) If both A & R are true and the R is the correct explanation of the A
B) If both A & R are true but R is not the correct explanation of the A
C) If A is true but R is false
D) If both A & R are false

14) (A) :Mitotic cell division is also called equational division
(R) :Number of chromosomes in the parent and progeny cells is the same in mitosis
A) If both A & R are true and the R is the correct explanation of the A
B) If both A & R are true but R is not the correct explanation of the A
C) If A is true but R is false
D) If both A & R are false

15) ( A) : In animals , mitotic cell division is only seen in the diploid somatic cells
( R) : The plants can show mitotic cell division in both haploid and diploid cells
A) If both A & R are true and the R is the correct explanation of the A
B) If both A & R are true but R is not the correct explanation of the A
C) If A is true but R is false
D) If both A & R are false

16) Select the correct matches:
a) S-phase- DNA replication
b) zygotene  Synapsis
c) Diplotene-Crossing over
d) Meiosis  Both haploid and diploid cells
e) Gap 2 phase  quiescent stage
A) a& b
B) a& d
C) c & e
D) a,c & e

17) Select the correct option with respect to mitosis
A) Golgi complex and endoplasmic reticulum are still visible at the end of prophase
B) Chromatids separate but remain in the centre of cell in anaphase
C) Chromosomes move to spindle equator and get aligned along equatorial  plate in metaphase
D) Chromatids start moving towards opposite poles in telophase

18) Which is not characteristic of meiosis ?
A) Two stages of DNA replication , first before meiosis I and second before meiosis II
B) Recombination and crossing over
C) Sister chromatids separate during anaphase II