A.The meiotic division-I is also called reduction division.
R.During this the chromosomes are distributed in two cells in half their number.
A. Both A and R are true and R is correct explanation of A.
B. Both A and R are true and R is not correct explanation of A
C. A is true and R is wrong
D. A is wrong and R is true
Answer : Option A
A.During meiosis, the genetic material is replicated twice whereas the cell divides one.
R.Meiosis takes place in plants and animals during the formation of reproductive cells.
A. Both A and R are true and R is correct explanation of A.
B. Both A and R are true and R is not correct explanation of A
C. A is true and R is wrong
D. A is wrong and R is true
Answer : Option D
A.Number of chiasmata is more in longer chromosomes.
R.The number of chiasmata depends on the length of chromosomes.
A. Both A and R are true and R is correct explanation of A.
B. Both A and R are true and R is not correct explanation of A
C. A is true and R is wrong
D. A is wrong and R is true
Answer : Option A
Statement – P : \( G1_\) stage is the last stage or interphase
Statement – Q : Systhesis of DNA takes place in \(G2\) stage.
A. Statement P and Q both are correct
B. Statement P is correct statement Q is wrong
C. Statement P is wrong and statement Q is correct
D. Statement P and Q both are wrong
Answer : Option D
Statement – P : Interphase is divided in three sub phases.
Statement – Q : \(G1_\) phase is the initial phase of interphase.
A. Statement P and Q both are correct
B. Statement P is correct statement Q is wrong
C. Statement P is wrong and statement Q is correct
D. Statement P and Q both are wrong
Answer : Option A
Statement – P : In ‘S’ stage centrosome is duplicated
Statement – Q : In the prophase centrioles separate from each other and move towards the opposite poles.
A. Statement P and Q both are correct
B. Statement P is correct statement Q is wrong
C. Statement P is wrong and statement Q is correct
D. Statement P and Q both are wrong
Answer : Option C
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.
A. Both statements ‘X’ and ‘Y’ are correct
B. ‘X’ is correct and ‘Y’ is wrong
C. Both statements ‘X’ and ‘Y’ are wrong
D. ‘X’ is wrong and ‘Y’ is correct
Answer : Option A
Match the following :
Coulmn-I Coulmn-II
(A)\(G1\) Phase (i)Synthesis of proteins and Microtubules (B)S Phase (ii)Gr phase
(C)\(G2\) Phase (iii)Replication of DNA
A. a)(A - i) (B - ii) (C - iii)
B. (A - iii) (B - ii) (C - i)
C. (A - ii) (B - iii) (C - i)
D. (A - i) (B - iii) (C - ii)
Answer : Option C
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
A. (A - i) (B - ii) (C - iii) (D - iv) (E - v)
B. (A - iii) (B - iv) (C - ii) (D - i) (E - v)
C. (A - v) (B - iv) (C - iii) (D - ii) (E - i)
D. (A - ii) (B - iii) (C - iv) (D - v) (E - i)
Answer : Option B
Match the following :
Coulmn-I C oulmn-II
(A)Laptotene (i)Nucleolus disappears
(B)Zygotence (ii)Appearance of recombination nodules
(C)Pachytene (iii)Develoment of Synapsis
(D)Diplotene (iv)Chromosome appears filamentous
(E)Daikinesis (v)Genes exchange at chaismata
A. (A - iv) (B - iii) (C - ii) (D - v) (E - i)
B. (A - i) (B - ii) (C - iii) (D - iv) (E - v)
C. (A - v) (B - iv) (C - iii) (D - ii) (E - i)
D. (A - ii) (B - iii) (C - iv) (D - v) (E - i)
Answer : Option A