Question

3. Match the events given in column A with the phase
in mitotic cell division in Column B
Column "A"
(a) Chromosomes get arranged in
a horizontal plane the equazor
(6) Daughter chromosomes move Prophase
to the opposite poles of a spindle.
(c) Chromosomes become visible as
fine long threads
(d) Chromosomes lose their
distinctiveness and gradually
become transformed into a
chromatin network
A.
(Choose the best option out of the four alternatives
a, b, c and d)
1. The chromatin material is formed of
(a) DNA only
(b) DNA and Histones
(c) Histones only (d) Nucleotides
2. The term "chromosomes" literally means
(a) Inherited bodies (b) Twisted threads
(c) Coloured bodies (d) Shining threads
3. The number of chromosomes in a certain type of
cell division is halved. This kind of cell division
occurs in
(a) only testis
(b) only ovary
(c) both ovary and testis (d) all body cells
4. In which one of the following options the stages of
mitosis have been given in correct sequence ?
(a) Prophase, metaphase, telophase, anaphase
(b) Prophase, metaphase, anaphase, telophase
(c) Anaphase, telophase, prophase, metaphase
(d) Telophase, anaphase, prophase, metaphase
5. Synthesis phase in the cell cycle is called so for the
synthesis of more of
(a) RNA
(b) RNA and proteins
(c) DNA
(d) Glucose
4. Fill in the blanks
(a) DNA replicates in the
of the code
b) Mitosis occurs in our
ces
(c) Mitosis produces two daughter cells whereas meiosis _
produces
daughter cells
) Meiosis occurs only in -
(e) Modern humans have 46 chromosomes. Their
sperms
and
each.
(1) During the pairing of chromosome Dosis, the
chromosomes come to be side by side
​

Answer 1

Answer:

1.

a) Chromosomes get arranged in  a horizontal plane the equator:Anaphase

b)Daughter chromosomes move to opposite poles of the spindle:Prophase

c)Chromosomes become visible as  fine long threads:Telophase

d)Chromosomes lose their  distinctiveness and gradually become transformed into a  chromatin network:Metaphase

2.

1. DNA only
2. Coloured bodies
3. both ovary and testis
4. Prophase, metaphase, anaphase, telophase
5. DNA

3.

a)DNA replicates in the S phase of the cell cycle.

b)Mitosis occurs in our somatic cells.

c)Mitosis produces two daughter cells whereas meiosis produces 2 daughter cells.

d)Meiosis occurs only in reproductive cell.

e) Modern humans have 46 chromosomes. Their  sperms  and egg will have 23 chromosomes  each.

4.During the pairing of chromosomes in meiosis, the homologous chromosomes come to be side by side