Download A Ronly C PandOonly D RandSonly ( ) A2 () ()

Danyal Education
Cell Division Assignment 2
Think about the following statements carefully. Are they true or false? Check the answers at the back of the
book to get rid of any misconceptions.
1
lf the parent cell has 46 chromosomes, then each daughter cell from mitosis will have
4
only 23 chromosomes.
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2
ln G1 and G2, the cell synthesises DNA, and builds more proteins and organelles.
3
4
5
Meiosis produces four diploid gametes.
Multiple Choice Auestions
()
ya
Da
n
C
3
The diagram below shows a cell of an animal
Two nuclei, each having 12 chromosomes
Two nuclei, each having 24 chromosomes
Two nuclei, each having 46 chromosomes
Four nuclei, each having 12 chromosomes
How many chromosomes are there in the
gametes of the animal?
What is the stage of cell division shown in the
diagram below?
A
)
in the process of meiosis.
A cell which has 24 chromosomes divides by
mitosis. What is the result?
A
B
C
D
2
4
o
l?
A Ronly
B Sonly
C PandOonly D RandSonly (
l E
du
c
1
I
ll
Which of the following occur(s) in metaphase
lnstruction: Answer all questions. For each question
there are four possible answers, A, B, C and D.
Ghoose the one you consider correct and record your
choice in the bracket.
o.
n
n
at
io
At the end of meiosis l, two diploid daughter cells are formed.
1
lt
n
ln meiosis. the chromosomes replicate twice.
PAPER
E
Prophase I
Prophase ll
B Tel op ha sel
D Tel op ha se ll
A2
5
Nucleolus disintegrates
Nuclear membrane disintegrates
Chromosomes separate
Homologous chromosomes line up at the
equator of the cell
two
Produces four
cells
gametes
Conserves the
Conserves the
number of
diploid number of
chromosomes chromosomes
Produces
daughter
ll
()
ll!
IV
QRS-
()
Which of the following are the differences
between mitosis and meiosis?
I
The table below shows four events, E O, R and
S, that occur in meiosis.
P
B 4
D 16
c8
A
B
C
D
Cytokinesis occurs Cytokinesis occurs
once only
twice
Daughter cells are Daughter cells are
haploid
.
diptoid
I and lll only
ll and lV only
l, ll and lll only
l, ll, lll and lV
(
)
209
6
9
The diagrams below show the stages of cell
division in an animal cell (2n = 4). Which of the
following stages occur in meiosis ll?
The diagram below shows a few stages in the
cell division of an animal cell.The time taken
for the process is 24 hours.
II
cell
H
-)
OE
UJ
R
cell S
cell Q
cell P
-->
4
ill
!
IV
tio
n
(J
Which of the following statements are true?
I Cell S has the same genetic material as cell P
ll Cell R is produced from cytokinesis which
7
only B
l, ll and lll only D
I and lll
ll and lV onlY
l, ll, lll and lV
(
)
The diagram below shows the cell division of
cell with diploid number of 4.
Ll
is four.
!V Cell O is haploid.
A
B
C
D
the stage shown?
O-Skincell
,'- c-
al
c
D
()
210
_"
Which of the following is true about the cell at
the end of cell division?
A
B
C
D
At the end of telophase, four gametes are
produced with each having eight structure O.
At the end of telophase, four gametes are
produced with each having two structure O.
At the end of telophase, two somatic cells are
produced with each having eight structure O.
At the end of telophase, two somatic cells are
produced with each having four structure O.
()
Which of the following nuclei is not the nucleus
of a gamete from the animal?
B
)
)-(--4
>-)'
a
Da
The diagram below shows the nucleus of
somatic cell in an animal.
A
(
Root meristem
ny
C OandRonly
D O, R and S only
8
-
l, ll and lll only
l, lll and lV only
ll, lll and lV only
division of meristem cells in a plant.
Which of the following cells is/are produced in
S
I and ll only
10 The diagram below shows a stage in the cell
)
)
P-Sperms
R - Urethra cell
A P only
B PandRonly
occurs after division of the nucleus.
The number of cell S produced after 48 hours
Ed
u
\
a
lll
ca
A
C
11 lf the somatic cell of an insect is diploid
(2n = ql, which of the following shows the
Which of the following stage occurs at X?
correct number of chromosomes in the somatic
cells of the insect before mitosis and after
meiosis?
Before
mitosis
A Metaphase C Death of cell
B Telophase D lnterphase
(
14 The graph below shows the changes in the
After meiosis
number of chromosomes in a single cell from
the meristem of the plant.
A
)
E
E
UJ
Total chromosomes
4n
tio
2n
E
()
n
B
c
g
Time
Which stage occurs at t?
lnterphase
Ed
uc
a
A
B
C
D
D
Prophase
Metaphase
()
Telophase
15 The process shown in the diagram below
()
causes genetic variation.
12 The diagram below shows a stage in the cell
division of an animal cell.
Name the process and an example of the
genetic variation caused by it.
Processl
al
Which is the correct chromosome number of
the daughter cell after cell division?
A n=2
B n=4
C n=8
D n=16
ny
(
13 The graph below shows the changes in the
number of chromosomes of cell.
)
Example,r,
A
Feftilisation
B
Meiosis
Colour blindness
c
Crossing over
Eye colour
D
Mitosis
Hair colour
ape of ear lobes
()
Da
Chromosome
content
X
t
4n
2n
\
fertilisation
n
sperm/egg
Stage
211
2 Structured and Free-response auestions
Section A Structured O,uestions
1 The diagram below shows the cell cycle of an animal cell
PAPER
E
R
G
.ut
o.
tio
n
o
<J
Cell division
(a)
(i)
Name the phase labelled R in the cell cycle.
(ii) What are phases K, L and M known
as?
uc
a
(b)Explain the changes which occur in phases K, L and M.
(c) What is the cell division process that occurs in N?
(d)The diagram below shows the sequence of the stages in one type of cell division
(i) Draw stages O and S to complete the diagram.
o
P
B
S
U
T
al
@
(ii)
Ed
@
The diagram below shows a somatic cell of a male insect with diploid number 2n = 4.
(a)
(i)
Da
2
ny
Label the diagram at stage S.
(iii) Name stage U and describe the process that occurs at this stage.
State the number of chromosomes in the somatic cell of the insect.
(ii) Draw a diagram of the daughter cell if the cell carries out mitosis.
(i)
Another insect has a gamete produced from a cell as shown in the diagram. Draw the diagrams
of the cell showing the behaviour of chromosomes in prophase l, metaphase l, anaphase I and
telophase I during meiosis. Describe briefly the events at each stage.
(ii) Draw two daughter cells that can be produced from meiosis.
(c) Based on your answer, state two differences between daughter cells from mitosis and meiosis.
(d) Explain how meiosis maintains the diploid number of chromosomes in the insect.
(b)
212
w
3
The diagram below shows the nucleus of a somatic cell in an organism
I
E
(a)
UI
(i)
State the function of O.
(ii) State the component of O which carries out this function.
(iii) Draw the components of O which carry out this function.
(b) Draw a diagram to show the behaviour of the chromosomes during
(i) early prophase in mitosis.
(ii) prophase I in meiosis.
(c) (i) Name two types of cells produced through meiosis.
(ii) How many chromosomes are there in each cell named in (c)(i)?
oI
4
uc
at
io
n
()
Mitosis plays a significant role in the growth and development of an organism. Describe the importance
of mitosis in
(a)growth;
(b) repair;
(c) asexual reproduction.
Section
Free-response Ouestions
(a) Meiosis I reduces the number of chromosomes by half, that is, from diploid
Ed
5
B
to haploid.
Explain this statement if the diploid number is 2n = 4.
(b)Meiosis
(c)
ll is similar to mitosis.
Explain this statement using a cell with diploid number 2n = 4.
Explain how crossing over occurs.
(ii) What is the significance of crossing over?
Cell division results in the growth of an organism. Describe the stages of cell division which
growth at the shoot and root tips.
will result
in
/
Da
ny
al
6
(i)
213