Name:
Chap: 5
OBT Marks:
Paper: Biology
Class: 9th
Total Marks: 25
---------------------------------------------------------------------------------------------------------------------------------Q;1
i)
ii)
iii)
iv)
v)
vi)
vii)
viii)
Section A-Objective
Choose the Correct Answers
/5
Cell that have temporarily or permanently stopped dividing are said to be in
phase:
(a) S-phase
(b) Go phase
(c)
G1 phase
(d)
G2 phase
Which cell type undergoes meiosis:
(a) Somatic
(b)
Liver
(c)
Epithelial (d)
Germ
Which of the following distinguishes meiosis from mitosis:
a) The chromosome number is reduced
b) Chromosome undergo crossing over
c) The daughter cells are genetically different from the parent cell
d) All of the above
In plant cell, spindle fibers are formed by the aggregation of tubulin proteins
on the surface of:
(a) Cell
(b Plasma membrane
(c)
Nuclear envelop (d)
None
A new nuclear envelop forms around each set of separated chromosomes
during:
(a) Prophase
(b) Metaphase
(c)
Anaphase
(d)
Telophase
Vesicles derived from Golgi apparatus move in the middle off the cell and
fuse to give rise to:
(a Cell wall
(b) Phragomoplast
(c) Nucleolus
(d) Spindle
Find the correct statement :
a) Homologus chromosomes forms pairs during mitosis
b) Chromosomes do not duplicate in the interphase preceding meiosis I
c) Homologus chromosomes form pairs during meiosis but not mitosis
d) Spindles are not required during meiosis
Meiosis does not occur in:
(a) Fungi
(b) Algae
(c)
Protista
(d)
Prokaryotes
ix)
Prior to cell division, each chromosome replicates or duplicates its genetic
material. The products are connected by a centromere and are called;
a) Sister chromosomes
b) homologus chromosomes
c) Non-sister chromatids
d) Sisters chromatids
x)
Which event distinguishes meiosis from mitosis?
a) Condensation of chromosomes
b) loss of nuclear membrane
c) formation of metaphase plate
d) pairing of homologus chromosomes
Section B - Subjective
Q;2
Answer the following Questions briefly.
4 x 3 = 12
i)
How is cytokinesis different in plant cell as compared to animal cell?
ii)
Define following:
a) Mitosis
b) Meiosis
c) G0 phase
iii)
List the events which occur in Prophase of mitosis?
iv)
Define the cell cycle? Discuss the phases of cell cycle?
Section C
Q;3
Attempt the following Questions.
i) .
ii).
Discuss Meiosis I in detail?
Contrast mitosis and meiosis , emphasizing the events that lead to different
outcomes?
4x 2 = 8