Cell
Question 1
|
Which stages of cell division do the following figures A and B represent respectively?
Fig. A | Fig. B | |
(1)
|
Prophase
|
Anaphase
|
(2)
|
Metaphase
|
Telophase
|
(3)
|
Telophase
|
Metaphase
|
(4)
|
Late Anaphase
|
Prophase
|
1
| |
2
| |
3
| |
4
|
Question 2
|
During oogenesis the cell that is fertilized by a sperm to become an egg is
primary spermatocyte
| |
secondary oocyte
| |
primary oocyte
| |
secondary spermatocyte
|
Question 3
|
A bivalent consists of
Two chromatids and one centromere
| |
Four chromatids and two centromeres
| |
Two chromatids and two centromeres
| |
Four chromatids and four centromeres
|
Question 4
|
A change in the amount of yolk and its distribution in the egg will affect:
Fertilization
| |
Formation of zygote
| |
Pattern of cleavage
| |
Number of blastomeres produced
|
Question 5
|
Chromosomes can be counted best at the stage of
Metaphase
| |
Late anaphase
| |
Telophase
| |
Late prophase
|
Question 6
|
The stage in which daughter chromosomes move toward the poles of the spindle is
Anaphase
| |
Metaphase
| |
Prophase
| |
Telophase
|
Question 7
|
Chiasmata are first seen in
Pachytene
| |
Zygotene
| |
Leptotene
| |
Diplotene
|
Question 8
|
Protein subunit found within microtubules is
Collagen
| |
Tubulin
| |
Myosin
| |
DNA
|
Question 9
|
Balbiani rings occur in
Autosome
| |
Heterosome
| |
Lampbrush chromosome
| |
Polytene chromosome
|
Question 10
|
Cell plate grows from
One wall to another
| |
Centre to wall
| |
Wall to centre
| |
Simultaneously
|
Question 11
|
Which of the following cellular structures always disappears during mitosis and meiosis?
Plasma membrane
| |
Nucleolus and nuclear envelope
| |
Plastids
| |
none of these
|
Question 12
|
Centromere is a constituent of
Ribosome
| |
ER
| |
Chromosome
| |
Mitochondrion
|
Question 13
|
Chiasma formation occurs in
Pachytene
| |
Zygotene
| |
Leptotene
| |
Diplotene
|
Question 14
|
Crossing-over results in
Recombination of linked alleles
| |
Dominance of alleles
| |
Segregation of alleles
| |
Linkage between genes
|
Question 15
|
Cytoplasmic division of a cell is called
Cell plate formation
| |
Cytokinesis
| |
Mitosis
| |
Synapsis
|
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