In This Post we are providing Chapter-10 Cell Cycle and Cell Division NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.
NCERT MCQ ON CELL CYCLE AND CELL DIVISION
Question 1.
Golgi complex and endoplasmic reticulum cannot be seen during
(a) late telophase
(b) late prophase
(c) early anaphase
(d) late metaphase
Answer: (b) late prophase
Explanation:
Cells, when viewed under microscope at the end of prophase, do not show golgi complex, endoplasmic reticulum, nucleolus and nuclear envelope.
Question 2.
Cell plate grows from
(a) walls to the centre
(b) centre to the walls
(c) in patches
(d) simultaneously
Answer: (b) centre to the walls
Explanation:
Cell plate grows during cytokinesis from centre to the walls.
Question 3.
Choose the correct sequence. A. Chromatin condensation B. Protein synthesis C. Duplication of centrioles D. Centrioles moves towards opposite poles
(a) C, A, B, D
(b) C, B, A, D
(c) C, D, B, A
(d) A, C, D, B
Answer: (b) C, B, A, D
Explanation:
Duplication of centrioles occurs in S-phase.
Protein synthesis occurs in G2 phase.
Chromatin condensation is followed by centrioles movement towards the poles. (Prophase)
Question 4.
If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into:
(a) Prophase
(b) Anaphase
(c) Telophase
(d) Metaphase
Answer: (d) Metaphase
Question 5.
Karyokinesis is the term used for
(a) division of cytoplasm
(b) division of nucleoplasm
(c) division of nucleus
(d) separation of daughter chromosomes
Answer: (d) separation of daughter chromosomes
Explanation:
Karyokinesis means separation of daughter chromosomes.
Cytokinesis means division of cytoplasm.
Question 6.
During which stage the chromosomes first become visible.
(a) Anaphase
(b) Metaphase
(c) Prophase
(d) Telophase
Answer: (c) Prophase
Question 7.
In mitosis, nuclear envelope and nucleolus disappear during
(a) Metaphase
(b) Interphase
(c) Prophase
(d) Telophase
Answer: (c) Prophase
Question 8.
Arrange the following events of meiosis in the correct sequence: I. Terminalization II. Crossing over III. Synapsis IV. Disjunction of genomes The correct sequences:
(a) II, I, IV, III
(b) III, II, I, IV
(c) IV, III, II, I
(d) I, IV, III, II
Answer: (b) III, II, I, IV
Question 9.
The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is
(a) splitting of the centromeres
(b) splitting of the chromatids
(c) replication of the genetic material
(d) condensation of the chromatin
Answer: (a) splitting of the centromeres
Question 10.
What type of plant is formed when colchicine is used in the process of development of Raphanobrassica?
(a) Autotetraploid
(b) Haploid
(c) Triploid
(d) Allotetraploid
Answer: (d) Allotetraploid
Question 11.
Meiosis occurs for the human female in ______.
(a) Pancreas
(b) Liver
(c) Ovary
(d) Kidney
Answer: (c) Ovary
Question 12.
Choose the correct sequence. A. Pachytene B. Zygotene C. Leptotene D. Diakinesis E. Diplotene
(a) C, B, A, D, E
(b) C, A, B, E, D
(c) C, B, A, E, D
(d) D, B, C, E, A
Answer: (c) C, B, A, E, D
Explanation:
These are the five phases of prophase I of Meiosis I based on the chromosomal behaviour.
Question 13.
How many chromosomes are there in onion root tip cell?
(a) 06
(b) 16
(c) 26
(d) 36Answer
Answer: (b) 16
Explanation:
There are 16 chromosomes in onion root tip cell.
Question 14.
Lambrush chromosomes are observed in
(a) Mitotic prophase
(b) Mitotic metaphase
(c) Meiotic metaphase
(d) Meiotic prophase
Answer: (d) Meiotic prophase
Question 15.
Which of the following cellular structures always disappears during mitosis and meiosis?
(a) Plasma membrane
(b) Nucleolus and nuclear envelope
(c) Plastids
(d) none of these
Answer: (b) Nucleolus and nuclear envelope
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