Frank solutions for Biology II [English] Class 7 ICSE chapter 1 - Cell Division [Latest edition]

Why is cell division necessary?

What do you understand by cell cycle?

Describe anaphase in mitosis.

Define the following:

Karyokinesis

Define the following:

Cytokinesis

Define the following:
Chiasmata

How many daughter cells would you expect if 4 cells undergo
(i) Mitosis
(ii) Meiosis
(iii) Amitosis

Fill in the blank:

______ takes place in body cells resulting in growth and development.

Fill in the blank:

The energy for cell division is stored as ______.

Fill in the blank:

Both ______ and heterotypic divisions occur in meiosis.

Fill in the blank:

Meiotic division is also called ______ division.

Fill in the blank:

______ is the indirect cell division.

The diagram given alongside represents a stage in cell division.
Study the same and answer the questions that follow:

(i) Identify the stage of cell division.
(ii) Name the parts labeled A,B,C and D.
(iii) What is the unique feature observed in this stage?
(iv) Where does this type of cell division usually occur?
(v) How many daughter cells are formed from this type of cell division?
(vi) Is the dividing cell shown a plant or an animal cell?
Give a reason to support your answer.

The fig given alongside shows a certain stage in a cell division in a cell  with four chromosomes.

(i) Name the parts of the chromosome labeled A and B.
(ii) Name the structure C. what is its function?
(iii) Name the type of division . Give a reason.
(iv) Name the stage of division.
(v) Name the stages before and after the stage shown in diagram.

Choose the correct answer:

Which division takes most time?

Choose the correct answer:

Somatic cells divide by

Choose the correct answer:

Cytokinesis involves

Choose the correct answer:
In meiosis, chromosome number is reduced by

Choose the correct answer :
Mitosis results in

Choose the correct answer:
Centromere is related to ________

Choose the correct answer:
Crossing over is a feature of _______________

Choose the correct answer:
DNA replication takes place in _____________

Choose the correct answer:
In an interphase cell chromosome are as _____________

Choose the correct answer:
During mitosis which of the following disintegrate _________

Choose the correct answer:
Chromosomes appear at equator in ____________

Choose the correct answer:
Chromosomes number is halved in _____________

Choose the correct answer:
If after karyokinesis, cytokinesis does not occur, then result would be ___________

Choose the correct answer:
Gametes are formed by ________________

Choose the correct answer:
Minimum coiling in chromosome is at ______________

Choose the correct answer:
Chromosome is most coiled at (in mitosis) ____________

Choose the correct answer:
Nuclear membrane reappears in _________________

Choose the correct answer:
Which division takes most time?

Choose the correct answer:
Somatic cells divide by ___________

Choose the correct answer:
Cytokinesis involves ________

Choose the correct answer:
In meiosis, chromosome number is reduced by ______________

Choose the correct answer:
Mitosis results in _____________

Choose the correct answer:
Centromere is related to _______________

Choose the correct answer:
Crossing over is a feature of ______________

Choose the correct answer:
DNA replication takes place in ______________

Choose the correct answer:
In an interphase cell chromosome are as _____________

Choose the correct answer:
During mitosis which of the following disintegrate ___________

Choose the correct answer:
Chromosomes appear at equator in _____________

Choose the correct answer:
Chromosomes number is halved in ____________

Choose the correct answer:
If after karyokinesis, cytokinesis does not occur, then result would be _____________

Choose the correct answer:
Gametes are formed by _____________

Choose the correct answer:
Minimum coiling in chromosome is at ________________

Choose the correct answer:
Chromosome is most coiled at (in mitosis) ________________

Choose the correct answer:
Nuclear membrane reappears in ____________