Cytokinesis

Q.

MYSQL full form?

Q.

During which phase of the cell cycle does the cell increase in size?

1. G0 phase

2. G1 phase

3. S phase

4. G2 phase

Q.

Which is the structure in plant cells that helps in the formation of spindle fibres?

Centrosome

Cell wall

Centriole

Microtubules

Q.

In animal cytokinesis, cleavage occurs with the help of

1. Microtubules

2. Microfibrils

3. Microfilaments

4. Spindle fibres

Q.

Is the M Phase the longest phase?

Q. During cytokinesis, ________ divides the cytoplasm of a plant cell into two.

1. a furrow
2. plasma membrane
3. cell plate
4. centriole

Q.

The movement of chromosomes towards opposite poles during Anaphase – I of meiosis is called:

1. Non – disjunction

2. Disjunction

3. Metakinesis

4. Cytokinesis

Q. Observe the given diagram and answer the following questions:

Consider the following statements:

P. More DNA is synthesised

Q. Nuclear membrane disappears

R. Interval between the M phase of the cell cycle and DNA synthesis

S. Centrioles move towards the opposite poles

T. Longest phase of the cell cycle

U. Synthesis of RNA and proteins

The correct statements with respect to phase X are:

[3 Marks]

1. Statements P, Q, and R
2. Statements P, R, and S
3. Statements R, T, and U
4. Statements R, Q, and T

Q.

Cytoplasmic division of a cell is called:

1. Karyokinesis
2. Crossing over

3. Cytokinesis

4. Synapsis

Q.

The diagram below represents a stage during cell division. Study the same and then answer the question that follow:

Name the stage prior to this stage and draw a diagram to represent the same.

Q. Why does a furrow form in an animal cell during late anaphase?

Q.

If the cell cycle is restricted in $G_1$ phase of cell, the condition is known as -

1. ​ phase

2. S phase

3. ​ phase

4. M phase

Q.

Which of the following organelles will be distributed between daughter cells during cytokinesis?

1. Plastids and ER

2. ER and Golgi complex

3. Mitochondria and plastids
   

4. Plastids and vacuoles

Q. Which of the following organelles are distributed between daughter cells during cytokinesis?

1. Nucleus

2. Nucleolus

3. Mitochondria
   

4. Plastids

Q.

Regarding the assertion and reason; choose the correct option_____.

Assertion [A]: Prophase I of Meiosis I is the longest phase during the formation of gametes.

Reason [R]: It has five sub-stages Leptotene, Zygotene, Pachytene, Diplotene and

Diakinesis; during which the number of chromosomes is doubled.

1. Assertion [A] is True and Reason [R] is False.

2. Reason [R] is True and Assertion [A] is False.

3. Assertion [A] is True and Reason [R] is True and is a correct explanation to [A].

4. Assertion [A] is True and Reason [R] is True but is an incorrect explanation to [A].

Q. The given alongside shown a certain stage in cell division in a cell with four chromosomes.
(i) Name the parts of the chromosome labelled 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 the diagram.
Figure

Q.

what are the basic differences between the phases of mitosis nad miosis?

Q. The diagram alongside represents a plant cell after being placed in a strong sugar solution. Guidelines 1 to 5 indicate the following:
1. Strong sugar solution
2. Cell wall
3. Protoplasm
4. Large vacuole
5. Nucleus
Figure

Study the diagram and answer the questions that follow:
(i) What is the state of the cell shown in the diagram
(ii) Name the structure which acts as a selectively permeable membrane.
(iii) If the cell had been placed in distilled water instead of strong sugar solution which feature would not have been present?
(iv) If the cell in the diagram possessed chloroplasts where would these be present?
(v) Name any one feature of this plant cell which is not present in animal cells.

Q.

Distinguish between:

Karyokinesis and Cytokinesis

Q. The point where crossing over takes place in meiosis.

Q.

Plant and animal cell divisions differ in

1. Cytokinesis

2. Prophase

3. Metaphase

4. Telophase

Q.

Cytokinesis of a plant cell is by

1. The furrowing of the cytoplasm

2. The formation of cell plate

3. The formation of asters

4. All of the above

Q. mRNAs are capped by

1. Modified GTP at the 3’ end and modified ATP at the 5’ end
2. Modified GTP at the 5’ end and Poly A tail at the 3’ end
3. Modified GTP at the 3’ end and Poly A tail at the 5’ end
4. Modified Poly G tail at the 3’ end and ATP at the 5’ end

Q. what is genotopical and phenotopical rati

Q.

Cytokinesis of a plant cell is by

1. The furrowing of the cytoplasm

2. The formation of cell plate

3. All of the above

4. The formation of asters

Q.

The movement of chromosomes towards opposite poles during Anaphase – I of meiosis is called:

1. Metakinesis

2. Non – disjunction

3. Cytokinesis

4. Disjunction

Q. The diagram alongside represents a plant cell after being placed in a strong sugar solution. Guidelines 1 to 5 indicate the following:
1. Strong sugar solution
2. Cell wall
3. Protoplasm
4. Large vacuole
5. Nucleus
Figure

Study the diagram and answer the questions that follow:
(i) What is the state of the cell shown in the diagram
(ii) Name the structure which acts as a selectively permeable membrane.
(iii) If the cell had been placed in distilled water instead of strong sugar solution which feature would not have been present?
(iv) If the cell in the diagram possessed chloroplasts where would these be present?
(v) Name any one feature of this plant cell which is not present in animal cells.

Q. Spindle fibre is made of

1. Humulin
2. Intermediate filament
3. Flagellin
4. Tubulin

Q.

Which of the following organelles will be distributed between daughter cells during cytokinesis?

1. ER and Golgi complex

2. Mitochondria and plastids
   

3. Plastids and vacuoles

4. Plastids and ER

Q. Cytokinesis in plant and animal cells take place in a similar way.

1. True
2. False