Causes recombination between genes of homologous chromosomes.

Occurs in dyad stage of meiosis.

Occurs after chiasmata formation in leptotene.

Occurs in diplotene, the longest phase of meiosis.

Botany - Cell Cycle Cell Division - Quiz-8

A somatic cell that has just completed the S-phase of its cell cycle, as compared to gamete of the same species has

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Twice the number of chromosomes and twice the amount of DNA
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same number of chromosomes but twice the amount of DNA
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twice the number of chromosomes and four times the amount of DNA
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four times the number of chromosomes and twice the amount of DNA

The microtubules from the opposite poles of the spindle attach to the pair of homologous chromosomes in

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Metaphase - I
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Prophase - I
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Metaphase
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Metaphase - II

Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage?

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Prophase-I during meiosis
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Prophase-II during meiosis
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Prophase of mitosis
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Both prophase and metaphase of mitosis

Which stages of cell division do the following figures A and B represent respectively?

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Metaphase- telophase
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Telophase- Metaphase
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Late anaphase- Prophase
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Prophase- Anaphase

Cells in $G_{0}$ phase:

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terminate the cell cycle
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exit the cell cycle
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enter the cell cycle
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suspend the cell cycle

The correct sequence of phases in cell cycle is:

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$G_{1} \to S \to G_{2} \to M$
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$M \to G_{1} \to G_{2} \to S$
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$G_{1} \to G_{2} \to S \to M$
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$S \to G_{1} \to G_{2} \to M$

After meiosis I, the resultant daughter cells have

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same amount of DNA as in the parent cell in S
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twice the amount of DNA in comparison to haploid
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same amount of DNA in comparison to haploid gamete
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four times the amount of DNA in comparison to haploid gamete

Crossing over takes place between which chromatids and in which stage of the cell cycle?

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Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I.
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Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I.
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Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I.
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Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I.

Which of the following is the correct sequence of events of interphase:-

a. cells metabolically active

b. Duplication of the chromosome but chromosome number remains constant

c. M phased

d. Synthesis of protein [Tubulin]

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$a \to b \to c \to d$
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$a \to d \to b \to c$
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$a \to b \to d \to c$
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$a \to c \to d \to b$

Which of the following is characteristic of prophase I of meiosis I:-

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Synapsis in zygotene, genetically different chromatid are seen in pachytene
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Exchange of genes in leptotene, genetically similar chromatids are seen in zygotene.
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Chiasmata are present in metaphase
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Splitting of centromere in anaphase-I

Bivalent align on the equator during

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Metaphase I of meiosis
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Anaphase I of meiosis
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Metaphase of mitosis
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Anaphase of mitosis

The figurees below shows 3 phases of mitosis select the option given correct identification together with the correct event ?

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C- Telophase-Nuclear envelope assembles around the chromosome clusters
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B- Anaphase-Segregation of homologous chromosomes.
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A- Prophase-Chromosomes get fully condensed.
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C- Metaphase-Condensation of chromatin to form chromosome

Identify the symbols A, B, and C in the figure given below

A B C

1. $G_{0}$ Prophase Cytokinesis

2. Prophase Metaphase Telophase

3. $G_{1}$ S $G_{2}$

4. Cytokinesis Prophase $G_{0}$

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1
0%

2
0%

3
0%

4

Some dividing cells exit the cell cycle and enter the vegetative inactive stage. This is called the quiescent stage $(G_{0})$ . This process occurs at the end of:

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M phase
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$G_{1} p h a s e$
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S phase
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$G_{2} p h a s e$

Identify the correct statement with regard to $G_{1}$ phase (Gap 1) of interphase.

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The reorganisation of all cell components takes place.
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The cell is metabolically active, grow but does not replicate its DNA
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Nuclear Division takes place
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DNA synthesis or replication takes place.

Dissolution of the synaptonemal complex occurs during :

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Zygote
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Diplotene
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Leptotene
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Pachytene

Match the following with respect to meiosis:

a. Zygotene i. Terminalization

b. Pachytene ii. Chiasmata

c. Diplotene iii. Crossing over

d. Diakinesis iv. Synapsis

Select the correct option from the following:

(a) (b) (c) (d)

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iv iii ii i
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i ii iv iii
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ii iv iii i
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iii iv i ii

Does Tubulin protein synthesis take place in which of the given stages of interphase?

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G₁
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G₀
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S
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G₂

Reduction in the number of chromosomes occurs during

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Diplotene
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Diakinesis
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Metaphase I
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Anaphase I

Attachment of spindle fibers to kinetochores of chromosomes becomes evident in :

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Anaphase
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Telophase
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Prophase
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Metaphase

During Meiosis 1, in which stage synapsis takes place?

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Pachytene
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Zygotene
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Diplotene
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Leptotene

Match the following events that occur in their respective phases of cell cycle and select the correct option :

(a) G 1 phase (i) Cell grows and organelle duplication

(b) S phase (ii) DNA replication and chromosome duplication

(d) Metaphase in M-phase (iv) Alignment of chromosomes

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(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
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(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
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(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
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(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)

Which of the following stages of meiosis involves division of centromere?

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Anaphase II
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Telophase II
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Metaphase I
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Metaphase II

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Practice Botany Quiz Questions and Answers

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Practice Botany Quiz Questions and Answers

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