Match the stages of meiosis of Column-I to their characteristic features in Column-II and select the correct option using the codes given below: Column-I Column–II a. Pachytene (i) The pairing of homologous chromosomes b. Metaphase I (ii) Terminalization of chiasmata c. Diakinesis (iii) Crossing-over takes place d. Zygotene (iv) Chromosomes align at the equatorial plate

NEET UG 2016 — Botany Cell Cycle and Cell Division

2016mcqeasy

Match the stages of meiosis of Column-I to their characteristic features in Column-II and select the correct option using the codes given below:

Column-I		Column–II
a.	Pachytene	(i)	The pairing of homologous chromosomes
b.	Metaphase I	(ii)	Terminalization of chiasmata
c.	Diakinesis	(iii)	Crossing-over takes place
d.	Zygotene	(iv)	Chromosomes align at the equatorial plate

Official previous-year question

Held on 30 Apr 2016 · Verified 9 Jul 2026.

Options

A
$\begin{array}{|l|l|l|l|} \hline a & b & c & d \\ \hline \text { (iii) } & \text { (iv) } & \text { (ii) } & \text { (i) } \\ \hline \end{array}$
B
$\begin{array}{|l|l|l|l|} \hline a & b & c & d \\ \hline \text { (i) } & \text { (iv) } & \text { (ii) } & \text { (iii) } \\ \hline \end{array}$
C
$\begin{array}{|l|l|l|l|} \hline a & b & c & d \\ \hline \text { (ii) } & \text { (iv) } & \text { (iii) } & \text { (i) } \\ \hline \end{array}$
D
$\begin{array}{|l|l|l|l|} \hline a & b & c & d \\ \hline \text { (iv) } & \text { (iii) } & \text { (ii) } & \text { (i) } \\ \hline \end{array}$

Did you get this right?

Solution

Zygotene:

Chromosomes start pairing together. This process is called synapsis. The paired chromosomes are called homologous chromosomes.

The formation of synapsis is accompanied by the formation of the synaptonemal complex.

The synaptonemal complex by a pair of homologous chromosomes is called a bivalent or a tetrad.

Pachytene:

Bivalent chromosomes clearly appear as tetrads, at this stage.

Recombination nodules appear. These nodules are the sites at which crossing overtakes place between non-sister chromatids of the homologous chromosomes.

The exchange of genetic materials between two homologous chromosomes takes place during crossing over. This leads to the recombination of genetic materials on the two chromosomes.

Diakinesis:

Chiasmata is terminated at this stage.

Meiotic spindles are formed to prepare the homologous chromosomes for separation.

The nucleolus disappears and the nuclear envelope breaks down by the end of diakinesis.

Metaphase I:

The bivalent chromosomes are aligned on the equatorial plate.

Spindle fibres from opposite poles attach to the pair of homologous chromosomes.

Your note

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Options

$\begin{array}{|l|l|l|l|} \hline a & b & c & d \\ \hline \text { (iii) } & \text { (iv) } & \text { (ii) } & \text { (i) } \\ \hline \end{array}$

$\begin{array}{|l|l|l|l|} \hline a & b & c & d \\ \hline \text { (i) } & \text { (iv) } & \text { (ii) } & \text { (iii) } \\ \hline \end{array}$

$\begin{array}{|l|l|l|l|} \hline a & b & c & d \\ \hline \text { (ii) } & \text { (iv) } & \text { (iii) } & \text { (i) } \\ \hline \end{array}$

$\begin{array}{|l|l|l|l|} \hline a & b & c & d \\ \hline \text { (iv) } & \text { (iii) } & \text { (ii) } & \text { (i) } \\ \hline \end{array}$

Solution

Zygotene:

Chromosomes start pairing together. This process is called synapsis. The paired chromosomes are called homologous chromosomes.

The formation of synapsis is accompanied by the formation of the synaptonemal complex.

The synaptonemal complex by a pair of homologous chromosomes is called a bivalent or a tetrad.

Pachytene:

Bivalent chromosomes clearly appear as tetrads, at this stage.

Recombination nodules appear. These nodules are the sites at which crossing overtakes place between non-sister chromatids of the homologous chromosomes.

The exchange of genetic materials between two homologous chromosomes takes place during crossing over. This leads to the recombination of genetic materials on the two chromosomes.

Diakinesis:

Chiasmata is terminated at this stage.

Meiotic spindles are formed to prepare the homologous chromosomes for separation.

The nucleolus disappears and the nuclear envelope breaks down by the end of diakinesis.

Metaphase I:

The bivalent chromosomes are aligned on the equatorial plate.

Spindle fibres from opposite poles attach to the pair of homologous chromosomes.

NEET UG 2016 — Botany Cell Cycle and Cell Division

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Did you get this right?

Solution

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NEET UG 2016 — Botany Cell Cycle and Cell Division

Options

Did you get this right?

Solution

Your note

NEET UG Cell Cycle and Cell Division in other years

More NEET UG Cell Cycle and Cell Division questions

Other Botany topics for NEET UG

Morphology of Flowering Plants

Sexual Reproduction in Flowering Plants

Cell - The Unit of Life

Animal Kingdom

Biological Classification

Plant Kingdom

Keep practicing Cell Cycle and Cell Division