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

1.  Prophase II during meiosis

2.  Prophase of mitosis

3.  Both prophase and metaphase of mitosis

4.  Prophase I during meiosis

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4
Correct Answer :

Prophase I during meiosis


Explanation :
No Explanation available for this question

In current canal communicates with radial canals by:

1.  Apopyles

2.  Prosopyle

3.  Dermal ostia

4.  Gastric ostia

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4
Correct Answer :

Prosopyle


Explanation :
No Explanation available for this question

The correct sequence of different phases of cell cycle is:

1.  S-G1-G2-M

2.  G1- S- G2- M

3.  G2 – S- G1- M

4.  G1- G2- S- M

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4
Correct Answer :

G1- S- G2- M


Explanation :
No Explanation available for this question

Find the correctly matched pairs and choose the correct option a. Leptotene – The chromosomes become invisible b. Zygotene – Pairing of homologous chromosomes c. Pachytene – Dissolution of synaptonemal complex takes place d. Diakinesis – Bivalent chromosomes appear as tetrads Diakinesis – Terminalization of chiasmata takes place

1.  a and b are correct

2.  b and d are correct

3.  b and e are correct

4.  c and d are correct

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4
Correct Answer :

b and e are correct


Explanation :
No Explanation available for this question

Which of the following events are not characteristic features of telophase Chromosome material condenses to form compact mitotic chromosomes Nucleolus, Golgi complex and ER reform Nuclear envelope assembles around the chromosome clusters Centromeres split and chromatides separate Chromosomes cluster at opposite, spindle poles and their identity as discrete elements is lost

1.  a, b and d only

2.  a and d only

3.  b and c only

4.  b and c only

5.  c, d and e only

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5
Correct Answer :

a and d only


Explanation :
No Explanation available for this question

A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics

1.  Late anaphase - chromosomes move away from equatiorial Plate, golgi complex not present

2.  cytokinesis - cell plate formed, mitochondria distributed between

3.  Telophase - endoplasmic reticulum and nucleolus not reformed yet

4.  Telophase - Nuclear envelop reforms, golgicom

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4
Correct Answer :

Telophase - Nuclear envelop reforms, golgicom


Explanation :
No Explanation available for this question

The complex formed by a pair of synapsed homologous chromosomes is called

1.  Kinetochore

2.  Bivalent

3.  Axoneme

4.  Equatorial plate

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4
Correct Answer :

Bivalent


Explanation :
No Explanation available for this question

Meiosis takes place in:

1.  Gemmules

2.  Megaspores

3.  Meiocyte

4.  Conidia

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4
Correct Answer :

Meiocyte


Explanation :
No Explanation available for this question

A common characteristic feature of plant sieve tube cells and most of mammalian crythrocytes is:

1.  Absence of mitochondria

2.  Presence of cell wall

3.  Absence of nucleus

4.  Presence of haemoglobin

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4
Correct Answer :

Absence of mitochondria


Explanation :
No Explanation available for this question

Select one which is not true for ribosome

1.  Comprised of two sub units

2.  Form polysome

3.  May attach to m RNA

4.  Have no role in protein synthesis

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4
Correct Answer :

Have no role in protein synthesis


Explanation :
No Explanation available for this question
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