NEET · Biology · STD 11 - 10. Cell cycle and cell division

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

A Cytokinesis \(⇒\) Cell plate formed,mitochondria distributed between two daughter cells.
B Telophase \(⇒\) Endoplasmic reticulumand nucleolus not reformed yet.
C Telophase \(⇒\) Nuclear envelopereforms,Golgi complex reforms.
D Late anaphase \(⇒\) Chromosomes moveaway from equatorial plate, Golgi complex not present.

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Answer & Solution

Correct Answer

(C) Telophase \(⇒\) Nuclear envelopereforms,Golgi complex reforms.

Step-by-step Solution

Detailed explanation

(c) : The figure given in the question shows a stage of mitotic cell division called as telophase stage. The individual chromosomes are no longer seen and chromatin material tends to collect in a mass at the two poles. This is the stage which shows the following key events:
-Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements.
-Nuclear envelope assembles around the chromosome clusters.
-Nucleolus, Golgi complex and \(ER\) reform.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Which of the following represents the correct combination without any exception ?

Option	Characteristics	Class
\((a)\)	Sucking and circular mouth; jaws absent, integument without scales; paired appendages.	Cyclostomata
\((b)\)	Body covered with feathers; skin moist and glandular, fore-lims form wings; lungs with air sacs.	Aves
\((c)\)	Mammary gland; hair on body; pinnae; two pairs of limbs.	Mammalia
\((d)\)	Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord.	Chondrichthyes

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List\(-I\)	List \(- II\)
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\((c)\) Intra Uterine Device	\((iii)\) Absence of Menstrual cycle and ovulation following parturition
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Choose the correct answer from the options given below:

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