A. Most dramatic period of cell cycle involving a major reorganization of virtually all components of the cell
B. It represents the phase when the actual cell division occurs
These statements (A & B) are concerned with
1. S-phase
2. G1 phase
3. M-phase
4. G2 phase

Subtopic:  Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
 89%
From NCERT
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Select the correct statement

(1) Chromosomes decondense and lose their individuality during anaphase

(2) Spindle fibres attach to kinetochores of chromosomes during early prophase

(3) Centriole begins to move towards opposite poles of the cell during metaphase

(4) DNA is replicated during S-phase of cell cycle

Subtopic:  Intro to Cell Cycle & Interphase |
 88%
From NCERT
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Interkinesis stage of cell cycle

(1) Is generally short lived 

(2) Shows DNA duplication

(3) Is generally long lived

(4) Is followed by prophase-I

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 78%
From NCERT
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Select the incorrect statement

(1) Yeast can progress through the cell cycle in about 90 minutes

(2) DNA synthesis is a continuous process in cell cycle

(3) Duration of I-phase in the cell cycle is more than 95%

(4) Events of cell cycle are under genetic control

Subtopic:  Intro to Cell Cycle & Interphase |
 81%
From NCERT
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Cells that do not divide further exit G1 phase to enter an inactive stage called

(1) G2 phase                 

(2) G0 stage

(3) S-phase                  

(4) M-phase

Subtopic:  Intro to Cell Cycle & Interphase |
 96%
From NCERT
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Select the odd one out with respect to mitosis

(1) It helps the organisms in both sexual and asexual reproduction

(2) It is called equational division

(3) It takes place only in diploid cells of plants

(4) It helps in cell repair

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 67%
From NCERT
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Select the mis-matched pair

(1) Leptotene – Compaction of chromosomes  continued

(2) Zygotene – Appearance of recombination nodules

(3) Diplotene – beginning of dissolution of synaptonemal complex

(4) Diakinesis – Completgeterminalisation of chiasmata

Subtopic:  Cell Cycle: Meiosis I |
 80%
From NCERT
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Microtubules from opposite poles of the spindle attach to the pairs of homologous chromosomes during

(1) Pachytene               

(2) Metaphase – I

(3) Metaphase – II         

(4) Early prophase

Subtopic:  Cell Cycle: Meiosis I |
 81%
From NCERT
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Exchange of genetic material between two homologous chromosomes occurs in

(1) Leptotene                

(2) Diakinesis

(3) Pachytene               

(4) Diplotene

Subtopic:  Cell Cycle: Meiosis I |
 91%
From NCERT
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How many meiotic divisions are required to produce 50 wheat grains?

(1) 100                         

(2) 200

(3) 25                           

(4) 63

 

Subtopic:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
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