In prophase mitosis, which one of the following events occurs in animal cells but not in plant cells?

(1) Centrioles migrate to opposite sides of the nucleus

(2) Homologous chromosomes do not associate

(3) The nuclear envelope (membrane) breaks down

(4) Nucleoli disappear

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 80%
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Synaptonemal complex is more conspicious at:

(1) Zygotene        

(2) Pachytene      

(3) Diplotene         

(4) Leptotene

Subtopic:  Cell Cycle: Meiosis I |
 57%
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Centrosomes are:

(1) Constricted regions of chromosomes

(2) Regions where microtubules polymerise

(3) Part of Cilia

(4) The central part of the same cell

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 52%
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Cellular structures which disappear during late prophase and reappear during telophase are:

(1) Mitochondria and spindle fibres   

(2) Plasma membrane

(3) Nuclear membrane and nucleolus 

(4) Plastid

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 91%
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Given:
1. Chromatid                                    2. Monad
3. Dyad                                            4. Daughter chromosome
The correct sequence in cell division is:
(a) 1, 2, 3, 4               (b) 2, 3, 1, 4              (c) 3, 2, 1, 4              (d) 4, 3, 2, 1

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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Cytokinesis in animal cell takes place by _______; in _______ direction while in plant cell by _______; in _______ direction:

(1) Furrowing, centrifugal, cell plate, centripetal

(2) Furrowing, centripetal, cell plate, Centrifugal

(3) Cell plate, centrifugal, furrowing, centripetal

(4) Cell plate, centripetal, furrowing, centrifugal

Subtopic:  Cell Division: Mitosis (Cytokinesis) |
 78%
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Liquid endosperm in coconut is resulted due to:

(1) Karyokinesis followed by cytokinesis

(2) Failure of karyokinesis followed by cytokinesis

(3) Karyokinesis twice followed by single cytokinesis

(4) Karyokinesis is not followed by cytokinesis

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 77%
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Label the structure indicated by lines (i), (ii), (iii) and (iv):

(1) (i) - Chromatid, (ii) Centriole, (iii) Centromere, (iv) Chromosome

(2) (i) - Chromomosome, (ii) Centriole, (iii) Centromere, (iv) Chromatid

(3) (i) - Chromatid, (ii) Centromere, (iii) Centriole, (iv) Chromosome

(4) (i) - Chromomosome, (ii) Centromere, (iii) Centriole, (iv) Chromatid

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 74%
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The members of a homologous pair of chromosomes:

(1) Are identical in size and appearance

(2) Contain identical genetic information

(3) Separate to opposite poles of the cell during mitosis

(4) Are found only in haploid cells

Subtopic:  Cell Cycle: Meiosis I |
 57%
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One difference between mitosis and meiosis I is that:

(1) Homologous chromosome pairs synapse during mitosis

(2) Chromosome do not replicate in the interphase preceding meiosis

(3) Homologous chromosomes pairs synapse during meiosis but not mitosis

(4) Spindle composed of microtubules are not required during meiosis

Subtopic:  Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
 85%
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