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) |
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The above graph shows the change in DNA content during various phases (A to (d) in a typical mitotic cell cycle. Identify the phases:

 

A

B

C

D

(1)

G2

G1

S

M

(2)

G

S

G2

M

(3)

G1

S

G2

M

(4)

M

G1

S

G2

Subtopic:  Intro to Cell Cycle & Interphase |
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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) |
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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 |
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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 |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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Chromosome number is reduced during meiosis because the process consists of:

(1) Two cell divisions without any chromosome replication

(2) A single cell division without any chromosome replication

(3) Two cell divisions in which half of the chromosomes are destroyed

(4) Two cell divisions and only a single round of chromosome replication

Subtopic:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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Which of the following is false?
(1) The mitotic spindle is composed of microtubules

(2) In plant cells, cytokinesis is accomplished by the formation of a cell plate

(3) The distribution of mitochondria between the daughter cells during cytokinesis is random

(4) Chromatin condenses to form discrete, visible chromosomes early in G1

Subtopic:  Intro to Cell Cycle & Interphase |
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A reduction step during meiosis is important because:

(1) It returns the chromosome number to normal before fertilization

(2) There is a mechanism for this

(3) Only one copy of each chromosome is necessary

(4) Otherwise chromosome copies would double each fertilization

Subtopic:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
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Which of the following statements about meiosis is false?
(1) Haploid cells cannot divide meiotically

(2) DNA replication does not occur during interkinesis

(3) Assortment of homologous chromosomes on the equatorial plate during metaphase I is independent

(4) Of the four cells produced by meiosis, none are genetically identical to the parent cells but two are identical to each other

Subtopic:  Cell Cycle: Meiosis I |
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D, E, F and G are the four daughter cells resulting when cell A undergoes meiosis as shown in the following diagram. If no crossing over has occurred which cells listed below, if any, are genetically identical?

(1) Cells B and C                               

(2) No two cells

(3) Cells D and E, cells F and G         

(4) Cells D, and F, Cell E and G

Subtopic:  Cell Cycle: Meiosis I |
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