Process of Oogenesis

Q. Identify A, B, C and D in the schematic representation of oogenesis.

1. A-Mitosis and differentiation, B-Meiosis I and II, C-Second polar body, D-First polar body
2. A-Mitosis, B-Meiosis II, C-Ovum, D-First Polar Body
3. A-Mitosis and differentiation, B-Meiosis I, C-First polar body, D-second polar body
4. A-Meiosis I, B-Meiosis II, C- First polar body, D- Second polar body

Q.

What are ovarian follicles?

Q.

Movement of the chromosomes towards the equator of the cell is called:

1. Prometaphase

2. Metakinesis

3. Karyokinesis

4. Cytokinesis

Q.

How many eggs are present in a follicle?

Q. Read the given statements regarding the contribution of sperm and egg to the zygote and select the correct option.

Statement 1: A defect in the mitochondrial DNA of the sperm middle piece will be transmitted to the developing zygote
Statement 2: Sperm contributes to most of the mitochondria in the zygote
Statement 3: Egg contributes to most of the cytoplasm
Statement 4: Both sperm and egg contribute haploid nucleus

Q. Extrusion of second polar body from egg occurs

1. simultaneously with first cleavage
2. after entry of sperm but before fertilization
3. after fertilization
4. before entry of sperm into ovum

Q. Primary oocyte covered by a layer of granulosa cell is called .

1. oogonia
2. primary follicle
3. Graafian follicle
4. ovum

Q.

Match the Columns

Column 1	Column 2
Acrosome	Chromosome
Ovulation	Haploid cells
Ova	Spermatozoa
Deoxyribonucleic acid(DNA)	Luteinizing Hormone

Q.

Explain recombination nodules?

Q. In oogenesis haploid egg is fertilised by sperm at which stage?

1. Primary oocyte
2. Secondary oocyte
3. Oogonium
4. None of the above
   

Q. Is androgen proteinaceous in nature

Q. Primordial ovum enters meiotic division and gets arrested during stage.

1. prophase- I
2. metaphase - I
3. anaphase - I
4. telophase - I

Q. explain the process of formation of megasporangium (ovule).

Q. In Plasmodium, the diploid stage is

1. Oocyst
2. Gamont
3. Schizont
4. Sporozoite

Q.

In which phase do the primary oocytes get arrested during early foetal development?

1. Metaphase of Meiosis I

2. Metaphase of Meiosis II

3. Prophase of Meiosis I

4. Prophase of Meiosis II