Oogenesis MCQs

(1)The onset of Oogenesis occurs during…….

  1. Puberty
  2. birth
  3. adulthood
  4. embryonic development

Ans: d

(2) What is the process of formation of a mature female gamete called? 

  • Menstruation
  • Spermatogenesis
  • Oogenesis
  • Ovulation

Ans: c

(3) what is the stage of the cell cycle at which primary oocytes are arrested?

  1. Prophase I
  2. Metaphase l
  3. Prophase ll
  4. Metaphase ll

Ans: a

(4) A person with tetraploidy will have……. Set of chromosomes in their first polar body.

     a) haploid

     b) triploid

     C) diploid

     d) polyploid

Ans: c

(5) if a female is born with 6 million primary oocytes in each ovary, the maximum number of eggs that she can produce in her lifetime is 6 million

  1. True
  2. False

Ans: a

(6)The division of primary oocyte into the secondary oocyte and first polar body is an example of…….

  1. Symmetric division
  2. asymmetric division
  3. Cell death
  4. asexual reproduction

Ans: b

(7) what are the cells that primary oocyte divide into called?

  1. Secondary oocyte and first polar body
  2. Secondary oocyte and second polar body
  3. First polar body and second polar body
  4. Ovum and second polar body

Ans: a

(8)The secondary oocyte has 46 chromatids, while the ovum has only 23 chromatids.

  1. True
  2. False

Ans :a

(9) what stage is the oocyte released from the ovary?

  1. Primary oocyte
  2. Secondary oocyte
  3. Tertiary oocyte
  4. Ovum

Ans: b

(10) The membrane surrounding the oocyte is……….

  1. Theca interna
  2. Granulosa
  3. Zona pellucida
  4. Theca externa

Ans : c

(11) Extrusion of second polar body from egg occurs

  1. Simultaneously with first cleavage
  2. after firtilization
  3. before entry of sperm into Ovum
  4. after entry of sperm but before fertilization

Ans :b

(12) In human females, meiosis – ll is not completed until

  1. Uterine implantation
  2. Birth
  3. Fertilization
  4. Puberty

Ans: c

(13) which of the following layers in an antral follicle is a cellular?

  • Stroma
  • Zona pellucida
  • Granulosa
  • Theca interna

Ans: b

(14) The main function of mammalian corpus luteum is to produce

  • estrogen only
  • Progesterone
  • human chorionic gonadotropin
  • relaxin only

Ans: b

(15) withdrawal of which of the following hormones is the immediate cause of Menstruation?

  • Progesterone
  • FSH
  • Estrogen
  • FSH-RH

Ans: a

(16)  which part of ovary In mammals acts as an endocrine gland after Ovulation?

  • Stroma
  • Germinal epithelium
  • Vitelline mambrane
  • Graafian follicle

Ans: d

(17) The mammalian corpus luteum produces

  • luteotrophic hormone
  • luteinizing hormone
  • estrogen
  • Progesterone

Ans : d

(18) Egg is liberated from ovary in

  • Secondary oocyte stage
  • Primary oocyte stage
  • Oogonial stage
  • mature Ovum stage

Ans:  a

(19) Freshly released human egg has

  • One Y-chromosome
  • One X-chromosome
  • Two X-chromosome
  • One X-chromosome and one Y-chromosome

Ans: b

(20) process of Spermatogenesis and Oogenesis are under the influence of which hormone?

  • Oxytocin
  • Progesterone
  • FSH
  • LH

Ans: c

 (21) primary egg mambrane of mammalian egg is called as

  •  Zona pellucida
  • Corona Radiata
  • Chorion
  • Vitelline mambrane

Ans : a

(22) stored food material for oocyte is

  • nucleus
  • Yolk sac
  • Cortical granule
  • Cytoplasm

Ans : b

(23) second polar body is produced during formation of

  • Sperm
  • Secondary spermatocytes
  • Oogonium
  • Secondary oocyte

Ans : d

(24) During Oogenesis in human, first break occur at

  • Prophase I
  • Metaphase ll
  • Prophase ll
  • Metaphase ll

Ans: a

(25) cleidoic eggs are found In

  • Birds
  • Reptiles
  • Insects
  • All above

Ans:d

(26) Isolecithal eggs are found in

  • Birds
  • Frogs
  • Humans
  • Insects

Ans :c

(27)cytokinesis is a process

  • qualitative
  • quantitative
  • temporary
  • none

Ans:a