Tag: fertilization in human being

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Multiple choice biology reproduction in animals fertilization in human being fertilization in humans human fertilization

If an organism is a diploid (or 2n) with 16 chromosomes, then how many chromosomes its sperm cells or egg cells will contain?

  1. 8

  2. 16

  3. 32

  4. 64
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An organism consists of two types of cells in their body, somatic cells and germs cells/ gametes. During the process of meiosis, a diploid number of chromosome is cut down to haploid. This division is an important event since after fertilisation haploid chromosomes from each gamete (male and female) fuse to retain the diploid state in the zygote. Diploid means two sets of chromosome and haploid is one set. Since here the diploid set is 16 thus one set will be half it, i.e, 8. Thus the answer A is correct.

Multiple choice biology reproduction in animals fertilization in human being fertilization in humans human fertilization

A zygote is a/ an

  1. Implanted fertilized egg

  2. Fertilized egg

  3. Ovulated egg

  4. Blastocyst
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • A zygote is formed by the fusion of a male and a female gamete. In this process, the sperm ruptures the cell wall of the ovum and releases the nucleic acid (chromosome). Thereby forming a diploid zygote. This fusion takes place during the process of fertilisation. 
  • Implanted fertilised egg is the mature form of the zygote.
  • Ovulated egg is a unfertilized egg.
  • A blastocyst is also a mature state of a zygote. So, the correct answer is option B.

Multiple choice biology reproduction in animals fertilization in human being fertilization in humans human fertilization

The process of fertilization in human beings is

  1. Fusion of the male and the female gamete

  2. Seperation of male and the female gamete

  3. Both A and B

  4. Foetus formation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fertilization in humans is the fusion of female gamete and a male gamete in the ampulla of the oviduct. The result is the production of a zygote or fertilized egg.
Thus, the correct answer is option A.

Multiple choice biology reproduction in animals fertilization in human being fertilization in humans human fertilization

The life span of an unfertilized egg is

  1. Two days

  2. One hour

  3. One day

  4. One week
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Every month, the egg is released from the ovary and moves into the fallopian tube for fertilization and if the egg is not fertilized during that time, it disintegrates. The life span of that unfertilized egg is 24 hours or one day after it has left the ovary. So, the correct answer is option C.

Multiple choice biology reproduction in animals fertilization in human being fertilization in humans human fertilization

Mature mammalian follicle is known as

  1. Graffian follicle

  2. Ovarian follicle

  3. Corpus luteum

  4. Corpus albicans
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The female mammals are characterized by cyclic changes in reproductive tract and ovaries, regulated by some hormones like FSH and LH. Every month, one ovarian follicle matures, ruptures and releases its ovum into the peritoneal cavity and this ovarian follicle is called as Graffian follicle. Therefore, the term Graffian follicle is used for a mature follicle in the mammalian ovary.

So, the correct answer is option A.

Multiple choice biology reproduction in animals fertilization in human being fertilization in humans human fertilization

The region of female reproductive tract where fertilization occurs is

  1. Vagina

  2. Uterus

  3. Cervix

  4. Fallopian tube
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The egg released from the mature Graafian follicle enters the fallopian tube through the ostium. The egg waits in the ampulla region of the fallopian tube for the sperm. The process of fertilisation is te fusion of the male and the female gametes which take place in the fallopian tube.

Thus, the correct answer is option D. 

Multiple choice biology reproduction in animals fertilization in human being fertilization in humans human fertilization

Fertilisation means

  1. The shedding of gametes from a reproductive organ

  2. Adhesion of male and female reproduction organs

  3. Fusion of nuclei of male and female gametes

  4. Transfer of male gamete to female gamete
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • Fusion of male and female gamete is a key step in reproduction. This is known as fertilization.
  • Fertilization results in zygote which later develops into embryo.
So, the correct option is 'Fusion of nuclei of male and female gametes'.

Multiple choice biology reproduction in animals fertilization in human being fertilization in humans human fertilization

Fertilization means

  1. Fusion of male and female nuclei

  2. Fusion of two female nuclei

  3. Interaction of male and female reproductive organs

  4. Fusion of two male nuclei
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fertilization is the process in which haploid male and haploid female gamete fuse together to form a diploid zygote. This process is also known as syngamy. In this process, the nucleus of the male gamete fuses with the nucleus of the female gamete to promote the fusion of their genetic material. So, the correct option is A.