Test: Gametogenesis And Menstrual Cycle

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This mock test of Test: Gametogenesis And Menstrual Cycle for NEET helps you for every NEET entrance exam. This contains 5 Multiple Choice Questions for NEET Test: Gametogenesis And Menstrual Cycle (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Gametogenesis And Menstrual Cycle quiz give you a good mix of easy questions and tough questions. NEET students definitely take this Test: Gametogenesis And Menstrual Cycle exercise for a better result in the exam. You can find other Test: Gametogenesis And Menstrual Cycle extra questions, long questions & short questions for NEET on EduRev as well by searching above.

QUESTION: 1

Spermatogenesis is promoted by:

A.
Estrogens
B.
Progesterone
C.
Testosterone
D.
Oxytocin

Solution:

As male attain puberty. Leydig cells surrounding seminiferous tubules start to secret testosterone harmone which initiate Spermatogenesis in Seminiferous tubules.

QUESTION: 2

Identify the wrong statement from the following.

A.
High level of estrogen triggers the ovulatory surge.
B.
Oogonial cells start to proliferate and give rise to functional ova in regular cycle puberty onwards.
C.
Sperms released from seminiferous tubules are poorly motile/non-motile.
D.
progesterone level is high during the post ovulatory phase of menstrual cycle.

Solution:

The process of formation of a mature female gamete is called oogenesis. Unlike sperm formation that starts at pubarty egg formation begins before birth. Primordial germ cells complete the proilferative stage or oogenesis in the early embryonal stage when million of gamete mother cells (oogonia) are formed within each faetal ovary, no more oogonia are formed and added after birth.

QUESTION: 3

The membranous cover of the ovum at ovulation is:

A.
Zona pellucida
B.
Zona radiata
C.
Corona radiata
D.
Chorion

Solution:

The ovum is enclosed by the inner thin, transparent, non-cellular coat zonapellucidaand outer thick coat corona radiata, During fertilization sperm first comes in contact with the corona radiata and zonapellucida to reach the plasma membrane of the egg(ovum).

QUESTION: 4

A human female reaches menopause around the age of:

A.
70 years
B.
50 years
C.
25 years
D.
15 years

Solution:

The age at which a woman starts having menstrual periods is also not related to the age of menopause onset. Most women reach menopause between the ages of 45 and 55, but menopause may occur as earlier as ages 30s or 40s, or may not occur until a woman reaches her 60s.

QUESTION: 5

Which among the following has 23 chromosomes?

A.
Zygote
B.
Spermatogonia
C.
Secondary oocyte
D.
Oogonia

Solution:

.Zygote: In humans, the male gamete is called sperm, and the female gamete is called an egg. When the gametes join they form a cell called a zygote. Human sperm and eggs contain 23 chromosomes. Human zygotes contain 46 chromosomes.

Spermatogonia: (46 chromosomes, 92 chromatids)

- Has a pair of each chromosome, and each individual chromosome has two chromatids.

- Undergoes mitosis (normal cell division) to produce a primary speratocyte.

Secondary oocyte: The secondary oocyte is the cell that is formed by meiosis I in oogenesis. Thus, it has only one of each pair of homologous chromosomes. In other words, it is haploid. However, each chromosome still has two chromatids, making a total of 46 chromatids (1N but 2C). The secondary oocyte continues the second stage of meiosis (meiosis II), and the daughter cells are one ootid and one polar body.

Secondary oocytes are the immature ovum shortly after ovulation, to fertilization, where it turns into an ootid. Thus, the time as a secondary oocyte is measured in days.

The secondary oocyte is the largest cell in the body, and in humans is just visible to the naked eye.

Oogonia: An oogonium (plural oogonia) is a small diploid cell which upon maturation forms a primordial follicle in a female fetus or the female (haploid or diploid) gametangium of certain thallophytes. Oogonia are the cells that turn into primary oocytes in oogenesis. They are diploid, i.e. containing pairs of homologous chromosomes. There are 23 chromosome pairs. Thus, there are 46 chromosomes