Select the correct sequence for transport of sperm cells in male reproductive system. → Urethra → Urethral meatus Ejaculatory duct → Urethra → Urethral meatus

Seminiferous tubules → Rete testis → Vesa efferentia → Epididymus → Vas deferens →

Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal

Testis → Epididymis → Vasa efferentia → Rete testis → Inguinal canal → Urethra

Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra

Zoology - Human Reproduction - Quiz-9

Which of the structures shown in the following diagram contributes the source of nutrition for the sperms ejaculated in the semen?

0%
A
0%
B
0%
C
0%
D

Grey crescent is the area -

0%

At the point of entry of sperm into ovum
0%

Just opposite to the site of entry of sperm into ovum
0%

At the animal pole
0%

At the vegetal pole

If mammalian ovum fails to get fertilized, which one of the following is unlikely -

0%

Estrogen secretion further decreases
0%

Progesterone secretion rapidly declines
0%

Corpus luteum will disintegrate
0%

Primary follicle starts developing

Menstrual bleeding is the result of

0%

low levels of ovarian hormones
0%
high levels of ovarian hormones
0%
high levels of LH
0%
high levels of FSH

In oogenesis, when a diploid cell undergoes meiosis, how many ova result?

0%

1
0%

2
0%

3
0%

4

Identify the incorrectly matched pair:

1.	Ovulation	LH surge
2.	Follicular phase of menstrual cycle	Regeneration of endometrium
3.	Luteal phase	Secretion of FSH
4.	Menstruation	Withdrawal of progesterone

0%
1
0%
2
0%
3
0%
4

Fructose is contributed to the semen by the secretions of:

0%

Seminal vesicles
0%

Prostate
0%

Bulbourethral glands
0%

Testes

Hormones secreted by the placenta to maintain pregnancy are

0%

hCG, hPL, progesterone, prolactin
0%
hCG, hPL, estrogens, relaxin, oxytocin
0%
hCG, hPL, progesterone, estrogens
0%
hCG, progesterone, estrogens, glucocorticoids

The difference between spermiogenesis and spermiation is

0%

In spermiogenesis, spermatids are formed, while in spermiation spermatozoa are formed.
0%
In spermiogenesis, spermatozoa are formed, while in spermiation spermatids are formed.
0%
In spermiogenesis, spermatozoa from Sertoli cells are released into the cavity of seminiferous tubules, while in spermiation, spermatozoa are formed.
0%
In spermiogenesis, spermatozoa are formed, while in spermiation, spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.

The amnion of mammalian embryo is derived from

0%

ectoderm and mesoderm
0%
endoderm and mesoderm
0%
mesoderm and trophoblast
0%
ectoderm and endoderm

Question 174

Match the items given in Column I with those in Column II and select the correct option given below:-
Column I Column II
a. Proliferative Phase i. Breakdown of endometrial lining
b. Secretory Phase ii. Follicular Phase
c. Menstruation iii. Luteal Phase

0%

a-iii b-ii c-i
0%
a-i b-iii c-ii
0%
a-ii b-iii c-i
0%
a-iii b-i c-ii

Match column I with column II and select the correct option using the codes given below

0%

A-2 B-4 C-3 D-1
0%
A-3 B-4 C-1 D-2
0%
A-3 B-1 C-4 D-2
0%
A-1 B-4 C-3 D-2

Changes in GnRH pulse frequency in females is controlled by circulating levels of

0%

estrogen and inhibin
0%
progesterone only
0%
progesterone and inhibin
0%
estrogen and progesterone

Capacitation refers to changes in the

0%

sperm before fertilization
0%
ovum before fertilization
0%
ovum after fertilization
0%
sperm after fertilization

Which of these is not an important component of initiation of parturition in humans?

0%

Increase in oestrogen and progesterone ratio
0%
Synthesis of prostaglandins
0%
Release of oxytocin
0%
Release of prolactin

Seminal plasma in human males is rich in

0%

fructose and calcium
0%

glucose and calcium
0%

DNA and testosterone
0%

ribose and potassium

Identify the incorrect statement regarding female reproductive system?

0%

The first meiotic division of a primary oocyte forms two secondary oocytes that remain in this stage unless fertilization occurs.
0%

Uterine tube, fallopian tube, and oviduct are terms used to refer to the same organ.
0%

Menopause marks the termination of both menstruation and ovulation.
0%

An ectopic pregnancy is an implantation of the blastocyst in a site other than the uterus.

Seminal plasma in humans is rich in

0%

fructose, calcium and certain enzymes
0%

fructose and calcium but has no enzymes
0%

glucose and certain enzymes but has no calcium
0%

fructose and certain enzymes but poor in calcium

Which one of the following is the correct matching of the events occurring during menstrual cycle?

0%

Ovulation-LH and FSH attain peak level and sharp fall in the secretion of progesterone
0%

Proliferative phase-Rapid regeneration of myometrium and maturation of Graafian follicle
0%

Development of corpus luteum-Secretory phase and increased secretion of progesterone
0%

Menstruation-Breakdown of myometrium and ovum not fertilized

Which one of the following statement is incorrect about menstruation?

0%

During normal menstruation about 40 mL blood is lost
0%

The menstrual fluid can easily clot
0%

At menopause in the female, there is especially abrupt increase in gonadotropic hormones
0%

The beginning of the cycle of menstruation is called menarche

Extrusion of second polar body from egg nucleus occurs:

0%

simultaneously with first cleavage
0%

after entry of sperm but before fertilization
0%

after fertilization
0%

before entry of sprm into ovum

Select the correct sequence for transport of sperm cells in male reproductive system.

\to

$\to$ Urethra

\to

$\to$ Urethral meatus

Ejaculatory duct

\to

$\to$ Urethra

\to

$\to$ Urethral meatus

0%

Testis $\to$ $\to$ Epididymis $\to$ $\to$ Vasa efferentia $\to$ $\to$ Vas deferens $\to$ $\to$ Ejaculatory duct $\to$ $\to$ Inguinal canal
0%

Testis $\to$ $\to$ Epididymis $\to$ $\to$ Vasa efferentia $\to$ $\to$ Rete testis $\to$ $\to$ Inguinal canal $\to$ $\to$ Urethra
0%

Seminiferous tubules $\to$ $\to$ Rete testis $\to$ $\to$ Vesa efferentia $\to$ $\to$ Epididymus $\to$ $\to$ Vas deferens $\to$ $\to$
0%

Seminiferous tubules $\to$ $\to$ Vasa efferentia $\to$ $\to$ Epididymis $\to$ $\to$ Inguinal canal $\to$ $\to$ Urethra

The extra embryonic membranes of the mammalian embryo are derived from

0%

Trophoblast
0%

Inner cell mass
0%

Formative cells
0%

Follicle cells

In the 28 day human ovarian cycle, the duration of luteal phase is approximate?

0%

14 days
0%

28 days
0%

30 days
0%

5 days

In the fertile human female, approximately on which day of the menstrual cycle (32 days) does ovulation take place?

0%

Day 18
0%

Day 14
0%

Day 1
0%

Day 8

Which of the following groups of hormones produced in women only during pregnancy ?

0%

hCG, hPL, relaxin
0%

Estrogen, progesterone, hCG
0%

Cortisol, prolactin, thyroxine
0%

Prolactin. progesterone, hCG

Which one of the following statements is incorrect about menstrual cycle ?

0%

The first menstruation begins at puberty and is called menarche
0%

Lack of menstruation may also occur due to some environmental factors like stress, poor health
0%

Corpus luteum secretes large amounts of progesterone which is essential for maintenance of endometrium
0%

In absence of fertilisation, corpus luteum degenerates in luteal phase and new follicles start developing immediately

Phase of menstrual cycle in human that lasts for 7-8 days is

0%

Follicular phase
0%

Ovulatory phase
0%

Luteal phase
0%

Menstruation

A change in ovum after penetration of sperm is

0%

Formation of first polar body
0%

Second meiosis starts
0%

First meiosis
0%

Formation of second polar body

What happens to the majority of the follicles during the phase from birth to puberty?

0%

They get invested by multiple layers of granulosa cells
0%

They enlarge in size and then get dormant
0%

They undergo atresia or degeneration
0%

They cluster together at one end of the ovary

0:0:1

Practice Zoology Quiz Questions and Answers

0:0:1

Practice Zoology Quiz Questions and Answers

Support mcqexams.com by disabling your adblocker.