NEET Biology Mock Test

Q1)The Leydig cells as found in the human body are the secretory source of

Glucagon

Androgens

Progesterone

Intestinal mucus

Correct! Wrong!

Q2)) In normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was

High levels of FSH and LH in uterus to stimulate endometrial thickening

High level of circulating HCG to stimulate oestrogen and progesterone synthesis

High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo

High level of circulating HCG to stimulate endometrial thickening

Correct! Wrong!

Q3)Signals for parturition originate from

Placenta only

Fully developed foetus only

Both placenta as well as fully developed foetus

Oxytocin released from maternal pituitary

Correct! Wrong!

Q4)Which one of the following statements is false in respect of viability of mammalian sperm?

Viability of sperm is determined by its motility

Sperms must be concentrated in thick suspension

Sperm is viable for only up to 24 hours

Survival of sperm depends on the pH of the medium and is more active in alkaline medium

Correct! Wrong!

Q5)Which one of the following statements is correct?

FSH and LH occur in both males and females

FSH and LH stimulate the follicle to secrete estrogen.

The ovarian cycle depends on the blood levels of FSH and LH.

All of these are correct.

Correct! Wrong!

Q6)Foramen ovale

Is shallow depression in the interventricular septum

Is condition in which the heart valves do not completely close

Is connection between the pulmonary trunk and the aorta in the fetus

Connects the two atria in the fetal heart

Correct! Wrong!

Q7)Short-lived immunity acquired from mother to foetus across placenta or through mother's milk to the infant is categorized as:

Cellular immunity

Passive immunity

Active immunity

Innate non-specifi0immunity

Correct! Wrong!

Q8)The part of Fallopian tube closest to the ovary is

Infundibulum

Isthmus

Cervix

Correct! Wrong!

Q9)Which day in normal human menstrual cycle does rapid secretion of LH popularly called LH-surge occurs?

5th day

11th day

14th day

20th day

Correct! Wrong!

Q10)Ovulation in the human female normally takes place during the menstrual cycle

At the end of the proliferative phase

At the beginning of the proliferative phase

Just before the end of the secretory cycle

At the mid secretory phase

Correct! Wrong!

Q11)Which of the following structures are derivatives of the endoderm?

Skin and nerve cord

Alimentary canal and respiratory structures

Muscles and blood

Excretory and reproductive structures

Correct! Wrong!

Q12)Hormones and their functions are listed in the table below. Match the columns and select the correct option. Column I Column II W) Oxytocin p) Stimulates ovulation X) Prolactin q) Implantation and maintenance of pregnancy Y) Luteinizing r) Lactation after child hormone birth Z) Progesterone s) uterine contraction during labour t) Reabsorption of water by Nephrons

W--> s, X --> r, Y--> p, Z --> q

W--> t, X --> p, Y--> s, Z --> r

W--> s, X --> q, Y--> r, Z --> t

W--> t, X --> r, Y--> p, Z -->s

Correct! Wrong!

Q13)Which one of the following statements about morula in humans is correct?

It has more cytoplasm and more DNA than an uncleaved zygote

It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA

It has far less cytoplasm as well as less DNA than in an uncleaved zygote

It has more or less equal quantity of cytoplasm and DNA as in uncleaved zygote

Correct! Wrong!

Q14)Ectopic pregnancies are referred to as

Pregnancies terminated due to hormonal imbalance

Pregnancies with genetic abnormality.

Implantation of embryo at site other than uterus.

Implantation of defective embryo in the uterus

Correct! Wrong!

Q15)Correct sequence of embryo development:

Gamete → Zygote → Morula → Blastula → Gastrula

Gamete → Zygote → Blastula → Morula → Gastrula

Gamete → Neurula → Gastrula

Gamete → Neurula → Morula

Correct! Wrong!

Q16)At the time of implantation, the human embryo is called

Zygote

Blastocyst

Embryo

Foetus

Correct! Wrong!

Q17)Usually the first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?

Third month

Fourth month

Fifth month

Sixth month

Correct! Wrong!

Q18)Which of the following groups of cells in the male gonad, represent haploid cells?

Primary spermatocytes

Spermatogonial cells

Germinal epithelial cells

Secondary spermatocytes

Correct! Wrong!

Q19)Which one of the following statement is incorrect?

Scrotum regulates the temperature of the developing sperm within the testes.

Middle piece of a sperm contains many mitochondria to provide energy for movement.

Epididymis and ductus deferens also store sperm.

Sperm contributes cytoplasm and organelles to zygote

Correct! Wrong!

Q20)If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from

Vagina to uterus

Testes to epididymis

Epididymis to vas deferens

Ovary to uterus

Correct! Wrong!

Q21)Capacitation of sperm occurs in

Vagina

Female genital tract

Vas efferens

Vas deferens

Correct! Wrong!

Q22)Brain/CNS develops from

Ectoderm

Mesoderm

Endoderm

Ecto-endoderm

Correct! Wrong!

Q23)Antrum is cavity of

Ovary

Graffian follicle

Blastula

Gastrula

Correct! Wrong!

Q24)In ______ the egg is first fertilized outside the body and then it is inserted into the oviduct.

GIFT

ZIFT

ICSI

IVF

Correct! Wrong!

Q25)Oral contraceptive pills help in birth control by

Killing sperms

Killing ova

Preventing ovulation

Forming barrier between sperms and ova

Correct! Wrong!

Q26)Medical Termination of Pregnancy (MTP) is considered safe up to how many weeks of pregnancy?

Six weeks

Eight weeks

Twelve weeks

Eighteen weeks

Correct! Wrong!

Q27)The technique called gamete intra-fallopian transfer (GIFT) is recommended for those females

Whore cervical canal is too narrow to allow passage for the sperms

Who cannot provide suitable environment for fertilisation

Who cannot produce an ovum

Who cannot retain the foetus inside uterus

Correct! Wrong!

Q28)Cu ions released from copper-releasing Intra Uterine Devices (IUDs)

Prevent ovulation

Make uterus unsuitable for implantation

Increase phagocytosis sperms

Suppress sperm motility

Correct! Wrong!

Q29)Which one of the following statements is incorrect about menopause?

Generally occurs between the ages of 45 and 55

Causes the cessation of the female reproductive cycle

Anterior pituitary no longer produces FSH and LH

Ovaries slowly reduce their secretion of Estrogen

Correct! Wrong!

Q30)Ovum receives the sperm in the region of ... ..

Animal pole

Vegetal pole

Equator

Pigmented area

Correct! Wrong!

Q31)Sertoli cells are found ...

Between the seminiferous tubules

In the germinal epithelium of ovary

In the uppermost part of fallopian tube

In the germinal epithelium of seminiferous tubule

Correct! Wrong!

Q32)A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is

Germ cell internal fallopian transfer

Gamete inseminated fallopian transfer

Gamete intra fallopian transfer

Gamete internal fertilization and transfer

Correct! Wrong!

Q33)Several hormones like hCG, hPL, estrogen, progesterone are produced by

Fallopian tube

Pituitary

Ovary

Placenta

Correct! Wrong!

Q34)Polar body is produced during the formation of

Sperm

Secondary oocyte

Oogonium

Spermatocytes

Correct! Wrong!

Q35)Membrane that gives protection to embryo from external shocks is

Amnion

Allantois

Chorion

Placenta

Correct! Wrong!

Q36)Cryptorchidism is ... ...

Nondescent of testes in scrotum

Nondevelopment of testes

Removal of scrotum

Breaking connection of vas deferens

Correct! Wrong!

Q37)Which chemical of the egg attracts and holds sperm? ...

Fertilizin

Antifertilizin

Agglutin

Antiagglutinin

Correct! Wrong!

Q38)In case of nonfertilization, corpus luteum ...

Stops secreting progesterone

Changes to corpus albicans

Starts producing progesterone

None of the above

Correct! Wrong!

Q39)The first milk which comes out from the mother's mammary glands just after child birth is known as ...

Colostrum

Prolactin

Human placental lactogen

Oxytocin

Correct! Wrong!

Q40)Number of chromosomes in secondary oocyte stage in humans is ....

Correct! Wrong!

Q41)Fimbriae of fallopian tube ...

Release ovum from Graafian follicle

Cause endometrial changes for implantation

Help develop corpus luteum

Help collection of ovum after ovulation

Correct! Wrong!

Q42)A temporary endocrine gland in humans is ...

Islets of Langerhans

Pineal body

Corpus luteum

Corpus allata

Correct! Wrong!

Q43)Number of Bar Body in XXXX female:

Correct! Wrong!

Q44)A and B genes are linked. What shall be geno-type of progeny in a cross between AB/ab and ab/ab:

AAbb and aabb

AaBb and aabb

AABB and aabb

None

Correct! Wrong!

Q45)Probability of four son to a couple is:

1/4

1/8

1/16

1/32

Correct! Wrong!

Q46)Two no allelic genes produce the new phenotype when present together but fail to do so independently then it is called:

Epistasis

Polygene

Non-complimentary gene

Complimentary gene

Correct! Wrong!

Q47)Extra nuclear chromosomes occur in:

Peroxisorrie and Ribosome

Chloroplast and Mitochondria

Mitochondria and Ribosome

Chloroplast and Lysosome

Correct! Wrong!

Q48)Forthcoming generations are less adaptive than their parental generation due to:

Natural selection

Mutation

Genetic drift

Adaptation

Correct! Wrong!

Q49)Ratio of complementary genes is:

9 : 3 : 4

12 : 3 : 1

9 : 3 : 3 : 4

9:7

Correct! Wrong!

Q50)When dominant and recessive alleles express, itself together it is called:

Co-dominance

Dominance

Amphidominance

Pseudodominance

Correct! Wrong!

NEET MODEL BIOLOGY 1

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B GRADE

C GRADE

D GRADE