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751.

Which is correct sequence of egg layers from outside to insideA. Rardiata, Proliferous and PellucidaB. Proliferous, Radiata and PellucidsC. Proliferous, Yolk Sac and RadiataD. None of the above.

Answer» Correct Answer - B
752.

When is progesterone secreted?A. after ovulationB. after parturitionC. before ovualationD. at the time of parturition

Answer» Correct Answer - a
753.

Which duct of the embryo gives rise to epididymis?A. Wolffian ductB. Mullerian ductC. Stensons ductD. Whartons duct

Answer» Correct Answer - a
Wolffian duct (also called as mesonephric duct) gives rise to epidymiss.
754.

After ovulation, the collapsd ovarian follicle shrinks and become filled with cells to form:A. corpus atresiaB. corpus albicansC. corpes luteumD. corpus adiposum

Answer» Correct Answer - c
755.

Reptile and bird egg areA. MacrolecithalB. OligolecithalC. MesolecithalD. Alecithal.

Answer» Correct Answer - A
756.

Fertilization is fusion ofA. Diploid spermatozoan with diploid ovum to form diploid zygoteB. Haploid spermatozoan with diploid ovum to form diploid zygoteC. Diploid spermatozoan with haploid ovum to form diploid zygoteD. Haploid spermatozoan with haploid ovum to form diploid zygote

Answer» Correct Answer - D
(D) Fertilization is fusion of haploid spermatozoan with haploid ovum to form diploid zygote.
757.

Egg of Cockroach isA. AlecithalB. Oligolecithal CentrolecithalC. MicrolecithalD.

Answer» Correct Answer - C
758.

Chromosome number is halved duringA. Formation of first polar bodyB. Formation of second polar bodyC. Meiosis IID. Division of secondary oocyte.

Answer» Correct Answer - A
759.

The primary regulator of Leydig cell secretion is:A. FSH releasing factorB. Androgen-binding protienC. Luteinizing hormone (LH)D. Follicle stimulating harmone

Answer» Correct Answer - c
Lutienzing harmone(LH), also known as interstitial cell stimulating harmone (ICSH), regulates the production oftesterone by Leydig cells.
760.

Which of the following is independent of testosterone?A. spermatogenosisB. Development of penisC. The function of prostate glandsD. Foetal development of the testis from a bipotential gland

Answer» Correct Answer - d
The development of testis from an indifferent gonad is dependent on the prsence of the determining determining factor (TDF), agene present on the short arm of the Y-chromosome.
761.

Fertilization is fusion ofA. Diploid spermatozoan with diploid ovum to form dploid zygoteB. Haploid spermatozoan with diploid ovum to form diploid zygoteC. Diploid spermatozoan with haploid ovum to form dioploid zygoteD. Haploid spermatozoan with haploid ovum to form diploid zygote.

Answer» Correct Answer - D
762.

Egg of frog isA. CentrolecithalB. MacrolecithalC. TelolecithalD. Microlecithal

Answer» Correct Answer - C
(C ) Types of eggs based on the distribution of yolk in eggs.
1. Homolecithal eggs: Yolk is uniformly distributed in the cytoplasm of Egg. e.g.: Echinodermata and protochordata.
2. Meiolecithal eggs (Discoidale egg): Yolk is distributed all over cytoplasm except a disc like area for the nucleus. e.g.: Reptiles, birds and egg laying mammals (prototherians).
3. Telolecithal eggs: Yolk is found on one sideor vegetal half. e.g.: Amphibians (frog).
4. Centrolecithal eggs: Yolk is present at centre. e.g.: Insects.
763.

Mossic cleavage occurs inA. CamelB. Dog FishC. WhaleD. Echinococcus.

Answer» Correct Answer - D
764.

Intestine develops fromA. EctodermB. EndodermC. MesodermD. Pharyngeal pouch

Answer» Correct Answer - B
(B) Intestine develops from endoderm.
765.

Chromosome number is halved duringA. Formation of first polar bodyB. Formation of second polar bodyC. Meiosis IID. Division of secondary oocyte

Answer» Correct Answer - A
(A) Chromosome number is haved during formation of first polar body.
766.

Egg of Frog isA. CentrolecithalB. MacrolecithalC. TelolecithalD. Microlecithal.

Answer» Correct Answer - C
767.

Fixing up of the blastocyst in the wall of the uterus is known as:A. fertilizationB. placentationC. impregnationD. implantation

Answer» Correct Answer - d
768.

Ovulation occurs in and onA. OvaryB. About 14th dayC. Both A and BD. None of these

Answer» Correct Answer - C
769.

Medulla oblongata develops fromA. EctodermB. EndodermC. MesodermD. Mesenchyme.

Answer» Correct Answer - A
770.

Intestine develops fromA. EctodermB. EndodermC. MesodermD. Pharyngeal pouch.

Answer» Correct Answer - B
771.

In the development of Frog. Gastrulation is followed byA. InvaginationB. EmbolyC. EpibolyD. All the above.

Answer» Correct Answer - D
772.

Movement of sperm is byA. HeadB. AcrosomeC. Middle pieceD. Tail/flagellum

Answer» Correct Answer - D
(D) Movement of sperm is by tail/ flagellum.
773.

Which of the following statement is incorrect ?A. Fertilization occurs in fallopian tubeB. Fertilization is a physio- chemical process / eventC. Cleavage produces morulaD. Cleavage leads to increased mass of protoplasm

Answer» Correct Answer - D
774.

Movement of sperm is byA. HeadB. AcrosomeC. Middle pieceD. Tail flagellum.

Answer» Correct Answer - D
775.

Function of alantois isA. RespirationB. ExcretionC. Nutrition and excretionD. Protection from shock.

Answer» Correct Answer - C
776.

Free martin is an example of :A. Hormonal controal of sexB. Sex reversalC. Transformer geneD. Nutritional control of sex.

Answer» Correct Answer - A
777.

Cortical granules are associated withA. OogenesisB. SpermatogenesisC. CleavageD. Fertilization

Answer» Correct Answer - D
778.

Cortical granules are associated withA. OogenesisB. Spermatogenesis does not occurC. CleavageD. Fertilization.

Answer» Correct Answer - D
779.

Free martin is an example of :A. Hormonal control of sexB. Sex reversalC. Transformer geneD. Nutritional control of sex

Answer» Correct Answer - A
(A) Free Martin is an example of hormonal control of sex.
780.

Meiosis during sperm formation of Ascaris, was first observed byA. FlemingB. BoveriC. BrauerD. De Vries

Answer» Correct Answer - C
781.

Early embryonic stage that follows blastula isA. MorulaB. AmphiblastulaC. RadulaD. Gastrula

Answer» Correct Answer - D
(D) Correct sequence during embryonic development is : Fertilization `to` Zygote `to` Cleavage `to` Morula `to` Blastula `to` Gastrula.
782.

Onset of pregnancyA. Stimulates testosterone secretionB. Leads to degeneration of ovaryC. Inhibits further ovulationD. Inhibits fusion of egg and sperm nuclei

Answer» Correct Answer - C
783.

In mammals, the onset the onset of pregnancy causesA. Secretion of testosteroneB. Degeneration of ovaryC. Inhibition of further ovulationD. Inhibition of fertilization

Answer» Correct Answer - C
(C ) In mammals, the onset of pregnancy causes inhibition of further ovulation.
784.

Umbilical cord containsA. UmbilicusB. PlacentaC. Discus proligerusD. Allantoic artery and vein

Answer» Correct Answer - D
(D) Umbilical cord contains allantoic artery and vein.
785.

Mammalian foetus is directly surrounded byA. yolk sac cavityB. aminiotic cavityC. allantoic cavityD. primary digestive cavity

Answer» Correct Answer - B
786.

Blood flowing through umbilical cord of mammalian embryo isA. 100% foetalB. 100% maternalC. 50% maternal and 50% foetalD. 75% maternal and 25% foetal

Answer» Correct Answer - A
787.

Number of chromosomes in secondary oocyte stage in humans isA. 23B. 46C. 18D. 20

Answer» Correct Answer - A
(A) Number of chromosomes in secondary oocyte (n) stage in humans is 23
788.

Which is incorrectA. Fertilisation occurs in fallopian tubeB. Fertilisation is physico-chemical eventC. Cleavage leads to increased mass of protoplasmD. Cleavage produces morula.

Answer» Correct Answer - C
789.

How many centrioles are normally present in a sperm?A. OneB. TwoC. ManyD. None of these

Answer» Correct Answer - B
790.

Which organelle is absent in human sperm?A. ERB. NucleusC. CentrioleD. Mitochondria

Answer» Correct Answer - a
791.

Olfactory epithelium develop fromA. Embryonic endodermB. Embryonic ectodermC. Embryonic mesodermD. Embronic mesenchyme.

Answer» Correct Answer - B
792.

Some parts developed from ectoderm areA. Retina,epidermis and brainB. Brain, liver and gillsC. Dermis,nerves and lungsD. Spinal cord, epidermis and heart.

Answer» Correct Answer - A
793.

Eggs produced in the year by an ovary of non- pregnant woman isA. 12B. 6C. 24D. 48

Answer» Correct Answer - B
(B) Eggs produced in a year by an ovary of non-pregnant woman is six.
794.

A protective layer arround testis isA. Tunica adventitiaB. Tunica vasculosaC. Tunica mediaD. Tunica albuginea.

Answer» Correct Answer - D
795.

Relaxin is produced byA. OvaryB. TestisC. AdrenalD. Pituitary gland

Answer» Correct Answer - A
(A) Relexin is produced by ovary.
796.

Type of placenta in the human isA. Chorionic , discoidal, epitheliochorial , deciduateB. Decidutate, hemochorial , diffuse , allantochorionicC. Hemochorial , metadiscoidal, deciduate, chorionicD. Non-decidutae, discoidal , deciduate hemoendothelial

Answer» Correct Answer - C
797.

Shortly before menstruation the blood levels ofA. Estrogen and progesterone decreaseB. Estrogen and progesterone increaseC. FSH stabilizeD. Only progesterone increases

Answer» Correct Answer - A
(A) Shortly before menstruation the blood levels of estrogen and progesterone decrease.
798.

During oogenesis in mammals, the second meiotic divison occurs:A. before ovulationB. after fertilizationC. in the formation of the primary oocyteD. in the formation of the secondary oocyte

Answer» Correct Answer - b
799.

During cleavage, nucleocytoplasmic ratio nucelus/cytoplasmA. IncreasesB. DecreasesC. Remains sameD. None of the above.

Answer» Correct Answer - A
800.

Oogenesis comprises:A. maturation phaseB. growth phaseC. multiplication phaseD. all of these

Answer» Correct Answer - d