Gametogenesis DPP

Gametogenesis

253. Germ cells in mammalian gonads are produced by

 

(a) Only mitosis (b) Only meiosis (c) Mitosis and meiosis both (d) Without cell division

254. Cumulus covers

 

(a) Ovary (b) Ovum (c) Embryo (d) All of these

255. The eggs of insects are

 

(a) Mesolecithal and centrolecithal (b) Macrolecithal and centrolecithal (c) Mesolecithal and telolecithal (d) Macrolecithal and telolecithal

256. The minute cells which separate from the developing ova during their maturation are called

 

(a) Polar bodies (b) Primary spermatocytes (c) Primary oogonia (d) Secondary oocytes

257. A freshly unfertilized egg of hen contains

 

(a) One cell (b) 100 cells (c) 1,000 cells (d) 10,000 cells

258. The acrosome of the sperm contains

 

(a) Sugar (b) Enzymes (c) Cytoplasm (d) Nucleus

259. Between the spermatogonia are the

 

(a) Epithelial cells (b) Cells of Sertoli (c) Lymph spaces (d) Capillaries

260. The middle piece of spermatoaoan contains

 

(a) Nucleus only (b) Centriole only (c) Nucleus and mitochondria (d) Mitochondria and centriole

261. Among vertebrates which has the smallest size of ova

(a) Birds (b) Mammals (c) Reptiles (d) Amphibians

262. The size of human egg is

 

(a) 1.5 mm (b) 0.15 mm (c) 0.05 mm (d) 0.3 mm

263. The size of the egg chiefly depends upon the

 

(a) Size of the animal (b) Amount of yolk reserves in it (c) Amount of food taken by the mother (d) All the above

264. The germ cells are derived from

 

(a) Endoderm (b) Ectoderm (c) Mesoderm (d) Ectodrm and mesoderm

265. Nucleus in a sperm is situated in the

(a) Head (b) Middle piece (c) Tail (d) Acrosome

266. Process of synthesis of yolk is known as

 

(a) Vitellogenesis (b) Oogenesis (c) Histogenesis (d) Glycogenesis

267. Head of a mature sperm is composed of

 

(a) Elongated nucleus covered by acrosomal material (b) Two centrioles and axial filament (c) Acrosome without nucleus (d) Mitochondrial sheath and cytoplasm

268. Egg of rabbit and man are

(a) Microlecithal (b) Megalecithal (c) Telolecithal (d) Isolecithal

269. How many spermatozoa are produced by a secondary spermatocyte

(a) 4 (b) 8 (c) 1 (d) 2

270. The immatured stage eggs are called as

(a) Microlecithal (b) Oogenesis (c) Oocyte (d) Zygote

271. Massive amount of yolk present in the vegetal region of the egg, makes an egg

 

(a) Oligolecithal (b) Mesolecithal (c) Telolecithal (d) Centrolecithal

272. Cleidoic eggs are found in

 

(a) Birds (b) Mammals (c) Annelids (d) Molluscs

273. Sperms and ova arise from

(a) Collencytes (b) Spongioblasts (c) Archeocytes (d) Scleroblasts

 

274. Number of spermatozoons, a single primary spermatocyte ultimately produces in spermatogenesis, is

 

 (a) One (b) Two (c) Four (d) Eight

275. At the end of first meiotic division, the male germ cells differentiate into

(a) Spermatogonium (b) Primary spermatocyte (c) Secondary spermatocyte (d) Spermatid

276. If the growth of spermatid is normal and all cells survive, then the number of sperms formed from 50 primary spermatocytes will be

 

 (a) 50 (b) 100 (c) 200 (d) 25

277. Somatic chromosome number is 40. What shall be chromosome number in the cells of seminiferous tubule (a) 40 (b) 20 (c) 10 (d) 40 and 20
278. The human sperm was first seen and discovered by

 

(a) Hamm and Leeuwenhoek (b) Haeckel (c) Spallanzani (d) Von Baer

279. How many sperms and ova will be produced from 25 primary spermatocytes and 25 primary oocytes respectively

 

 (a) 100 sperm sand 25 ova (b) 100 sperms and 50 ova (c) 50 sperms and 25 ova (d) 100 sperms and 100 ova

280. 50 secondary oocytes in female and 50 secondary spermatocytes in male give rise to

 

(a) 100 ova and sperms (b) 200 ova and 50 sperms (c) 100 ova and 200 sperms (d) 50 ova and 100 sperms

281. The function of egg cell is / are

 

(a) It supplies a haploid set of chromosomes to the future embryo (b) It provides most of the cytoplasm to the embryo (c) It supplies food reserves to the embryo (d) All the above

282. Leathery eggs are found in

(a) Amphibians (b) Reptiles (c) Birds (d) Prototherian mammals

283. A sperm without acrosome, cannot

 

(a) Get food supply (b) Move (c) Penetrate into the seminal vesicle (d) Penetrate into the ovum

284. The middle piece of sperm provides

 

(a) Chromosomes (b) Energy (c) Food (d) Genes

285. Vitelline glands produce

 

(a) Ova (b) Yolk cells (c) Shell (d) Mucus cells

286. Human eggs are

 

(a) Microlecithal (b) Alecithal (c) Macrolecithal (d) Mesolecithal

287. Eggs of reptiles and birds are

 

(a) Alecithal (b) Isolecithal (c) Telolecithal (d) Homolecithal

288. Oogenesis is the process for the formation of

 

(a) Red blood cells (b) Sperms (c) Ova (d) Sperms and ova

289. First meiotic division during oogenesis occurs in

 

(a) First polar body (b) Second polar body (c) Primary oocyte (d) Secondary oocyte

290. Each primary spermatocyte gives rise to

 

(a) Four diploid spermatids (b) Eight diploid spermatids (c) Four haploid spermatids (d) Eight haploid spermatids

291. The diploid stages in gametogenesis are

(a) Primary spermatocyte and spermatogonium (b) Spermatogonium and spermatid (c) Secondary spermatocyte and spermatid (d) Primary spermatocyte and spermatocyte

292. The first step in reproduction at the cellular level is

(a) Formation of special sex cells (b) Cell division (c) Rapid increase in cell volume (d) Constriction of cytoplasm

293. Of the following animals which produces the smallest egg

 

(a) Humming bird (b) Salmon (c) Blue whale (d) American toad

 

294. The diameter of mammalian ovum is

 

(a) 50 microns (b) 100 microns (c) 2000 microns (d) 40,000 microns

295. During pre-vitellogenesis period of growth

 

(a) Nucleus of the primary oocyte increases tremendously in volume (b) Cytoplasm of the primary oocyte increases in volume (c) Both nucleus and cytoplasm of the primary oocyte increases tremendously in volume (d) Formation of yolk takes place

296. Tertiary egg membranes are lacking in mammals with the exception of the

 

(a) Euetherians (b) Metatherians (c) Prototherians (d) None of the above

297. The eggs in which fate of every part of the egg becomes fixed are called

 

(a) Cleidoic eggs (b) Non-cleidoic eggs (c) Mosaic eggs (d) Regulative eggs

298. Jelly layer of frog is

 

(a) Primary membrane (b) Secondary membrane (c) Secreated by the egg (d) Tertiary membrane

299. Vegetal hemisphere of egg consists of

(a) Yolk (b) Pigment (c) Grey crescent (d) Germinal vesicle

300. Ova in mammals were first identified by

 

(a) Malpighi (b) Wolff (c) Von Baer (d) Aristotle

301. Which of the following parts of the spermatozoan arises from centriole

 

(a) Apical cap (b) Head (c) Middle piece (d) Tail

302. Immediately after ovulation the mammalian egg is covered by a membrane known as

(a) Vitelline membrane (b) Chorion (c) Zona pellucida (d) Corona radiata

303. The number of polar bodies produced at the end of second meiotic division in female reproductive cells

(a) 3 (b) 2 (c) 1 (d) 0

304. Cockroach egg is called as

(a) Microlecithal (b) Macrolecithal (c) Isolecithal (d) Centrolecithal

305. The process by which ova are formed is known as

 

(a) Oogenesis (b) Ovulation (c) Oviposition (d) Oviparity

306. How many eggs will be formed form 100 primary oocytes

 

(a) 300 (b) 400 (c) 200 (d) 100

307. In which part of the spermatozoa mitochondria are present

 

(a) Head (b) Neck (c) Middle piece (d) Tail

308. Clupein protein occurs in

 

(a) Human sperms (b) Avian sperms (c) Human ova (d) Avian ova

309. Oogenesis comprises

 

(a) Multiplication phase (b) Growth phase (c) Maturation phase (d) All the above

310. Telolecithal eggs have

 

(a) Equal distribution of yolk (b) Average amount of yolk (c) Yolk present at a distance from nucleus (d) All the above

311. Egg which contains very little amount of yolk are called as

 

(a) Alecithal (b) Microlecithal (c) Mesolecithal (d) Polylecithal

312. The tail of the spermatozoan is subdivided into

 

(a) Two regions (b) Three regions (c) Four regions (d) Single piece

313. The actual genetic part of sperm is

 

(a) Tail (b) Middle piece (c) Head (d) Whole of it

 

314. The sperm head in man is

 

(a) Rod – shaped (b) Spoon – shaped (c) Cork screw – shaped (d) Spheroidal

315. Tertiary egg membrane is

 

(a) Vitelline membrane (b) Zona radiata (c) Albumen (d) Corona radiata

316. The process of maturation of reproductive cells of testes in male so as to form the male gamete or sperm is known as

 

(a) Spermatogenesis (b) Gametogenesis (c) Oogenesis (d) None of these

317. The acrosome of sperm is formed by

 

(a) Lysosome (b) RER (c) Golgi body (d) Mitochondria

318. Acrosome is found in the sperm at

 

(a) Top part (b) Middle piece (c) Behind the nucleus (d) Tail pat

319. Microlecithal eggs are found in

(a) Reptilia + Aves (b) Amphibia + Aves + Reptilia

 

(c) Reptilia + Aves + Chiroptera (d) Eutheria

320. How many chromosomes are there in spermatids of man

(a) 23 (b) 46 (c) 48 (d) 24

321. Eggs having yolk in their centre of cytoplasm in peripheral layer are called

 

(a) Isolecithal (b) Microlecithal (c) Centrolecithal (d) Telolecithal

322. The middle piece of the sperm contains

 

(a) Centriole (b) Nucleus (c) Proteins (d) Mitochondria

323. The egg of frog is

 

(a) Isolecithal (b) Mesolecithal (c) Telolecithal (d) Centrolecithal

324. How many secondary spermatocytes will form 400 spermatozoa

(a) 100 (b) 400 (c) 40 (d) 200

325. Sperm head mainly contains the

 

(a) Nucleus (b) Golgi body (c) Centrosome (d) Mitochondria

326. Eggs of placental mammals are

 

(a) Homolecithal (b) Alecithal (c) Microlecithal (d) Mesolecithal

327. Mammalian eggs have

(a) No yolk at all (b) Small amount of yolk (c) Large amount of yolk (d) Large amount of yolk concentrated at one pole

328. Mammalian ovum is surrounded by

 

(a) Zona reticulata (b) Zona pellucida (c) Zona fasciculata (d) None of these

329. Process of spermatogenesis is under the regulatory influence of

 

(a) Oxytocin (b) Vassopressin (c) Follicle stimulating hormone (d) Luteotrophic hormone

330. The first step in the sexual reproduction of animals is

 

(a) Spermatogenesis (b) Spermateleosis (c) Oogenesis (d) Gametogenesis

331. Polar bodies are formed during

 

(a) Oviposition (b) Oogenesis (c) Fertilization (d) Spermatogenesis

332. Spermeiogenesis is the process in which

 

(a) Spermatids change into spermatozoa (b) Spermatogonia produce spermatids (c) Spermatocytes give rise to spermatozoa (d) Dormant spermatozoa become active just before ejaculation

333. One of the minute cell which separates from the animal egg during maturation is known as

 

(a) Primary spermatogonia (b) Secondary oogonia (c) Primary oogonia (d) Polar bodies

 

334. Unfertilized egg of human contains or When released from ovary, human egg contains

(a) One Y chromosome (b) X and Y chromosome (c) XX chromosome (d) One X chromosome

335. The layer of cells immediately surrounding the ovum but outside the zona pellucida is called

 

(a) Corona radiata (b) Membrana granulosa (c) Theca interna (d) Cerminal epithelium

336. The membrane investing the ovum just outside the membrana granulosa is

(a) Zona pellucida (b) Theca interna (c) Vitelline membrane (d) Discus Proligerous

337. Spermatozoan term was coined by

 

(a) Von Baer (b) Leeuwenhoek (c) Spemann (d) Swammerdam

338. Spermioteleosis is another name of

 

(a) Maturation of ovum (b) Spermiogenesis (c) Spermatogenesis (d) Degeneration of sperms

339. Correct sequence of cell stages in spermatogenesis is

 

(a) Spermatocytes, spermatids, spermatogonia spermatozoa (b) Spermatogonia, spermatocytes, spermatids spermatozoa (c) Spermatocytes, spermatogonia, spermatids spermatozoa (d) Spermatogonia, spermatids, spermatocytes spermatozoa

340. The products of the first maturation division of germ cell in testis are known as

(a) Spermatids (b) Oocytes (c) Secondary spermatocytes (d) Sperms

341. Number of chromosomes in primary spermatocyte of frog is

 

(a) Same as in secondary spermatocyte (b) Same as in spermatid (c) Half of that in spermatogonium (d) Same as in spermatogonium

342. Which one of the following is haploid

(a) Oogonia (b) Primary spermatocyte (c) Primary oocyte (d) Secondary oocyte

343. Primary sex cells contain

 

(a) As many chromosome as the sperm (b) Haploid set of chromosomes (c) As many chromosomes as the ovum (d) Diploid set of chromosomes

344. Haploid number of chromosomes is found in

 

(a) Amoeba (b) Bacteria (c) Ovum (d) Zygote

345. Acrosome aids the sperm to

 

(a) Penetrate vitelline membrane of ovum (b) Find ovum (c) Swim (d) Higher activity

346. Spermatogenesis and sperm differentiation are under the control of

 

(a) FSH (b) LH (c) Testosterone (d) Parathyroid hormone

347. Enzyme hyaluronidase is synthesised in

 

(a) Head of sperm (b) Golgi bodies of acrosome (c) Lysosome of acrosome (d) Tail of sperm

348. At which stage of spermatogenesis sperm acquire their whole structural maturity and they contain a haploid nucleus & other organs

 

 (a) Spermiogenesis (b) Growth phase (c) Multiplication phase (d) Maturation phase

349. Lampbrush chromosomes are found inside

 

(a) Oocytes of frog (b) Salivary gland of silk moth (c) Salivary gland of drosophila (d) Nucleus of man

350. The cytoplasm surrounding the mitochondria found in the middle piece of the sperm is called

(a) Acrosome (b) Centrosome (c) Microsome (d) Manchette

351. Cledoic egg is an adaptation to

 

(a) Aquatic life (b) Marine life (c) Terrestrial life (d) Aerial life

352. In mammals egg are microlecithal and isolecithal because these are

 

(a) Oviparous (b) Viviparous (c) Ovoviviparous (d) None of these

353. How many ova and sperms would be produced from 100 secondary oocytes and 100 secondary spermatocytes during gametogenesis in human

 

(a) 100 ova, 100 sperms (b) 100 ova, 200 sperms (c) 50 ova, 100 sperms (d) 200 ova, 200 sperms

 

354. The acrosome plays important role in

 

(a) Motility of sperm (b) Penetrations of ovum by sperm (c) Providing energy to sperm (d) None of these

355. Which of the following statement is wrong as regards to man

 

(a) All eggs are alike (b) Eggs are of two types (c) Sperms are of two types (d) None of these

356. During their differentiation the spermatids are associated with

 

(a) Leydig cell (b) Sertoli cells (c) Kupffer cells (d) Primary spermatogonial cells

357. Factors which determine polarity of eggs are

(a) Direct electric current (b) Presence of neighbouring eggs (c) Position of sperm entry (d) Unequal distribution of substances in egg

358. In frog chromosome no. is reduced to half

 

(a) When 2nd polar body is separated (b) When 2nd polar body is divided (c) When 3rd polar body is separated (d) When 1st polar body is separated

359. Which mammals have more yolk than cytoplasm in their eggs

 

(a) Placental mammals (b) Aquatic mammals (c) Marsupials (d) Egg laying mammals

360. Vitellogenesis is the process of

 

(a) Formation of vitelline membrane around the developing egg cells (b) Formation of yolk sac membrane around the yolk mass during the development of reptiles and birds (c) Synthesis of yolk and its deposition within the growing oocyte of amphibians (d) Both (a) and (c)

361. Which one of the following statement is correct

 

(a) Albumen covering eggs of frog swells and forms protective jelly after coming in contact with water (b) Fertilization in rabbit is helped by hyaluronidase which is present in eggs (c) During fertilization in rabbit the entire sperm including tail enters egg (d) In case of toad, fertilization takes place in moist soil

362. Blastodisc or germinal disc refers to the protoplasm of egg, this is restricted to small area in

 

(a) Amphibian egg (b) Avian egg (c) Ascidian egg (d) Mammalian egg

363. The significance of the unequal cytokinesis during oogenesis is

 

(a) One cell out of the 4 daughter cells inherit most of the cytoplasm and reserve food material for developing embryo (b) To reduce the number of ova produced (c) To form polar bodies (d) None of the above

364. Egg in surrounded by a protective egg – case called the mermaid’s purse is found in

 

(a) Mammals (b) Reptiles (c) Oviparous sharks and rays (d) None of the above

365. The undifferentiated primordial germ cells are larger in size and their chromatin rich nuclei are distinct in

 

(a) Multiplication phase (b) Growth phase (c) Maturation phase (d) All the above

366. Motility of mammalian sperm is dependent on its

(a) Tail only (b) Middle piece only (c) Head only (d) Tail and middle piece both

367. A hatching egg of chick is covered by plaster of paris. It is harmful for

 

(a) Mother (b) Respiration (c) Excretion (d) None of these

368. In mammals growing oocytes are surrounding by special nutritive cells called

 

(a) Follicle cells (b) Nurse cells (c) Both (a) and (b) (d) None of the above

369. The plasma membrane of oocyte and that of follicle cells show close connections at some points in the form of

 

(a) Microvilli (b) Desmosomes (c) Cytoplasmic processes (d) None of the above

370. Polar bodies disintegrate later because

 

(a) They are very small in size (b) They have very little cytoplasm with no food reserves (c) They are non – functional (d) All the above

371. Movement of sperm is done by

 

(a) Tail (b) Head (c) Acrosome (d) Middle piece

 

372. Life span of human sperm is

 

(a) 1 hour (b) 10 hours (c) 24 hours (d) 24 days

373. The oocyte collects the yolk and other nutrients from the follicle cells by the process of

(a) Osmosis (b) Diffusion (c) Pinocytosis (d) All the above

374. After oogenesis how many polar bodies and ova are formed

 

(a) 1 matured ovum + 3 polar bodies (b) 2 matured ova + 2 polar bodies (c) 3 matured ova + 3 polar bodies (d) None of these

375. Function of the ring centriole is

 

(a) To form a spindle system (b) To form the axial filament of the flagellum (c) To form the manchette (d) Not known

376. Yolk of egg in the vertebrates is formed in

 

(a) Ovum (b) Lungs (c) Liver (d) Kidney

377. After 2nd maturation division, which is meiotic 2nd phase the result is

(a) Formation of matured ovum (b) Formation of ovum (c) Formation of embryo (d) Formation of sperm

378. The first meiotic division in the oogonium is completed when the egg is within the

 

(a) Uterus (b) Follicle (c) Fallopian tube (d) Ovary, before it is surrounded by follicles

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c	b		a		a		a		b		b		d
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b	b		b		a		a		a		a		a		d		c	c	a		c		c		c		c		d		a		a		d
281	282		283		284		285		286		287		288		289		290	291	292		293		294		295		296		297		298		299		300
d	d		d		b		b		b		c		c		c		c	a	b		c		b		c		c		c		d		a		c
301	302		303		304		305		306		307		308		309		310	311	312		313		314		315		316		317		318		319		320
d	c		a		d		a		d		c		a		d		c	b	a		c		b		c		a		c		a		d		a
321	322		323		324		325		326		327		328		329		330	331	332		333		334		335		336		337		338		339		340
c	d		b,c		d		a		b		a		b		c		d	b	a		d		d		a		b		a		b		b		c
341	342		343		344		345		346		347		348		349		350	351	352		353		354		355		356		357		358		359		360
d	d		d		c		a		a		b		a		a		d	c	b		b		b		b		b		d		d		d		c
361		362		363		364		365		366		367		368		369		370		371		372		373		374		375		376		377		378
a		b		a		c		a		d		b		a		b		b		a		c		c		a		d		a		a		b