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The third stage of parturition is called “after-birth”. In this stage
General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 16 of Quiz-1436 (Que-ID : 2909)
The third stage of parturition is called “after-birth”. In this stage
- excessive bleeding occurs
- fetus is bom and cervix and vagina contraction to normal condition happens
- fetus is bom and contraction of uterine wall prevents excessive bleeding
- placenta is expelled out
Ans → ()
Explanation → In this stage placenta is expelled out
This question is taken from this post → Human Reproduction - Biology Revision Test (Class 12th) | MCQs For NEET - attemp/practice
More MCQs in - Human Reproduction - Biology Revision Test (Class 12th) | MCQs For NEET
Q. 1 of Quiz-1436 (Que-ID : 2894)
Ovulation in the human female normally takes place during the menstrual cycle
- at the mind secretory phase
- just before the end of the secretory phase
- at the beginning of the proliferative phase
- at the end of the proliferative phase
Q. 2 of Quiz-1436 (Que-ID : 2895)
After ovulation Graafian follicle regreses into
- corpus atresia
- corpus callosum
- corpus luteum
- corpus albicans
Q. 3 of Quiz-1436 (Que-ID : 2896)
Immediately after ovulation, the mammalian egg is covered by a membrane known as
- chorion
- zona pellucida
- corona radiata
- vitelline membrane.
Q. 4 of Quiz-1436 (Que-ID : 2897)
Which one of the following events is correctly matched with the time period in a normal menstrual cycle ?
- Release of egg : 5 th day
- Endometrium regenerates : 5 – 10 days
- Endometrium secretes nutrients for implantation: 11 – 18 days
- Rise in progesterone level : 1 – 15 days
Q. 5 of Quiz-1436 (Que-ID : 2898)
If mammalian ovum fails to get fertilised, which one of the following is unlikely ?
- Corpus luteum will distintegrate.
- Progesterone secretion rapidly declines.
- Estrogen secretion increases.
- Primary follicle starts developing
Q. 6 of Quiz-1436 (Que-ID : 2899)
A human female reaches menopause aroung the age of__ yrs
- 50
- 15
- 70
- 25
Q. 7 of Quiz-1436 (Que-ID : 2900)
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is
- acrosomal reaction
- cortical reaction
- acrosin reaction
- bindin reaction
Q. 8 of Quiz-1436 (Que-ID : 2901)
Which part of the sperm plays an important role in penetrating the egg membrane ?
- Allosome
- Tail
- Autosome
- Acrosome
Q. 9 of Quiz-1436 (Que-ID : 2902)
In oocyte secondary maturation occurs in
- ovary
- abdominal cavity
- Fallopian tube
- uterus.
Q. 10 of Quiz-1436 (Que-ID : 2903)
Besides activating the egg another role of a sperm is to carry to egg
- RNA
- mitochondria
- DNA
- ribosomes
Q. 11 of Quiz-1436 (Que-ID : 2904)
Preparation of sperm before penetration of ovum is
- spermiation
- cortical reaction
- spermiogenesis
- capacitation
Q. 12 of Quiz-1436 (Que-ID : 2905)
The function of the secretion of prostate gland is to
- inhibit sperm activity
- attract sperms
- stimulate sperm activity
- none of these.
Q. 13 of Quiz-1436 (Que-ID : 2906)
Lower narrow end of uterus is called
- urethra
- cervix
- clitoris
- vulva
Q. 14 of Quiz-1436 (Que-ID : 2907)
Bartholin’s glands are situated
- on the either side of vagina in humans
- on either side of vas deferens in humans
- on either side of penis in humans
- on either side of Fallopian tube in humans
Q. 15 of Quiz-1436 (Que-ID : 2908)
In human adult females oxytocin
- stimulates pituitary to secrete vasopressin
- causes strong uterine contractions during parturition
- is secreted by anterior pituitary
- stimulates growth of mammary glands
Q. 16 of Quiz-1436 (Que-ID : 2909)
The third stage of parturition is called “after-birth”. In this stage
- excessive bleeding occurs
- fetus is bom and cervix and vagina contraction to normal condition happens
- fetus is bom and contraction of uterine wall prevents excessive bleeding
- placenta is expelled out
Q. 17 of Quiz-1436 (Que-ID : 2910)
spot the odd one out from the following structures with reference to the male reproductive system
- Rate testis
- Epididymis
- Vasa efferentia
- Isthmus
Q. 18 of Quiz-1436 (Que-ID : 2911)
In humans, at the end of the first meiotic division, the male germ cells differentiate into the
- spermatids
- spermatogonia
- primary spermatocytes
- secondary spermatocytes
Q. 19 of Quiz-1436 (Que-ID : 2912)
How many sperms are formed from a secondary spermatocyte ?
- 4
- 8
- 2
- 1
Q. 20 of Quiz-1436 (Que-ID : 2913)
How many sperms are formed from 4 primary spermatocytes ?
- 4
- 1
- 16
- 32
Q. 21 of Quiz-1436 (Que-ID : 2914)
In spermatogenesis, reduction division of chromosome occurs during conversion of
- spermatogonia to primary spermatocytes
- primary spermatocytes to secondary spermatocytes
- secondary spermatocytes to spermatids
- spermatids to sperms
Q. 22 of Quiz-1436 (Que-ID : 2915)
Which of the following groups of cells in the male gonad, represent haploid cells ?
- Spermatogonial cells
- Germinal epithelial cells
- Secondary spermatocytes
- Primary spermatocytes
Q. 23 of Quiz-1436 (Que-ID : 2916)
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called
- spermiogenesis
- spermatogenesis
- spermatocytogenesis
- spermiation
Q. 25 of Quiz-1436 (Que-ID : 2918)
At what stage of life is oogenesis initiated in a human female ?
- At puberty
- During menarch
- During menopause
- During embryonic development
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Which one of the following is not a greenhouse gas?
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The nitrogen exists as two nitrogen atoms joined by
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- tetra covalent bonds
- triple covalent bonds
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What is first name of heart sound
- Dubb
- Lubb
- Both a and b
- None of the above
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- Carbonic anhydrase
- Lysosome
- Ligase
- None of the above
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- Protein
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- Molecules move in Brownian motion
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- Diffusion depends on the type of living system
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TCA cycle was discovered by
- Otto Meyerhof
- Hans Kreb
- Gustav Embden
- All of these
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- Extracellular crystalline protein
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- DNA can be seen without staining in visible light
- Ethidium bromide stained DNA can be seen in visible light
- Ethidium bromide stained DNA can be seen under exposure to UV light
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The DNA polymerase enzyme used in PCR is obtained from
- Thermus aquaticus
- Escherichia coli
- Agrobacterium tumefaciens
- Salmonella typhimurium
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A protein or polysaccharide molecule that stimulates antibody formation.
- antigen
- antibiotics
- exotoxin
- endotoxins
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Which of the following STDs are not completely curable ?
- Chlamydiasis, gonorrhoea, trichomoniasis
- Chancroid syphilis, genital warts
- AIDS, syphilis, hepatitis B
- AIDS, genital herpes, hepatitis B
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The basic cyclic pattern of inspiration and expiration are established by a respiratory center within the ______.
- Cerebellum
- Medulla oblongata
- Cerebral cortex
- Thalamus
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Biofertilisers are the living organisms which
- bring about soil nutrient enrichment
- maximise the ecological benefits
- minimise the environmental hazards
- all of these
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Glands of Zeis are associated with eyelashes. These are modified
- Sweat glands
- Mucous glands
- Sebaceous glands
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Parasites that feed on the external surface of the host organism are called
- Ecto parasites
- Endo parasites
- Brood parasitism
- None of the above
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Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
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The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively
- 12, 24, 12
- 24, 12, 12
- 12, 24, 24
- 24, 12, 24
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Which among the following is not uricootelic
- Mammal
- Reptiles
- Birds
- Snails
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- Reptiles
- Birds
- Snails
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- Muscle tissue
- Nervous tissue
- Connective tissue
- Epithelial tissue
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- Ecological niche
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- Satara
- Jhansi
- Awadh
- Nagpur
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Intercalary meristems are of
- Permanent nature
- Temporary nature
- Some are permanent some temporary
- None of these
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Which of the following process (C4 cycle) occurs in bundle sheath cells?
- Regeneration
- Fixation
- Carboxylation
- Decarboxylation
Q. 19 of Quiz- (Que-ID : 3037)
Cavity formed between somatic and splanchnic mesoderm is called
- Gastrocoele
- Blastocoele
- Coelom
- Neurocoele
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A person with sickle cell anaemia is
- more prone to malaria
- more prone to typhoid
- less prone to malaria
- less prone to typhoid
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Arbor vitae is mainly composed of-
- Gray Matter
- Neuroglial cells
- White matter
- All of these
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The petiole is swollen and spongy in
- Nepenthes
- Trapa
- Clematis
- all of the above
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That animal who can bear one third loss of water of one third body weight is
- Necturus
- Camel
- Wall Lizzard
- Kyton
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Which of the following is incorrectly matched ?
- Black rot of crucifers Bacteria
- Brown rust of wheat Fungi
- Late blight of potato Virus
- Red rot of sugarcane Fungi
Q. 14 of Quiz- (Que-ID : 3032)
The ability to regain or recover the lost or injured part of body is
- Aging
- Regeneration
- Abnormal development
- Primary inductio
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Which one of the following disease is non – communicable ?
- Diphtheria
- Flu
- Cancer
- Malaria
Q. 9 of Quiz- (Que-ID : 3327)
Hepatitis B is transmitted through
- sneezing
- female Anopheles
- coughing
- blood transfusion
Q. 15 of Quiz- (Que-ID : 2758)
Diurnal rhythm of body is maintained by
- Melatonin
- Isthmus
- PTH
- Norepinephrine
Q. 11 of Quiz- (Que-ID : 2829)
The wall of the ovary forms
- pericarp
- fruit wall
- fruit
- both (a) and (b).
Q. 18 of Quiz- (Que-ID : 2786)
the phylogeneticsystem of classification was put forth by
- Theophrastus
- George Bentham and Joseph Dalton Hooker
- Carolus Linnaeus
- Adolf Engler and Karl Prantl
Q. 24 of Quiz- (Que-ID : 3342)
Which of the following is affected by the infection of Wuchereria bancrofti ?
- Lymphatic vessels
- Respiratory system
- Nervous system
- Blood circulation
Q. 18 of Quiz- (Que-ID : 2811)
The thin and convoluted outer layer of gray matter that covers the cerebral hemispheres is
- Medulla oblongata
- Thalamus
- Cerebral cortex
- Meninges
Q. 11 of Quiz- (Que-ID : 3354)
Hisardale is a new breed of sheep developed in Punjab by crossing
- Merino ram and Bikaneri ewe
- Assel ram and White leghorn ewe
- Rhode Island ram and White leghorn ewe
- Cochin ram and Ghagus ewe
Q. 4 of Quiz- (Que-ID : 3072)
The law of limiting factor was given by
- Calvin
- Blackman
- Priestley
- None of these
Q. 17 of Quiz- (Que-ID : 3035)
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- J-shaped
- S-shaped
- I-shaped
- Parabolic
Q. 12 of Quiz- (Que-ID : 3380)
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- algae
- bacteria
- viruses
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Q. 10 of Quiz- (Que-ID : 3353)
Which of the following is an example of a cross-breed ?
- Mule
- Hilsa
- Hisardale
- Sahiwal
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