datavorous/entrance-exam-dataset huggingface dataset:
The addition of halogens to alkenes is an example of which type of reaction?

Options:
A Substitution reaction
B Elimination reaction
C Electrophilic addition reaction
D Radical chain reaction

The correct answer is:
Electrophilic addition reaction

Solution:
The addition of halogens to alkenes is an example of an electrophilic addition reaction.

Topic: Chemistry, Hydrocarbons, NEET
The addition of HCl will not suppress the ionization of

Options:
A CH3COOH
B C6H5COOH
C H2S
D H2SO4

The correct answer is:
H2SO4

Solution:
The addition of HCl will not suppress the ionization of H2SO4 as H2SO4 is itself a strong acid. However, addition of HCl will suppress the ionization of CH3COOH,C6H5COOH,H2S as these are weak acids.

Topic: Chemistry, Ionic Equilibrium, NEET
The addition of NH4Cl to 0.1 M acetic acid will cause

Options:
A Increase in its pH value
B Decrease in its pH value
C No change in its pH value
D Unpredictable change in its pH value

The correct answer is:
Decrease in its pH value

Solution:
NH4Cl is salt of weak base and strong acid, addition of NH4Cl will increase H+ ion concentration

Topic: Chemistry, Ionic Equilibrium, NEET
The additional muscles used for forceful breathing in humans are:

Options:
A Diaphragm and external intercostal muscles
B Abdominal muscles and internal intercostal muscles
C Diaphragm and abdominal muscles
D External and internal intercostal muscles

The correct answer is:
Abdominal muscles and internal intercostal muscles

Solution:
Normal inspiration is an active process which involves contraction of diaphragm and external intercostal muscles, which increases the volume of thoracic volume and this pulmonary volume and therefore decreases pulmonary pressure. The ability to increase the strength of inspiration and expiration can be performed with the help of additional muscles in the abdomen and internal intercostal muscles.

Topic: Biology, Breathing and Exchange of Gases, NEET
The administration of progestogens or progestogen-estrogen combinations within 72 hours of coitus has been found to be very effective as

Options:
A emergency contraceptive
B a major protocol in IVF techniques
C analgesics
D pregnancy inducing agent

The correct answer is:
emergency contraceptive

Solution:
Emergency contraception refers to methods of contraception that can be used to prevent pregnancy after unprotected sexual intercourse. The emergency contraceptive pill regimens recommended by WHO are ulipristal acetate, levonorgestrel, or combined oral contraceptives (COCs) consisting of Ethinyl estradiol plus levonorgestrel.

Topic: Biology, Reproductive Health, NEET
The administration of progestogens or progestogen–oestrogen combinations or IUDs within 72 hours of coitus have been found to be very effective as

Options:
A Emergency contraceptive
B Sterilisation technique
C Parturition inducers
D Abortifacients

The correct answer is:
Emergency contraceptive

Solution:
Emergency contraception refers to methods of contraception that can be used to prevent pregnancy after sexual intercourse.The emergency contraceptive pill regimens recommended by WHO are ulipristal acetate, levonorgestrel, or combined oral contraceptives (COCs) consisting of ethinyl estradiol plus levonorgestrel.

Topic: Biology, Reproductive Health, NEET
The adrenocorticotropic hormone secreted by anterior pituitary stimulates the secretion of:

Options:
A Glucocorticoids from adrenal gland
B Adrenaline from adrenal gland
C Epinephrine from adrenal gland
D Adrenaline from nephrons

The correct answer is:
Glucocorticoids from adrenal gland

Solution:
Adrenocorticotropic hormone promotes the synthesis and secretion of glucocorticoids.
Glucocorticoid are potent inhibitors of inflammatory processes and are used in the treatment of asthma.

Topic: Biology, Chemical Coordination and Integration, NEET
The adult _____________ are radially symmetrical but larvae are bilaterally symmetrical.

Options:
A Asterias
B Balanoglossus
C Obelia
D Ascaris

The correct answer is:
Asterias

Solution:
Asterias belongs to the Phylum Echinodermata. The characteristic feature of echinoderm is the presence of endoskeleton made up of calcareous ossicles. They have a complete digestive system with ventrally placed mouth and dorsally placed anus. The organization seen is organ-system level. Echinoderms are triploblastic and coelomate animals. The adults are radially symmetrical where as the larvae are bilaterally symmetrical. Presence of water vascular system is the distinct feature of echinoderms. Examples are Sea Urchin, Brittle star, etc. Balanoglossus is a hemichordate whose adult as well as larva are bilaterally symmetrical. Obelia is a cnidarian whose adult as well as larva are radially symmetrical. Ascarisis a round whose adult as well as larva are bilaterally symmetrical.

Topic: Biology, Animal Kingdom, NEET
The aestivation that may be seen in the sepals of family Papilionoideae is

Options:
A vexillary
B imbricate
C contorted
D all of these

The correct answer is:
imbricate

Solution:
Family Papilionoideae also called Fabaceae, has 5 sepals in the calyx. Many members show fused on gamosepalous while others may show valvate or imbricate aestivation. They have 5 petals that show vexillary aestivation.

Topic: Biology, Morphology of Flowering Plants, NEET
The age of the wood if only 116 part of the original C14 is present in its piece is ( T 1/2 of C14 is 5580 years)

Options:
A 5580 years
B 11160 years
C 22320 years
D 16740 years

The correct answer is:
22320 years

Solution:
Fraction of atoms left after n half-lives, N N 0 = ( 1 2 ) n
1 16 = 1 2 4
⇒n=4
∴ age =4×5580 years
=22320 years

Topic: Physics, Nuclear Physics, NEET
The age pyramid for human population is shown below.

Which of the following conclusion can be drawn from the given age pyramid?

Options:
A It represents that the population is young and growing.
B It is a pyramid of declining population.
C It shows that the population is stable.
D It shows that the population size is fluctuating.

The correct answer is:
It represents that the population is young and growing.

Solution:
An age pyramid is a structural representation of age distribution (percent individuals of a given age or age group) plotted for the population.

The given population age pyramid is a graphic representation of a young or growing population that appears like a triangle. The population has a very high proportion of pre-reproductive individuals, proportionate numbers of reproductive individuals are moderate, and post-reproductive individuals are proportionately fewer. The population is said to be expanding or increasing type.

Topic: Biology, Organisms and Populations, NEET
The age pyramid with broad base indicates:

Options:
A high percentage of old individuals.
B low percentage of young individuals.
C a stable population.
D high percentage of young individuals.

The correct answer is:
high percentage of young individuals.

Solution:
The age pyramid geometrically represents the proportions of different age groups in population. The triangular shape of age pyramid represents the expanding growth status of human population. Base of the pyramid represent the pre reproductive individuals or young individuals. more the broader the stage, more the number of individuals at that stage.
Related Theory
Age distribution depends upon the natality and mortality and determines the population growth. With regard to age distribution, there are three kinds of population.

Topic: Biology, Ecosystem, NEET, NEET 2013 (Karnataka)
The ageing of leaves is called

Options:
A Necrosis
B Senescence
C Photoperiodism
D Vernalization

The correct answer is:
Senescence

Solution:
The ageing of leaves is called senescence. It is the process of growing old, which occurs in all species and is typified by a gradual slowing down of metabolism and breakdown of tissues, often accompanied by endocrinal changes.

Topic: Biology, Plant - Growth and Development, NEET
The air is a mixture of a number of gases. The major components are oxygen and nitrogen with approximate proportion of 20% is to 79% by volume at 298 K. The water is in equilibrium with air at a pressure of 10 atm. At 298 K , if the Henry’s law constants for oxygen and nitrogen at 298 K are 3.30 × 107mm and 6.51 × 107mm respectively, calculate the composition of these gases in water.

Options:
A x(O2) = 9.22×10-5, x(N2) = 4.6 x 10-5
B x(O2) = 4.6 x 10-5, x(N2) = 9.22×10-5
C x(O2) = 5.8 x 10-5, x(N2) = 7.34×10-5
D x(O2) = 7.34 x 10-5, x(N2) = 5.8×10-5

The correct answer is:
x(O2) = 4.6 x 10-5, x(N2) = 9.22×10-5

Solution:
Correct Option is : (B)
x(O2) = 4.6 x 10-5, x(N2) = 9.22×10-5

Topic: Chemistry, Solutions, NEET
The Air Prevention and Control of Pollution Act came into force in

Options:
A 1975
B 1981
C 1985
D 1990

The correct answer is:
1981

Solution:
Air prevention and control of pollution protection act come into foroe in 1991. Environmental protection act in 1996 and water (Prevention and $\infty$ ntrol of Pollution) act in 1974.

Topic: Biology, Environmental Issues, NEET, NEET 2013 (All India)
The alcohol which easily reacts with conc. HCl is

Options:
A CH 3 −CHOH− CH 2 − CH 3
B (CH 3 ) 3 −C−OH
C CH 3 − CH 2 − CH 2 − CH 2 −OH
D (CH 3 ) 3 −CH− CH 2 OH

The correct answer is:
(CH 3 ) 3 −C−OH

Solution:
Tertiary alcohol readily reacts with halogen acid
Presence of 3 alkyl group increases electron density on removal of −OH group 3o carbonium ion is formed which is most stable

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
The algebraic sum of two co-initial vectors is 16 units. Their vector sum is 8 units and the resultant of the vectors are perpendicular to the smaller vector. Then magnitudes of the two vectors are -

Options:
A 2 unit & 14 unit
B 4 unit & 12 unit
C 6 unit & 10 unit
D 8 unit & 8 unit

The correct answer is:
6 unit & 10 unit

Solution:
P+Q=16 (i)
P2+Q2+2PQcos Î¸ =64 (ii)
tan 90 Î¿ = Q sin Î¸ P + Q cos Î¸
â P + Q cos Î¸ = 0
cos Î¸ = - P Q
From Eq. (ii)
P 2 + Q 2 + 2 PQ cos Î¸ = 64
P 2 + Q 2 + 2.P.Q - P Q = 64
- P 2 + Q 2 = 64
Q + P Q - P = 64
as P + Q = 16
Q - P = 4
Solving we get
2 Q = 20
Q = 10 units
P = 6 units

Topic: Physics, Mathematics in Physics, NEET
The alien species (Nile perch) introduced into Lake Victoria in

Options:
A South Africa
B North America
C South America
D East Africa

The correct answer is:
East Africa

Solution:
Alien species are those species that are introduced accidentally or maybe intentionally in an area they are not native to. These can be plants or animals or pathogens. When introduced these may cause environmental harm or also affect human health. One such example is the introduction of Nile perch in Lake Victoria. Nile perch is a fish with economic importance but it was seen that it is becoming extinct due to lack of food. Thus these were introduced in different lakes one of them being Lake Victoria in East Africa. This resulted in an increase in population of Nile perch but affected the original variety that existed in that lake i.e. cichlids fishes couldn't survive because of these alien species.

Topic: Biology, Biodiversity and its Conservation, NEET
The alimentary canal of a deceased individual was cut transversely for examination of the arrangement of layers from outside to inside. Select the correct sequence of arrangement for the layers examined.

Options:
A Serosa → Longitudinal muscles → Circular muscles → Mucosa → Submucosa
B Mucosa → Submucosa → Circular muscles → Longitudinal muscles → Serosa
C Serosa → Longitudinal muscles → Circular muscles → Submucosa → Mucosa
D Serosa → Longitudinal muscles → Oblique muscles → Circular muscle → Submucosa → Mucosa

The correct answer is:
Serosa → Longitudinal muscles → Circular muscles → Submucosa → Mucosa

Solution:
The wall of alimentary canal from oesophagus to rectum possesses four layers namely serosa, muscularis, sub-mucosa and mucosa. Serosa is the outermost layer and is made up of a thin mesothelium (epithelium of visceral organs) with some connective tissues. Muscularis is formed by smooth muscles usually arranged into an inner circular and an outer longitudinal layer. An oblique muscle layer may be present in some regions. The submucosal layer is formed of loose connective tissues containing nerves, blood and lymph vessels. In duodenum, glands are also present in sub-mucosa. The innermost layer lining the lumen of the alimentary canal is the mucosa. This layer forms irregular folds (rugae) in the stomach and small finger-like foldings called villi in the small intestine

Topic: Biology, Digestion and Absorption, NEET
The alkali metals dissolve in ammonia to give a deep blue solution which is conducting in nature.
M+(x+y)NH3→[M(NH3)x]2++2[e(NH3)y]-
Which of the following is not true about the solutions of alkali metals in liquid ammonia?

Options:
A The blue colour is due to ammoniated electron
B The solution is paramagnetic
C The blue colour changes to brown on standing
D In concentrated solution blue colour changes to bronze and becomes diamagnetic

The correct answer is:
The blue colour changes to brown on standing

Solution:
On standing is slowly liberates hydrogen resulting in formation of amide.
M(am)++e(am)-+NH3(l)→MNH2(am)+12H2(g)
Where 'am' denotes solution in ammonia.

Topic: Chemistry, s Block Elements, NEET
The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?

Options:
A $\mathrm{CsH}>\mathrm{RbH}>\mathrm{KH}>\mathrm{NaH}>\mathrm{LiH}$
B $\mathrm{KH}>\mathrm{NaH}>\mathrm{LiH}>\mathrm{CsH}>\mathrm{RbH}$
C $\mathrm{NaH}>\mathrm{LiH}>\mathrm{KH}>\mathrm{RbH}>\mathrm{CsH}$
D $\mathrm{LiH}>\mathrm{NaH}>\mathrm{KH}>\mathrm{RbH}>\mathrm{CsH}$

The correct answer is:
$\mathrm{LiH}>\mathrm{NaH}>\mathrm{KH}>\mathrm{RbH}>\mathrm{CsH}$

Solution:
Key Idea : Small anion forms stable compounds with small cation.
The thermal stability of alkali metal hydrides decreases as :
$$
\mathrm{LiH}>\mathrm{NaH}>\mathrm{KH}>\mathrm{RbH}>\mathrm{CsH}
$$
because the size of cation increases as :
$$
\mathrm{Li}^{+} < \mathrm{Na}^{+} < \mathrm{K}^{+} < \mathrm{Rb}^{+} < \mathrm{Cs}^{+}
$$

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET, NEET 2008 (Screening)
The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?

Options:
A NaH > LiH > KH > RbH > CsH
B LiH > NaH > KH > RbH > CsH
C CsH > RbH > KH > NaH > LiH
D KH > NaH > LiH > CsH > RbH

The correct answer is:
LiH > NaH > KH > RbH > CsH

Solution:
The alkali metal hydride stability ∝ lattice energy
On moving top to bottom the lattice energy decreases hence, the thermal stability of hydrides decreases.

Topic: Chemistry, s Block Elements, NEET
The alkaloid cocaine is obtained from

Options:
A Flowers
B Shoot
C Leaf
D None of the above

The correct answer is:
Leaf

Solution:
Cocaine is obtained from the leaf. The leaves are generally chewed with lime. Cocaine is extracted from the leaves and young twigs of the South American shrub Erythroxylon coca. Cocaine is used as a local anesthetic and stimulant. The bad effects are lack of sleep, loss of appetite and hallucination which ultimately lead to damaged mental functions and insanity. The misuse may also produce severe headache, convulsion, or death due to cardiovascular or respiratory failure.

Topic: Biology, Human Health and Diseases, NEET
The alkane that can be oxidized to the corresponding alcohol by $\mathrm{KMnO}_4$ as per the equation
is, when:

Options:
A $\mathrm{R}_1=\mathrm{H} ; \mathrm{R}_2=\mathrm{H} ; \mathrm{R}_3=\mathrm{H}$
B $\mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{CH}_3 ; \mathrm{R}_3=\mathrm{CH}_3$
C $\mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R} 2=\mathrm{H} ; \mathrm{R}_3=\mathrm{H}$
D $\mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{CH}_3 ; \mathrm{R}_3=\mathrm{H}$

The correct answer is:
$\mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{CH}_3 ; \mathrm{R}_3=\mathrm{CH}_3$

Solution:
Generally alkanes resist oxidation but alkane with tertiary H atom(s) can be oxidised to corresponding alcohols by $\mathrm{KMnO}_4$
$\therefore \mathrm{R}_1 \Rightarrow \mathrm{CH}_3 \quad \mathrm{R}_2 \Rightarrow \mathrm{CH}_3 \quad \mathrm{R}_3 \Rightarrow \mathrm{CH}_3$

Topic: Chemistry, Hydrocarbons, NEET, NEET 2024 (Re-NEET)
The alkane that gives only one mono-chloro product on chlorination with $\mathrm{Cl}_2$ in presence of diffused sunlight is

Options:
A 2, 2-dimethylbutane
B neopentane
C $n$-pentane
D isopentane

The correct answer is:
neopentane

Solution:
Key Idea Alkanes which contain all equivalent hydrogen atoms forms only one monochloro derivative on halogenation.
equivalent hydrogen atoms. So, it will give only one monochloro derivative on halogenation.

Topic: Chemistry, Hydrocarbons, NEET, NEET 2019 (Odisha)
The alkene C6H10 producing OHC(CH2)4CHO on ozonolysis is:

Options:
A Hexene-1
B Hexene-3
C Cyclohexene
D 1-Methylcyclohexene

The correct answer is:
Cyclohexene

Solution:
Since the alkene (C6H10) on ozonolysis gives a dialdehyde six carbon containing compound therefore, the alkene must be cyclohexene.

Topic: Chemistry, Hydrocarbons, NEET
The alkene that exhibits geometrical isomerism is:

Options:
A 2–methyl propene
B 2–butene
C 2–methyl–2–butene
D propene

The correct answer is:
2–butene

Solution:
Here 2–butene can show geometrical isomerism as follows

Rest all alkenes are symmetrical so they cannot show geometrical isomerism.

Topic: Chemistry, General Organic Chemistry, NEET
The allele which is unable to express its effect in the presence of another is called

Options:
A Codominant
B Supplementary
C Complementary
D Recessive

The correct answer is:
Recessive

Solution:
The allele which cannot impress its effect in the hybrid or in the presence of dominant allele is termed as recessive. It is denoted by a small letter.

Topic: Biology, Principles of Inheritance and Variation, NEET
The alpha and beta cells are found in

Options:
A Islets of Langerhans
B Pancreatic duct
C Accessory pancreatic duct
D Pancreatic acini

The correct answer is:
Islets of Langerhans

Solution:
Islets of Langerhans is endocrine part of pancreas which contains alpha cells, beta cells and delta cells. Pancreatic acini cells secrete pancreatic enzymes. The ducts carry the secretions.

Topic: Biology, Chemical Coordination and Integration, NEET
The Amazon rainforest is being cut and cleared for cultivating _____ or for conversion to ______for raising beef cattle.

Options:
A tobacco; grassland
B grassland; barren land
C soyabeans; grassland
D grassland; soyabean

The correct answer is:
soyabeans; grassland

Solution:
Amazon is a tropical rainforest in the Amazon biome of South America. It is known for its diversity in flora and fauna. It is facing deforestation and cleared land is used for cultivating soyabeans or converted to grassland for raising beef cattle. Interventions are urgently needed to prevent a large-scale, irreversible ecological disaster.

Topic: Biology, Biodiversity and its Conservation, NEET
The amino acid attaches to the tRNA at its:

Options:
A 5′ – end
B 3′ – end
C Anticodon site
D DHU loop

The correct answer is:
3′ – end

Solution:
The amino acid attaches to the tRNA at its 3′ – end which is the anticodon loop.

Topic: Biology, Molecular Basis of Inheritance, NEET
The amino acid coded by 3 codons is

Options:
A proline
B isoleucine
C tryptophan
D serine

The correct answer is:
isoleucine

Solution:
Since genetic code is degenerate in nature, one amino acid can be coded by more than one codon. Amino acid Isoleucine is coded by three codons, AUU, AUC, AUA. Tryptophan is coded by UGG a single codon and serine is coded by six codons UCU, UCA, UCC, UCG, AGC and AGU. Four codons CCU, CCC, CCA and CCG codes for proline.

Topic: Biology, Molecular Basis of Inheritance, NEET
The 'amino acid derivative' among the following hormone is

Options:
A insulin
B epinephrine
C estradiol
D testosterone

The correct answer is:
epinephrine

Solution:
The adrenal gland consists of an outer part known as the adrenal cortex and inner part adrenal medulla. Adrenal cortex secretes glucocorticoids, mineralocorticoids and sex corticoids. The medulla secretes hormones like epinephrine and nor-epinephrine. These are emergency hormones or hormones of stress. These are catecholamines. These are amino acid derivatives.

Topic: Biology, Chemical Coordination and Integration, NEET
The amino acid found only in bacterial and blue-green algae is

Options:
A methionine
B diamino-pimelic acid
C aspartic acid
D glutamic acid

The correct answer is:
diamino-pimelic acid

Solution:
Diaminopimelic acid (DAP) is an amino acid, a carboxy derivative of lysine. It is characteristically present in the cell walls of some gram-negative bacteria within the peptide linkages of NAM-NAG.

Topic: Biology, Cell - The Unit of Life, NEET
The amino acid in which R group is -CH2â CH2â COOH is

Options:
A aspartic acid
B glutamic acid
C valine
D threonine

The correct answer is:
glutamic acid

Solution:
Amino acid contain a variable part 'R' due to which different types of amino acids are seen. This R can any aliphatic or aromatic chain. If R contains COOH then such amino acids are acidic amino acids. Examples are Glutamic and Aspartic acids. In Glutamic acids, R is –CH2– CH2– CH2– COOH while in Aspartic acid R is – CH2– COOH .

Topic: Chemistry, Biomolecules, NEET
The amino acid substitution of Val for Glu in Hemoglobin S results in aggregation of the protein because of ___________ interactions between molecules.

Options:
A covalent
B disulfide
C hydrogen bonding
D hydrophobic

The correct answer is:
hydrophobic

Solution:
The amino acid substitution of Val for Glu in Hemoglobin S results in aggregation of abnormal hemoglobin because the hemoglobin becomes less soluble. The decreased oxygen concentration makes the hemoblobin to polymerize into crystals and this distorts the red blood cells into sickle shape. Replacing the amino acid glutamic acid with the less polar amino acid valine at the sixth position of the beta-chain favors a hydrophobic interaction in the hemoglobin.

Topic: Chemistry, Biomolecules, NEET
The amino acid tryptophan is the precursor for the synthesis of:

Options:
A Melatonin and Serotonin
B Thyroxine and Triiodothyronine
C Estrogen and Progesterone
D Cortisol and Cortisone

The correct answer is:
Melatonin and Serotonin

Solution:
Amino acid tryptophan is the precursor for the synthesis of melatonin and serotonin. These are neurotransmitters derived from the amino acid tryptophan. Within the pineal gland, serotonin is acetylated and then methylated to yield melatonin.

Topic: Biology, Chemical Coordination and Integration, NEET, NEET 2016 (Phase 1)
The ammeter reading in the given circuit of Fig. is -

Options:
A 1532 A
B 1433Â A
C 1733Â A
D 1531A

The correct answer is:
1532 A

Solution:
Eeq=3Ã1+6Ã21+2=5V, req=2Ã12+1=23Î©
I=510+2/3=1532 A

Topic: Physics, Current Electricity, NEET
The ammonia (NH3) released on quantitative reaction of 0.6 g urea (NH2CONH2) with sodium hydroxide (NaOH) can be neutralized by

Options:
A 200 ml of 0.4 N HCl
B 200 ml of 0.2 N HCl
C 100 ml of 0.1 N HCl
D 100 ml of 0.2 N HCl

The correct answer is:
100 ml of 0.2 N HCl

Solution:
2Ãmoles of NH3 = moles of urea
moles of NH3= moles of HCl
100Ã0.21000= moles of HCl =0.02 mole of HCl

Topic: Chemistry, General Organic Chemistry, NEET
The amnion of mammalian embryo is derived from

Options:
A Mesoderm and Trophoblast
B Endoderm and Mesoderm
C Ectoderm and Mesoderm
D Ectoderm and Endoderm

The correct answer is:
Ectoderm and Mesoderm

Solution:
Amnion, in reptiles, birds, and mammals, is a membrane forming a fluid-filled cavity (the amniotic sac) that encloses the embryo. The amniotic sac and the fluid it contains are sometimes referred to as the bag of waters.
In development, the amnion arises by the folding of a mass of extra-embryonic tissue called the somatopleure. Lined with ectoderm and covered with mesoderm (both are germ layers), the amnion contains a thin, transparent fluid in which the embryo is suspended, thus providing a cushion against mechanical injury. The amnion also provides protection against fluid loss from the embryo itself and against tissue adhesions.

Topic: Biology, Human Reproduction, NEET, NEET 2018