datavorous/entrance-exam-dataset huggingface dataset:
Describe the shapes of BF₃ and BH₄⁻.

Options:
A BF₃: Trigonal Planar, BH₄⁻: Tetrahedral
B BF₃: Tetrahedral, BH₄⁻: Trigonal Planar
C BF₃: Trigonal Pyramidal, BH₄⁻: Tetrahedral
D BF₃: Tetrahedral, BH₄⁻: Trigonal Pyramidal

The correct answer is:
BF₃: Trigonal Planar, BH₄⁻: Tetrahedral

Solution:
Correct Option is : (A)
BF₃: Trigonal Planar, BH₄⁻: Tetrahedral

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Describe the term D- and L- configuration used for amino acids.

Options:
A D-form means that the amino (−NH2) group is present towards the right hand side whereas L-form shows the presence of the (−NH2) group on the left hand side.
B D- and L-configuration indicate the optical activity of amino acids.
C D- and L-configuration refer to the spatial arrangement of atoms around the chiral carbon in amino acids.
D D- and L-configuration specify the acidity or basicity of amino acids.

The correct answer is:
D-form means that the amino (−NH2) group is present towards the right hand side whereas L-form shows the presence of the (−NH2) group on the left hand side.

Solution:
Correct Option is : (A)
D-form means that the amino (−NH2) group is present towards the right hand side whereas L-form shows the presence of the (−NH2) group on the left hand side.

Topic: Chemistry, Biomolecules, NEET
Describe two important uses of caustic soda (sodium hydroxide).

Options:
A Used as a food preservative and in toothpaste production.
B Utilized in the production of paper and textiles, and as a drain cleaner.
C Employed in the production of fireworks and as a fuel additive.
D Used in the production of glass and as a fertilizer.

The correct answer is:
Utilized in the production of paper and textiles, and as a drain cleaner.

Solution:
Correct Option is : (B)
Utilized in the production of paper and textiles, and as a drain cleaner.

Topic: Chemistry, s Block Elements, NEET
Describe two important uses of quicklime (calcium oxide).

Options:
A Used as a food preservative and in the production of glass.
B Utilized in the production of cement and in water treatment processes.
C Employed in the production of fireworks and as a cleaning agent.
D Used in the production of textiles and as a fuel in rockets.

The correct answer is:
Utilized in the production of cement and in water treatment processes.

Solution:
Correct Option is : (B)
Utilized in the production of cement and in water treatment processes.

Topic: Chemistry, s Block Elements, NEET
Describe two important uses of sodium carbonate.

Options:
A Used in the production of explosives and as a fuel in rockets.
B Employed in baking soda production and as a cleaning agent.
C Utilized in the production of fertilizer and as a food sweetener.
D Used in the production of glass and as a fuel additive.

The correct answer is:
Employed in baking soda production and as a cleaning agent.

Solution:
Correct Option is : (B)
Employed in baking soda production and as a cleaning agent.

Topic: Chemistry, s Block Elements, NEET
Desert plants are generally

Options:
A Viviparous
B Succulent
C Herbaceous
D Heterophyllus

The correct answer is:
Succulent

Solution:
Succulent plants are fleshy xerophytes, which can grow in low water level areas (desert). That is why they are called desert plants.

Topic: Biology, Organisms and Populations, NEET
Deserts, grasslands, forests and tundra are the examples of:

Options:
A Biomes
B Biogeographical regions
C Ecosystems
D Biospheres

The correct answer is:
Biomes

Solution:
Group of all ecosystem present in a large geographical area having similar climatic condition is called as biome. Deserts, grasslands, forests and tundra are all biomes and they occupy large geographical area having a specific set of characteristics.

Topic: Biology, Organisms and Populations, NEET
Deserts, rain forests, mangroves coral reefs, wetlands, estuaries and alpine meadows are an example of:

Options:
A Genetic diversity
B Species diversity
C Ecological diversity
D All of the above

The correct answer is:
Ecological diversity

Solution:
When the diversity in organisms at species level is termed as species diversity.
A particular species displaying variations at the genetic level at different regions are distribution comes under genetic diversity.
If a particular area/region shows the variation in the ecosystem will be included in ecological diversity. India has more ecological diversity than a northern nation like Finland, Norway. It also includes rain forests, mangroves coral reefs, wetlands, deserts, estuaries and alpine meadows.

Topic: Biology, Biodiversity and its Conservation, NEET
Despite their - I effect, halogens are o- and p-directing in haloarenes. Explain.

Options:
A Halogens have lone pairs of electrons that participate in inductive effect and direct incoming groups to o- and p-positions.
B Halogens have a greater electron density, which makes them o- and p-directing.
C Halogens attached to benzene rings exert – I and +R effect. +R effect dominates – I effect and increases the electron density at ortho and para positions of the benzene ring with respect to halogens
D Halogens withdraw electron density from the benzene ring, leading to o- and p-directing effects.

The correct answer is:
Halogens attached to benzene rings exert – I and +R effect. +R effect dominates – I effect and increases the electron density at ortho and para positions of the benzene ring with respect to halogens

Solution:
Correct Option is : (C)
Halogens attached to benzene rings exert – I and +R effect. +R effect dominates – I effect and increases the electron density at ortho and para positions of the benzene ring with respect to halogens

Topic: Chemistry, Hydrocarbons, NEET
Destruction of chlorophyll, premature falling of leaves and yellowing of leaf is caused due to the excess amounts of _______ in the atmosphere.

Options:
A CO2
B SO2
C CO
D Fly ash

The correct answer is:
SO2

Solution:
Plants are sensitive to sulphur dioxide and they are affected by it both directly and indirectly. The direct effects may be acute or chronic, depending on the duration and intensity of the exposure. Sulphur dioxide inhibits photosynthesis by disrupting the photosynthetic mechanism.

Topic: Biology, Environmental Issues, NEET
Destruction of the anterior horn cells of the spinal cord would result in loss of:

Options:
A Voluntary motor impulses
B Commissural impulses
C Integrating impulses
D Sensory impulses

The correct answer is:
Voluntary motor impulses

Solution:
The anterior horn cells of the spinal cord consist of motor neurons. These neurons are efferent in nature. They are responsible for carrying voluntary motor impulses from the brain to the organs. Thus, destruction to the anterior horns would result in loss of voluntary motor impulses.

Topic: Biology, Neural Control and Coordination, NEET, NEET 2015 (Phase 2)
Detailed membrane structure was studied only after the advent of ________

Options:
A electron microscope in 1960
B electron microscope in 1950
C cell staining,1960
D cell staining, 1950

The correct answer is:
electron microscope in 1950

Solution:
The detailed structure of the membrane was studied only after the advent of the electron microscope in the year 1950.

Topic: Biology, Cell - The Unit of Life, NEET
Determine A and B from the following road map reaction:

Options:
A C6H5OH,C6H5BF3
B C6H5N2Cl and C6H5F
C C6H5N2Cl and C6H5Cl
D C6H5N2Cl and C6H5OH

The correct answer is:
C6H5N2Cl and C6H5F

Solution:
Benzenediazonium chloride is prepared by the reaction of aniline with nitrous acid at 273-278 K. Nitrous acid is produced in the reaction mixture by the reaction of sodium nitrite with hydrochloric acid.

When benzene diazonium chloride is treated with sodium fluoroborate, benzene diazonium fluoroborate is precipitated which on heating decomposes to yield benzyl fluoride.

Topic: Chemistry, Amines, NEET
Determine from the given data the Q-value of the following reaction $C_{6}^{12}$+$C_{6}^{12}$ → $Ne_{10}^{20}+He_{2}^{4}$

Options:
A 2.31 Mev
B 4.62 Mev
C -4.62 Mev
D -2.31 Mev

The correct answer is:
-4.62 Mev

Solution:
Correct Option is : (C)
-4.62 Mev

Topic: Chemistry, Nuclear Physics, NEET
Determine from the given data the Q-value of the following reaction $H_{1}^{1}$+$H_{1}^{3}$ → $H_{1}^{2}+H_{1}^{2}$

Options:
A 2.17 Mev
B 4.03 Mev
C -4.03 Mev
D -2.17 Mev

The correct answer is:
-4.03 Mev

Solution:
Correct Option is : (C)
-4.03 Mev

Topic: Chemistry, Nuclear Physics, NEET
Determine the amount of CaCl2(i = 2.47) dissolved in 2.5 litre of water such that its osmotic pressure is 0.75 atm at 27° C.

Options:
A 0.03 mol of CaCl2
B 0.32 mol of CaCl2
C 0.13 mol of CaCl2
D 0.44 mol of CaCl2

The correct answer is:
0.03 mol of CaCl2

Solution:
Correct Option is : (A)
0.03 mol of CaCl2

Topic: Chemistry, Solutions, NEET
Determine the animal that has blind sac body plan and intracellular as well as extracellular digestion.

Options:
A Meandrina
B Taenia
C Psittacula
D Limulus

The correct answer is:
Meandrina

Solution:
Blind sac body plan and intracellular as well as extracellular digestion is seen in Cnidaria. Meandrina belongs to Phylum Cnidaria. It shows radial symmetry. Taenia (tapeworm), Psittacula (parrot) and Limulus (king crab) them show bilateral symmetry.

Topic: Biology, Animal Kingdom, NEET
Determine the correct sequence of the process of nutrition in a human being.

A. Mastication of food and formation of bolus

B. Production of chyme

C. Deglutition

D. Passage of unabsorbed, undigested substances to the caecum

E. Digestion in the most coiled part of alimentary canal

Options:
A A, C, E, B, D
B A, E, C, B, D
C A, C, B, E, D
D A, B, C, E, D

The correct answer is:
A, C, B, E, D

Solution:
The steps involved in process of digestion of food are as follows:
1. Mastication of food in the mouth by teeth and formation of bolus. 2. Deglutition i.e. passage of the bolus through the oesophagus with the help of peristaltic movements of oesophagus. 3. Entry of food into the stomach. Grinding of food by the muscular wall of stomach and its mixing with gastric juices leading to formation of chyme. 4. Passage of food and digestion of food in the small intestine which is the most coiled part of alimentary canal. 5. Passage of unabsorbed and undigested food in the caecum of the large intestine.

Topic: Biology, Digestion and Absorption, NEET
Determine the current ${{I}_{1}}$ in the network shown in Fig.
.

Options:
A 2.5A
B 5A
C 7.5A
D 3.33A

The correct answer is:
2.5A

Solution:
Correct Option is : (A)
2.5A

Topic: Chemistry, Current Electricity, NEET
Determine the current in branch AB of the network shown in Fig

Options:
A 10/17 A
B 2/17 A
C 9/17 A
D 4/17 A

The correct answer is:
4/17 A

Solution:
Correct Option is : (D)
4/17 A

Topic: Chemistry, Current Electricity, NEET
Determine the current in branch BC of the network shown in Fig

Options:
A 10/17 A
B 6/17 A
C 9/17 A
D 4/17 A

The correct answer is:
6/17 A

Solution:
Correct Option is : (B)
6/17 A

Topic: Chemistry, Current Electricity, NEET
Determine the degree of association (polymerization) for the reaction in aqueous solution

6 HCHO ⇌ C 6 H 1 2 O 6

If observed (mean) molar mass of HCHO and C 6 H 12 O 6 is 150:

Options:
A 0.50
B 0.833
C 0.90
D 0.96

The correct answer is:
0.96

Solution:
6 HCHO ⇌ C 6 H 1 2 O 6 Conc. at equilibrium C 1 - α C α 6
α= M Th − M obs ( n−1 ) M obs =   30−150 [ 1 6 −1 ]150 =   120 5 6 ×150 =0.96

Topic: Chemistry, Chemical Equilibrium, NEET
.
Determine the degree of ionization and pH of a 0.05M of ammonia solution. The ionization constant of ammonia can be taken from Table 7.7.

Options:
A Degree of ionization 0.018%, pH = 11
B Degree of ionization 0.2%, pH = 2
C Degree of ionization 5%, pH = 8
D Degree of ionization 0.018%, pH = 7

The correct answer is:
Degree of ionization 0.018%, pH = 11

Solution:
Correct Option is : (A)
Degree of ionization 0.018%, pH = 11

Topic: Chemistry, Ionic Equilibrium, NEET
Determine the molecular formula of an organic compound containing 49.3% carbon 6.84% hydrogen and its vapour density is 73.

Options:
A C3H5O2
B C6H10O4
C C3H10O2
D C4H10O2

The correct answer is:
C6H10O4

Solution:
Element	Atomic mass	Simple ratio

C	12	49.3 12 =4.1	4.1 2.7 =1.5;â1.5Ã2=3

H	1	6.84 1 =6.84	6.84 2.7 =2.5Ã2.5

O	16	43.86 16 =2.7	2.7 2.7 =1Ã2=2

Empirical formula = C3H5O2
Empirical Formula wt. =12Ã3+1Ã5+16Ã2=73
Molecular wt =V.D.Ã2=73Ã2=146
n=M.wtE.F.wt=14673=2
Molecular formula =E.Fn=(C3H5O2)2=C6H10O4.

Topic: Chemistry, General Organic Chemistry, NEET
Determine the molecular formula of the compound having cubic structure. which is made from X and Y , where X atoms are at the corners of the cube and Y at the face centres of the cube.

Options:
A XY2
B XY3
C X2Y
D X3Y

The correct answer is:
XY3

Solution:
X atoms are at eight corners of the cube. Therefore, the number of X atoms in the unit cell =88=1 .
Y atoms are at the face centre of six faces. Therefore, its share in the unit cell =62=3 . The formula is XY3 .

Topic: Chemistry, Solid State, NEET
Determine the organelle that will regulate the osmotic expansion of a cell depending on the surrounding water potential.

Options:
A mitochondria
B vacuoles
C plastids
D ribosomes

The correct answer is:
vacuoles

Solution:
Vacuoles are large organelles found in plant cells. Vacuoles have a membrane, tonoplast, that surrounds it. This organelle help plant cell with storage of plant products and also water. Since it can store water, it provides structural support to the cell and also regulates the osmotic expansion and contraction.

Topic: Biology, Cell - The Unit of Life, NEET
Determine the osmotic pressure of a solution prepared by dissolving 25 mg of K2SO4in 2 litre of water at 25° C, assuming that it is completely dissociated.

Options:
A 11.21 x 10-3atm
B 9.68 x 10-3atm
C 7.47 x 10-3atm
D 5.27 x 10-3atm

The correct answer is:
5.27 x 10-3atm

Solution:
Correct Option is : (D)
5.27 x 10-3atm

Topic: Chemistry, Solutions, NEET
Determine the oxidation number of the underlined atom in NH 4 6 Mo 7 ¯ O 2 4

Options:
A -5
B +6
C -3
D -1

The correct answer is:
+6

Solution:
Let the oxidation number of Mo be âaâ , then
(1 Ã 6) +(7 Ã a) + (24 Ã (-2)) = 0
Hence, a = +6

Topic: Chemistry, Redox Reactions, NEET
Determine the oxidation number of the underlined atom in Rb 4 Na H V 1 0 ¯ O 2 8

Options:
A +9
B -4
C 0
D +5

The correct answer is:
+5

Solution:
Let the oxidation number of V be âaâ , then
(4 Ã 1) + 1 + [1 +(10 Ã a) + (28 Ã (-2))] = 0
Hence, a = +5

Topic: Chemistry, Redox Reactions, NEET
Determine the oxidation number of Xe atom in Ba2XeO6

Options:
A +8
B -8
C +5
D -7

The correct answer is:
+8

Solution:
Let the oxidation number of Xe be âaâ , then
2 Ã 2 + a + 6 Ã (-2) = 0
Hence, a = + 8

Topic: Chemistry, Redox Reactions, NEET
Determine the process that will occur based on the given information regarding two adjacent cells.

Parameters	Cell X	Cell Y

Osmotic pressure	8 units	12units

Turgor pressure	6units	8units

Options:
A Water will move from Cell Y to X
B Water will show no movement.
C Water will move from Cell X to Y
D Solute will move across both the cells.

The correct answer is:
Water will move from Cell X to Y

Solution:
In such problems, we must calculate the diffusion pressure deficit (DPD) of the cell A and B. Formula: DPD = OP – TP . It is also called suction pressure- net pressure causing water to enter the cell.
DPD of cell X = 8 – 6 = 2 . DPD of cell Y = 12 – 8 = 4 . Water will always move from a cell with lesser DPD to a cell with higher DPD value. That means the movement of water will occur from cell X to cell Y.

Topic: Biology, Transport in Plants, NEET
Determine the relationship between the two compounds:

Options:
A Functional Group isomers
B Metamers
C tautomers
D Position isomers

The correct answer is:
Metamers

Solution:
In organic chemistry, compounds having the same molecular formula but different number of carbon atoms (alkyl groups) on either side of functional group (i.e., -O-,-S-, -NH-, -C(=O)-) are called metamers and the phenomenon is called metamerism.

Topic: Chemistry, General Organic Chemistry, NEET
Determine the rms potential drops across the three elements of the circuit

Options:
A 230V
B 5V
C 0V
D 220V

The correct answer is:
0V

Solution:
Correct Option is : (C)
0V

Topic: Chemistry, Alternating Current, NEET
Determine the sequence for line of descent in human evolution that is most accepted one.

Options:
A Australopithecus → Homo habilis → Homo sapiens → Home erectus
B Ramapithecus → Neanderthal Man → Cro Magnon Man → Homo erectus → Homo sapiens
C Dryopithecus → Australopithecus → Homo habilis → Home erectus → Home sapiens
D Dryopithecus → Homo erectus → Java Man → Home habilis → Australopithecus

The correct answer is:
Dryopithecus → Australopithecus → Homo habilis → Home erectus → Home sapiens

Solution:
About 15 mya, primates called Dryopithecus and Ramapithecus were existing. They were hairy and walked like gorillas and chimpanzees. Two mya, Australopithecines probably lived in East African grasslands. They hunted with stone weapons but essentially ate fruit. The first human-like being the hominid was called Homo habilis. The brain capacities were between 650-800cc. They probably did not eat meat. Fossils discovered in Java in 1891 revealed the next stage, i.e., Homo erectus about 1.5 mya. Homo erectus had a large brain around 900cc. During ice age between 75,000-10,000 years ago modern Homo sapiens arose

Topic: Biology, Evolution, NEET
Determine the solubilities of silver chromate, barium chromate, ferric hydroxide, lead chloride and mercurous iodide at 298 K from their solubility product constants given in Table 7.9. Determine also the molarities of individual ions.

Options:
A Ag2CrO41.1 × 10-3M, BaCrO41.0 × 10-M, Fe(OH)31.0 × 10-38M, PbCl21.0 × 10-5M, Hg2I21.0 × 10-28M
B Ag2CrO41.1 × 10-12M, BaCrO41.0 × 10-6M, Fe(OH)31.0 × 10-16M, PbCl21.0 × 10-8M, Hg2I21.0 × 10-20M
C Ag2CrO41.1 × 10-4M, BaCrO41.0 × 10-8M, Fe(OH)31.0 × 10-30M, PbCl21.0 × 10-4M, Hg2I21.0 × 10-22M
D Ag2CrO41.1 × 10-6M, BaCrO41.0 × 10-12M, Fe(OH)31.0 × 10-22M, PbCl21.0 × 10-6M, Hg2I21.0 × 10-18M

The correct answer is:
Ag2CrO41.1 × 10-3M, BaCrO41.0 × 10-M, Fe(OH)31.0 × 10-38M, PbCl21.0 × 10-5M, Hg2I21.0 × 10-28M

Solution:
Correct Option is : (A)
Ag2CrO41.1 × 10-3M, BaCrO41.0 × 10-M, Fe(OH)31.0 × 10-38M, PbCl21.0 × 10-5M, Hg2I21.0 × 10-28M

Topic: Chemistry, Ionic Equilibrium, NEET
Determine the solubility of CrOH3 in mol L-1, if its Ksp is 2.7Ã10-31 M4.

Options:
A 1×10-8
B 8×10-8
C 1.1×10-8
D 0.18×10-8

The correct answer is:
1×10-8

Solution:
The given compound will dissociate as

CrOH3s→Cr+3aq+3OH-aqs3s
Writing the expression for the solubility product,

Ksp=Cr3+OH-3=s×3s3=27s4
s=Ksp274s=2.7×10-31274s=1.0×10-8 mol L-1

Topic: Chemistry, Ionic Equilibrium, NEET
Determine the solubility of silver chromate at 298 K given its Ksp value is 1.1 × 10-12.

Options:
A 6.5 × 10-5
B 2.4 × 10-2
C 3.6 × 10-3
D 8.9 × 10-4

The correct answer is:
6.5 × 10-5

Solution:
Ag 2 CrO 4 â 2Ag + + CrO 4 2 - ; K sp = 1.1 Ã 10 - 12
S 2S S
K sp = Ag + 2 Â· CrO 4 2 -
Ksp = [2S]2 Â· [S] = 4S3
S3= Ksp4 = 1.1Ã10-124
â¹S=6.53Ã10-5

Topic: Chemistry, Ionic Equilibrium, NEET
Determine the stability order of given carbanions:

Options:
A i > ii > iii
B iiiÂ >Â iÂ >Â ii
C iiiÂ >Â iiÂ >Â i
D iiÂ >Â iiiÂ >Â i

The correct answer is:
i > ii > iii

Solution:
Tertiary carbanion is least stable, so iii is least stable. Primary Carbanion is most stable, so i is most stable.

Topic: Chemistry, General Organic Chemistry, NEET
Determine the stability order of given carbocations:

Options:
A i > ii
B ii > i
C iÂ =Â ii
D Cannot be predicted

The correct answer is:
i > ii

Solution:
Carbocation is not stable on double bonded carbon. so i > ii

Topic: Chemistry, General Organic Chemistry, NEET
Determine the statement that is not related to sporopollenin.

Options:
A The hard outer layer of pollen grain is called exine which is made up of sporopollenin.
B It is one of the most resistant organic material which is produced by endothecium.
C No enzyme is known yet which degrades sporopollenin.
D It can withstand high temperature and strong acid and alkali.

The correct answer is:
It is one of the most resistant organic material which is produced by endothecium.

Solution:
Pollen grains are generally spherical measuring about 25-50 micrometers in diameter. It has a prominent two-layered wall. The hard outer layer called the exine is made up of sporopollenin which is one of the most resistant organic material known. It can withstand high temperatures and strong acids and alkali. No enzyme that degrades sporopollenin is so far known. Sporopollenin is produced by tapetum.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Determine the total number of stereoisomers.

Options:
A 2
B 4
C 8
D 16

The correct answer is:
8

Solution:
N=chiral centreGI units=3
âTotal no. of stereoisomers =2n=8

Topic: Chemistry, General Organic Chemistry, NEET
Dettol is the mixture of:

Options:
A chloroxylenol and bithionol
B chloroxylenol and terpineol
C phenol and iodine
D terpineol and bithionol

The correct answer is:
chloroxylenol and terpineol

Solution:
Dettol is mixture of chloroxylenol and terpineol.

Topic: Chemistry, Chemistry in Everyday Life, NEET, NEET 2013 (Karnataka)
Deuteron is a bound state of a neutron and a proton with a binding energy B = 2.2 MeV. A γ -ray of energy E is aimed at a deuteron nucleus to try to break it into a (neutron + proton) such that the n and p move in the direction of the incident γ-ray. If E = B, show that this cannot happen. Hence calculate how much bigger than B must E be for such a process to happen

Options:
A $\frac{{{B}^{2}}}{m{{c}^{2}}}$
B $\frac{{{B}^{2}}}{2m{{c}^{2}}}$
C $\frac{{{B}^{2}}}{4m{{c}^{2}}}$
D $\frac{3{{B}^{2}}}{4m{{c}^{2}}}$

The correct answer is:
$\frac{{{B}^{2}}}{4m{{c}^{2}}}$

Solution:
Correct Option is : (C)
$\frac{{{B}^{2}}}{4m{{c}^{2}}}$

Topic: Chemistry, Nuclear Physics, NEET
Development of a gametophyte directly from the sporophyte tissue is called

Options:
A Apospory
B Apogamy
C Adventive embryony
D Parthenogenesis

The correct answer is:
Apospory

Solution:
Agamospermy (Gk. agamous-without marriage, Sperma-seed) is a mode of apomixis in which seeds are formed but are asexual in nature as the embryo develops directly without gametic fusion. It is commonly formed from a diploid nucellar cell (apospory) or megaspore mother cell (diplospory). When sporophytic cells of nucellus develop to form directly female gametophyte or embryo sac, it is known as apospory.
Adventive polyembryony is the formation of additional embryos from different parts of the ovule (other than egg of the embryo sac) like synergids, antipodal cells, nucellus, integuments, etc. (e.g., citrus, opuntia, Mangifera, trillium, onion, groundnut).
Apogamy (Gk. Apo-without, gamos-marriage) is the formation of sporophyte or embryo directly from cells of the gametophyte. In higher plants, only diploid apogamy is successful, that is, the gametophytic cell forming the sporophyte is diploid. In lower plants, haploid apogamy is equally successful.
The development of the egg cell without the process of fertilization to form an embryo is called parthenogenesis.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Development of embryo from gametophyte without the involvement of gamete is known as

Options:
A Apospory
B Apogamy
C Apomixis
D Aposporogamy

The correct answer is:
Apogamy

Solution:
The formation of an embryo from any cell of the embryosac except the gamete or the origin of the embryo from either synergids or antipodal cells of the embryosac is called as apogamy. Both apogamy and apospory are sometimes described as abnormalities in the life cycle of a plant. It is commonly assumed that if one of these phenomena occurs in a life cycle, it must be followed by the other one. Apogamy is a related term that has had various meanings over time. In plants with independent gametophytes (notably ferns), the term is still used interchangeably with "apomixis", and both refer to the formation of sporophytes by parthenogenesis of gametophyte cells.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET