datavorous/entrance-exam-dataset huggingface dataset:
Which part of the plant structure develops into the multicellular female gametophyte?

Options:
A Microsporangia
B Megasporangia
C Nucellus
D Megaspore mother cell

The correct answer is:
Megaspore mother cell

Solution:
The megaspore mother cell divides meiotically to form four megaspores, one of which develops into the multicellular female gametophyte that bears two or more archegonia or female sex organs.

Topic: Biology, Plant Kingdom, NEET
Which part of the poppy plant is used to obtain the drug "Smack"?

Options:
A Roots
B Latex
C Flowers
D Leaves

The correct answer is:
Latex

Solution:
The latex of the poppy plant Papaver somniferum is used to obtain heroin, which is commonly known as 'Smack'. It is a white crystalline, odourless, bitter compound which is chemically called diacetylmorphine (it is formed due to the acetylation of morphine). It acts as a depressant and slows down action of the nervous system.

Topic: Biology, Human Health and Diseases, NEET, NEET 2018
Which part of the skull is connected with the vertebral column?

Options:
A Temporal bone
B Occipital condyles
C Parietal bone
D Mandible.

The correct answer is:
Occipital condyles

Solution:
The skull region articulates with the superior region of the vertebral column with the help of two occipital condyles (dicondylic skull).

Topic: Biology, Locomotion and Movement, NEET
Which part of the tobacco plant is infected by Meloidogyne incognita?

Options:
A Flower
B Leaf
C Stem
D Root

The correct answer is:
Root

Solution:
Meloidogyne incognita infects the root of a tobacco plant. Meloidogyne incognita is a species of nematodes(roundworms). It is commonly called the "southern root-knot nematode" . This parasitic roundworm has worldwide distribution and numerous hosts. It prefers to attack the root of its host plant

Topic: Biology, Biotechnology and Its Applications, NEET, NEET 2016 (Phase 1)
Which part would be most suitable for raising virus-free plants for micropropagation?

Options:
A Bark
B Vascular tissue
C Meristem
D Node

The correct answer is:
Meristem

Solution:
Generally, it is believed that actively growing regions of plants (i.e., shoot apex and root apex) do not have viruses. Due to this big advantage, these regions are used in the production of virus free plants through meristem culture technique. In meristem culture explants are taken from shoot apex or shoot apical meristem. These explants are cultured on a medium containing more cytokinin than auxin hormone. Thus, meristem culture involves the development of an already existing shoot apical meristem and subsequently, the regeneration of adventitious root from the developed shoots.

Topic: Biology, Anatomy of Flowering Plants, NEET, NEET 2012 (Screening)
Which part would be most suitable for raising virus-free plants for micropropagation?

Options:
A Bark
B Vascular tissue
C Meristem
D Node

The correct answer is:
Meristem

Solution:
Since plant meristems are free of infections, and are actively dividing they can be used for virus-free plants for micropropagation.

Topic: Biology, Reproduction in Organisms, NEET
Which particle will have a minimum frequency of revolution when projected with the same velocity and perpendicular to a magnetic field?

Options:
A Li+
B Electron
C Proton
D He+

The correct answer is:
Li+

Solution:
Since, we know,
Frequency, υ=qB2πm υ ; ∝qm
In the given particles,
qm is a minimum for Li+.
∴ Li+ will have the minimum frequency.

Topic: Physics, Magnetic Effects of Current, NEET
Which parts of the nephrons are primarily involved in reabsorption?

Options:
A The renal tubule
B The Bowman's capsule
C The proximal convoluted tubule
D The Henle's loop

The correct answer is:
The proximal convoluted tubule

Solution:
The proximal convoluted tubule (PCT) is the major site of reabsorption and selective secretion in the nephrons.

Topic: Biology, Excretory Products and their Elimination, NEET
Which pathway is responsible for most of the water flow in the roots of plants?

Options:
A Apoplast pathway
B Symplast pathway
C Both equally
D Neither

The correct answer is:
Apoplast pathway

Solution:
Most of the water flow in the roots occurs via the apoplast pathway, as the cortical cells are loosely packed and offer no resistance to water movement.

Topic: Biology, Transport in Plants, NEET
Which Periods are mentioned as having a theoretical maximum number of 32 elements?

Options:
A Fifth and sixth Periods
B Third and fourth Periods
C Sixth and seventh Periods
D Second and third Periods

The correct answer is:
Sixth and seventh Periods

Solution:
Both the sixth and seventh Periods (lanthanoids and actinoids, respectively) would have a theoretical maximum of 32 elements based on quantum numbers.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which PGR could fit either growth promoting or inhibiting group?

Options:
A Gibberellic acid
B Kinetin
C Ethylene
D Indole-3-acetic acid

The correct answer is:
Ethylene

Solution:
Ethylene is a gaseous PGR that could fit either of the groups, but it is largely an inhibitor of growth activities.

Topic: Biology, Plant - Growth and Development, NEET
Which phase is the longest phase of the cell cycle?

Options:
A Interphase
B Mitotic phase
C Meiotic phase
D Both (B) and (C)

The correct answer is:
Interphase

Solution:
It is also known as resting phase because cell does not appears to divide and these phase also known as preparatory phase because cell prepare for division. It covered 95% of cell cycle .

Topic: Biology, Cell Cycle and Cell Division, NEET
Which phase is the period of cytoplasmic growth?

Options:
A G₂ phase
B Prophase
C S phase
D Metaphase

The correct answer is:
G₂ phase

Solution:
The G₂ phase is the period of cytoplasmic growth, where the cell prepares for cell division.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which phase occupies the maximum part of cell cycle?

Options:
A Mitotic phase
B Meiotic phase
C Interphase
D Cytokinesis

The correct answer is:
Interphase

Solution:
The sequence of events by which a cell duplicates its genome, synthesises the other constituents of the cell and eventually divides into two daughter cells is termed cell cycle.

A typical cell cycle comprises two major phases:

Interphase, which is the largest phase of the cell cycle (nearly 95%) and is the most active phase, biochemically, and physiologically.

Division phase, in which the cell actually divides to form the daughter cells.

Topic: Biology, Cell Cycle and Cell Division, NEET, NEET 2016 (Phase 2)
Which phase of the cell cycle do proteins are synthesized in preparation for mitosis?

Options:
A G₁ phase
B S phase
C G₂ phase
D M phase

The correct answer is:
G₂ phase

Solution:
During the G₂ phase, proteins are synthesized in preparation for mitosis while cell growth continues.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which phase of the cell cycle is referred to as the resting phase?

Options:
A G₁ phase
B S phase
C G₂ phase
D Interphase

The correct answer is:
Interphase

Solution:
The interphase is referred to as the resting phase, but it is the time during which the cell is preparing for division by undergoing both cell growth and DNA replication in an orderly manner.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which phase of the cell cycle marks the period during which DNA synthesis or replication takes place?

Options:
A G₁ phase
B S phase
C G₂ phase
D M phase

The correct answer is:
S phase

Solution:
The S phase, or synthesis phase, marks the period during which DNA replication takes place. The amount of DNA per cell doubles during this phase.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which phase transition does sublimation bypass?

Options:
A Solid to liquid
B Liquid to gas
C Solid to gas
D Gas to solid

The correct answer is:
Solid to liquid

Solution:
Sublimation bypasses the phase transition from solid to liquid, as the solid directly changes into a gas.

Topic: Chemistry, General Organic Chemistry, NEET
Which phenomenon is related to the epithem tissue in the tip of grass blades?

Options:
A Exudation
B Guttation
C Transpiration
D Bleeding

The correct answer is:
Guttation

Solution:
Effect of root pressure is also observable at night and early morning when evaporation is low, and excess water collects in the form of droplets around special openings of veins near the tip of grass blades and leaves of many herbaceous parts. Such water loss in its liquid phase from hydathodes is known as guttation. It occurs when rate of absorption is more and rate of transpiration is less. Epithem is a loose tissue under the hydathodes.

Topic: Biology, Transport in Plants, NEET
Which phenomenon made it possible to produce animal proteins in plants through rDNA technology?

Options:
A The human chromosome can replicate in bacterial cell
B The mechanism of gene regulation is identical in humans and bacteria
C Bacterial cell can carry out the RNA splicing reactions
D The genetic code is universal

The correct answer is:
The genetic code is universal

Solution:
Genetic engineering is the technique of changing the phenotype of an organism by altering the chemical properties of the genetic material. Genetic engineering is useful for manufacturing products like antibiotics, vaccines, enzymes, proteins, etc. When recombinant DNA is added to the host organisms the protein synthesis is carried out in the similar manner and the desired results are obtained. This is because the principles governing the process, the enzymes involved and the genetic code itself are all universal in nature.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Which physical property distinguishes alkenes from alkanes?

Options:
A Boiling point
B Melting point
C Solubility in water
D Odor

The correct answer is:
Solubility in water

Solution:
Alkenes differ from alkanes in their solubility in water, as they are generally insoluble in water due to their nonpolar nature, while alkanes have limited solubility because they are nonpolar as well.

Topic: Chemistry, Hydrocarbons, NEET
Which physical property is common to all alkynes?

Options:
A They are all liquids at room temperature.
B They are all colorless.
C They have a characteristic odor.
D They are denser than water.

The correct answer is:
They are all colorless.

Solution:
All alkynes share the common characteristic of being colorless.

Topic: Chemistry, Hydrocarbons, NEET
Which pigment/s is/are required for the mechanism of vision?

Options:
A Opsin
B Retinal
C Both opsin and retinal
D None of these

The correct answer is:
Both opsin and retinal

Solution:
The photosensitive compounds (photopigments) in the human eyes are composed of opsin (a protein) and retinal (an aldehyde of vitamin A). Light induces dissociation of the retinal from opsin resulting in changes in the structure of the opsin and potential differences are generated in the photoreceptor cells. This produces a signal that generates action potentials in the ganglion cells through the bipolar cells and the impulses are transmitted by the optic nerves to the visual cortex area of the brain, where the neural impulses are analyzed and the image formed on the retina is recognized.

Topic: Biology, Neural Control and Coordination, NEET
Which plant characteristic is associated with resistance to insect pests in cotton?

Options:
A Smooth leaves
B Hairy leaves
C Solid stems
D Nectar-rich flowers

The correct answer is:
Hairy leaves

Solution:
Hairy leaves in cotton are associated with resistance to insect pests, e.g, resistance to jassids.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Which plant did Mendel investigate during his experiments?

Options:
A Tomato plant
B Wheat plant
C Pea plant
D Corn plant

The correct answer is:
Pea plant

Solution:
Mendel investigated characters in the garden pea plant that were manifested as two opposing traits, e.g., tall or dwarf plants, yellow or green seeds.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which plant group showed vascular tissue with integumented megasporangium for the first time?

Options:
A Bryophyta
B Pteridophyta
C Gymnosperm
D Angiosperm

The correct answer is:
Gymnosperm

Solution:
Ovule is known as integumented megasporangium. Ovule forms seed after fertilization and first seed plants were gymnosperm hence ovule is seen for the first time in gymnosperm.

Topic: Biology, Plant Kingdom, NEET
Which plant has been used to study cytoplasmic streaming?

Options:
A Spirulina
B Hydrilla
C Chlorella
D Eichhornia

The correct answer is:
Hydrilla

Solution:
The cytoplasmic streaming is observed in cells of the Hydrilla leaf; the movement of chloroplast due to streaming is easily visible.

Topic: Biology, Transport in Plants, NEET
Which plant hormone is related to hastening the maturity period and germination of seeds?

Options:
A Auxin
B Gibberellin
C ABA
D Ethylene

The correct answer is:
Gibberellin

Solution:
Gibberellin cause seeds germination by activating vegetative growth of the embryo and mobilizing stored food reserve of the endosperm by promoting the synthesis of hydrolytic enzymes involved in the solubilisation of endosperm reserve. Spraying juvenile conifers with gibberellins hastens the maturity period, thus leading to early seed production.

Topic: Biology, Plant - Growth and Development, NEET
Which plant is generally called "terror of Bengal"?

Options:
A Water lettuce
B Eichhornia crassipes
C Hydrilla
D Vallisneria

The correct answer is:
Eichhornia crassipes

Solution:
Eichhornia crassipes, commonly known as water hyacinth is considered the terror of Bengal as it grows at a rapid rate over the surface of water. This plant was introduced in Bengal cause of its beautiful flower and leaf-shape. Although, it turned out to be a weed which drained the oxygen from water bodies leading to destruction of fish stock. In Bengal, it is called as 'blue devil' and in rest part of India, it is known as 'terror of Bengal'. Vallisneria is a group of freshwater aquatic submerged plant. Commonly called as eel grass and spreads by runners in water forming underwater meadows.
Hydrilla is a submerged aquatic plant native to Africa and Europe.

Topic: Biology, Environmental Issues, NEET
Which plants can help metabolize nitrogen oxide and assist in reducing photochemical smog?

Options:
A Sunflowers and daisies
B Oak, pine, and juniper trees
C Cacti and succulents
D Bamboo and palm trees

The correct answer is:
Oak, pine, and juniper trees

Solution:
Certain plants, such as oak, pine, and juniper trees, can metabolize nitrogen oxide and assist in reducing photochemical smog. Planting these tree species can help improve air quality in affected areas.

Topic: Chemistry, Environmental Chemistry, NEET
Which pleural membrane is in close contact with the thoracic lining?

Options:
A Inner pleural membrane
B Outer pleural membrane
C Both inner and outer pleural membranes are in close contact with the thoracic lining
D Neither inner nor outer pleural membrane is in close contact with the thoracic lining

The correct answer is:
Outer pleural membrane

Solution:
The outer pleural membrane is in close contact with the thoracic lining.

Topic: Biology, Breathing and Exchange of Gases, NEET
Which plot of $\ln k$ vs $\frac{1}{\mathrm{~T}}$ is consistent with Arrhenius equation?

Options:
A

B

C

D

The correct answer is:

Solution:
The Arrhenius equation is given as
$\begin{aligned}
& k=A e^{-\frac{E_a}{R T}} \\
& \therefore \quad \ln k=\ln A-\frac{E_a}{R T}
\end{aligned}$
In $\mathrm{k} v / \mathrm{s} \frac{1}{\mathrm{~T}}$ gives a straight line graph with slope $=-\frac{E_{\mathrm{a}}}{R}$ and intercept $=\ln \mathrm{A}$

Topic: Chemistry, Chemical Kinetics, NEET, NEET 2024
Which point of difference between Geitonogamy and Xenogamy is incorrect?

Options:
A

Geitonogamy	Xenogamy
It is self-pollination	It is cross pollination

B

Geitonogamy	Xenogamy
It produces fewer variations	If produces a lot of variations.

C

Geitonogamy	Xenogamy
It occurs between two flowers of same Plant	It occurs between two flowers of different Plants

D

Geitonogamy	Xenogamy
Pollination occurs between genetically dissimilar plants.	Pollination occurs between morphologically and genetically dissimilar plants.

The correct answer is:

Geitonogamy	Xenogamy
Pollination occurs between genetically dissimilar plants.	Pollination occurs between morphologically and genetically dissimilar plants.

Solution:
Geitonogamy and xenogamy are two types pollination that occur between same species of plant. Geitonogamy is pollination between two different flowers of the same plant. Xenogamy is the pollination between two different flowers of different plants but same species/type. In both the types, the genetic constitution of the plants/flower participating is similar. Also, the plants and flower are morphologically same in both the cases.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which polymer has a 'chiral' monomer(s)?

Options:
A Nylon 6, 6
B Neoprene
C PHBV
D Buna-N

The correct answer is:
PHBV

Solution:

Topic: Chemistry, Polymers, NEET
Which polymer type is formed by addition polymerization from two different monomers?

Options:
A Homopolymers
B Copolymers
C Terpolymers
D Oligomers

The correct answer is:
Copolymers

Solution:
Copolymers are formed by addition polymerization from two different monomers.

Topic: Chemistry, Polymers, NEET
Which polymerization process is used to produce Buna-N?

Options:
A Condensation polymerization
B Chain growth polymerization
C Step growth polymerization
D Copolymerization

The correct answer is:
Copolymerization

Solution:
Buna-N is obtained through copolymerization, where two different monomers, buta-1,3-diene and acrylonitrile, are polymerized together.

Topic: Chemistry, Polymers, NEET
Which polymerization reaction leads to the formation of nylon 6,6?

Options:
A Addition polymerization
B Radical polymerization
C Step growth polymerization
D Condensation polymerization

The correct answer is:
Condensation polymerization

Solution:
Nylon 6,6 is formed by the condensation polymerization of adipic acid and hexamethylene diamine, which is an example of condensation polymerization.

Topic: Chemistry, Polymers, NEET
Which polymerization reaction leads to the formation of terylene or dacron?

Options:
A Addition polymerization
B Radical polymerization
C Step growth polymerization
D Condensation polymerization

The correct answer is:
Step growth polymerization

Solution:
Terylene or dacron is formed by the interaction of ethylene glycol and terephthalic acid, which is an example of step growth polymerization.

Topic: Chemistry, Polymers, NEET
Which position (ortho, meta, or para) has the highest electron density when a meta directing group is present in an electrophilic aromatic substitution reaction?

Options:
A Ortho
B Meta
C Para
D They have the same electron density.

The correct answer is:
Meta

Solution:
In the presence of a meta directing group, the meta position has the highest electron density in an electrophilic aromatic substitution reaction.

Topic: Chemistry, Hydrocarbons, NEET
Which positions do electrophilic substitutions occur with respect to the halogen atom in haloarenes?

Options:
A Meta- and para- positions
B Ortho- and meta- positions
C Ortho- and para- positions
D Ortho- and ortho- positions

The correct answer is:
Ortho- and para- positions

Solution:
Electrophilic substitutions occur at the ortho- and para- positions with respect to the halogen atom in haloarenes.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which positions in the benzene ring are favoured for electrophilic substitution due to the presence of the -OH group?

Options:
A Meta positions
B Ortho and para positions
C Ortho and meta positions
D Para and meta positions

The correct answer is:
Ortho and para positions

Solution:
The -OH group in phenols directs incoming groups to the ortho and para positions due to the electron-rich nature of these positions via resonance.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Which primates walked more like gorillas and chimpanzees?

Options:
A Dryopithecus
B Ramapithecus
C Australopithecines
D Homo habilis

The correct answer is:
Dryopithecus

Solution:
Dryopithecus and Ramapithecus were primates that walked more like gorillas and chimpanzees.

Topic: Biology, Evolution, NEET
Which principal quantum number (n) is required for the existence of d orbitals?

Options:
A n = 1
B n = 2
C n = 3
D n = 4

The correct answer is:
n = 3

Solution:
The minimum value of the principal quantum number (n) required for the existence of d orbitals is n = 3.

Topic: Chemistry, Structure of Atom, NEET
Which principle of Mendel's laws did Sutton use to explain the behaviour of chromosomes?

Options:
A The law of segregation
B The law of independent assortment
C The law of dominance
D The law of homogeneity

The correct answer is:
The law of segregation

Solution:
Sutton used the law of segregation from Mendel's laws to explain the behaviour of chromosomes.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which process involves the combination of a large number of ethene molecules to form polythene?

Options:
A Polymerization
B Oxidation
C Hydrolysis
D Saponification

The correct answer is:
Polymerization

Solution:
Polymerization is the process in which a large number of ethene molecules combine to form polythene.

Topic: Chemistry, Hydrocarbons, NEET
Which process involves the hydrogenation of vegetable oils with finely divided nickel as a catalyst?

Options:
A Haber's process
B Ostwald's process
C Contact process
D Vegetable oil process

The correct answer is:
Contact process

Solution:
The paragraph describes the hydrogenation of vegetable oils with finely divided nickel as a catalyst, which falls under the category of heterogeneous catalysis.

Topic: Chemistry, Surface Chemistry, NEET
Which process involves the oxidation of sulfur dioxide into sulfur trioxide?

Options:
A Hydrolysis of methyl acetate
B Lead chamber process
C Hydrolysis of sugar
D Hydrolysis of sulfuric acid

The correct answer is:
Lead chamber process

Solution:
The paragraph mentions that the oxidation of sulfur dioxide into sulfur trioxide occurs in the lead chamber process.

Topic: Chemistry, Surface Chemistry, NEET
Which process involves the unfolding of globules and uncoiling of helices in a protein, leading to the loss of its biological activity?

Options:
A Hydrolysis
B Hydrogenation
C Denaturation
D Polymerization

The correct answer is:
Denaturation

Solution:
Denaturation is the process in which protein unfolds, helices uncoil, and biological activity is lost.

Topic: Chemistry, Biomolecules, NEET
Which process is necessary for the formation of ozone from oxygen (O2)?

Options:
A Exothermic process
B Endothermic process
C Photochemical reaction
D Chemical precipitation

The correct answer is:
Endothermic process

Solution:
The formation of ozone from oxygen (O2) is an endothermic process, meaning it requires an input of energy to occur.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which process is preferred at the anode during the electrolysis of dilute sulfuric acid?

Options:
A 2H2O(l) → O2(g) + 4H+(aq) + 4e-
B 2SO42- (aq) → S2O82- (aq) + 2e-
C 2H2(l) → O2(g) + 4H+(aq) + 4e-
D 2SO42- (aq) → S2O82- (aq) + 2e-

The correct answer is:
2H2O(l) → O2(g) + 4H+(aq) + 4e-

Solution:
The preferred process at the anode during the electrolysis of dilute sulfuric acid is 2H2O(l) → O2(g) + 4H+(aq) + 4e-.

Topic: Chemistry, Electrochemistry, NEET
Which process is responsible for the formation of polythene and polypropene from ethene and propene, respectively?

Options:
A Condensation
B Oxidation
C Polymerization
D Hydrolysis

The correct answer is:
Polymerization

Solution:
Polythene and polypropene are formed through a polymerization process, where a large number of ethene and propene molecules combine to form long-chain molecules called polymers.

Topic: Chemistry, Hydrocarbons, NEET