datavorous/entrance-exam-dataset huggingface dataset:
Which of the following statement is incorrect?

Options:
A In monocotyledons, the leaf base expands into a sheath covering the stem partially or wholly.
B In some grasses, the leaf base may become swollen, which is called the pulvinus.
C The leaf blade is the green expanded part of the leaf with veins and veinlets.
D Leaves originate from shoot apical meristems and are arranged in an acropetal order.

The correct answer is:
In some grasses, the leaf base may become swollen, which is called the pulvinus.

Solution:
The leaf is a lateral, generally flattened structure borne on the stem. It develops at the node and bears a bud in its axil. The axillary bud later develops into a branch. Leaves originate from shoot apical meristems and are arranged in an acropetal order.
In monocotyledons, the leaf base expands into a sheath covering the stem partially or wholly. In some leguminous plants, the leaf base may become swollen, which is called the pulvinus. The lamina or the leaf blade is the green expanded part of the leaf with veins and veinlets. There is, usually, a middle prominent vein, which is known as the midrib. Veins provide rigidity to the leaf blade and act as channels of transport for water, minerals and food materials.

Topic: Biology, Morphology of Flowering Plants, NEET
Which of the following statement is incorrect?

Options:
A All enzymes for Kreb's cycle are present in mitochondrial matrix.
B In glycolysis, hydrogen acceptor is NAD, that can pick up hydrogen atoms.
C Glycolysis occurs in both aerobic and aerobic respiration.
D Oxidative phosphorylation takes place in inner mitochondrial membrane and is organized as ETS.

The correct answer is:
All enzymes for Kreb's cycle are present in mitochondrial matrix.

Solution:
Kreb's cycle occurs in matrix of mitochondria, and all enzymes of Kreb's cycle are present in matrix except enzyme succinate dehydrogenase which is present in inner membrane of mitochondria.

Topic: Biology, Respiration in Plants, NEET
Which of the following statement is incorrect

Options:
A In PCl5, all its five bonds are not equivalent.
B In PCl5, all its five bonds are equivalent.
C In PCl5, phosphorus is in sp3d hybridised state
D All are incorrect

The correct answer is:
In PCl5, all its five bonds are equivalent.

Solution:
Correct Option is : (B)
In PCl5, all its five bonds are equivalent.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following statement is incorrect about Agrobacterium tumifaciens?

Options:
A It transforms normal plant cells into tumorous cells.
B It delivers 'T-DNA' into plant cell.
C It is used to deliver gene of interest in both prokaryotic as well as eukaryotic host cells.
D 'Ti' plasmid from Agrobacterium tumifaciens used for gene transfer is not pathogenic to plant cells.

The correct answer is:
It is used to deliver gene of interest in both prokaryotic as well as eukaryotic host cells.

Solution:
Option (3) is the correct answer because Agrobacterium tumefaciens is used to deliver gene of interest into a variety of plant i.e., in eukaryotic host cells.
Options (1), (2) and (4) are not the correct answer because all these statements are correct w.r.t. Agrobacterium tumefaciens.

Topic: Biology, Biotechnology - Principles and Processes, NEET, NEET 2023 (Manipur)
Which of the following statement is incorrect about coronary artery disease in man?

Options:
A CAD is often referred to as atherosclerosis, which affects the vessels that supply blood to the heart muscle.
B It is caused by deposits of lipid-cholesterol, calcium and fibrous tissue in the wall of major arteries.
C It makes the lumen of carotid arteries narrower.
D All of the above are correct

The correct answer is:
It makes the lumen of carotid arteries narrower.

Solution:
Atherosclerosis is caused by deposits of lipid-cholesterol, calcium and fibrous tissue in the wall of coronary arteries of the heart.
It makes the lumen of coronary arteries narrower.

Topic: Biology, Body Fluids and Circulation, NEET
Which of the following statement is incorrect about metagenesis?

Options:
A Alternation of asexual and sexual phases in the life cycle of Obelia is called metagenesis
B Metagenesis is similar to alternation of generations as found in plants
C Both the medusa and polyp are diploid
D Medusa is the sexual phase and polyp is the asexual phase

The correct answer is:
Metagenesis is similar to alternation of generations as found in plants

Solution:
Metagenesis is the alternation of generations between sexual and asexual reproduction, but not similar to alternation of generations as found in plants. In plants, the alternation of generations occurs between a diploid sporophyte and a haploid gametophyte, and not between sexual and asexual reproduction.
Alternation of asexual and sexual phases in the life cycle of Obelia is called metagenesis. In Obelia, both the medusa(the motile stage) and polyp(the sessile stage) are diploid. Medusa is the sexual phase and polyp is the asexual phase.

Topic: Biology, Animal Kingdom, NEET
Which of the following statement is incorrect about photorespiration?

Options:
A In C4 plants, photorespiration does not occur.
B In C3 plants, some O2 does not bind to RuBisCO, and hence CO2 fixation is decreased.
C In the photorespiratory pathway, there is neither synthesis of sugars, nor of ATP.
D The biological function of photorespiration is not known yet.

The correct answer is:
In C3 plants, some O2 does not bind to RuBisCO, and hence CO2 fixation is decreased.

Solution:
In C3 plants, some O2 does bind to RuBisCO, and hence CO2 fixation is decreased. Here the RuBP instead of being converted to 2 molecules of PGA binds with O2 to form one molecule of phosphoglycerate and phosphoglycolate (2 Carbon) in a pathway called photorespiration. In the photorespiratory pathway, there is neither synthesis of sugars, nor of ATP. Rather it results in the release of CO2 with the utilisation of ATP. In the photorespiratory pathway there is no synthesis of ATP or NADPH.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Which of the following statement is incorrect about photosynthesis?

Options:
A Increase in incident light beyond a point increases formation of chlorophyll and thus increase in photosynthesis.
B At high light intensities, both C3 and C4 plants show increase in the rates of photosynthesis.
C C3 plants respond to higher CO2 concentration by showing increased rates of photosynthesis leading to higher productivity has been used for some greenhouse crops such as tomatoes and bell pepper.
D Tropical plants have a higher temperature optimum than the plants adapted to temperate climates.

The correct answer is:
Increase in incident light beyond a point increases formation of chlorophyll and thus increase in photosynthesis.

Solution:
There is a linear relationship between incident light and CO2 fixation rates at low light intensities. At higher light intensities, gradually the rate does not show further increase as other factors become limiting. Increase in incident light beyond a point causes the breakdown of chlorophyll and a decrease in photosynthesis.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Which of the following statement is incorrect about phylum Hemichordata?

Options:
A Excretion by proboscis glands
B Respiration by gills
C Monoecious
D Have a rudimentary structure in the collar region called stomochord.

The correct answer is:
Monoecious

Solution:
Phylum Hemichordata has been recently given the status of separate phylum because it lacks a true notochord. It was previously considered as subphylum under the Phylum Chordata. All are marine with bilaterally symmetrical, organ system level of organization, triploblastic, and eucoelomate. The body is made up of anterior proboscis, collar, and a long trunk. Respiration by gills, the circulatory system is of open type. Excretion is by proboscis glands, dioecious and fertilization is external, development is indirect.
Examples : Balanoglossus (Tongueworm), Saccoglosssus.

Topic: Biology, Animal Kingdom, NEET
Which of the following statement is incorrect about resonance

Options:
A Resonance structures should have equal energy
B In resonance structures, the constituent atoms should be in the same position
C In resonance structures, there should not be the same number of electron pairs
D Resonance structures should differ only in the location of electrons around the constituent atoms

The correct answer is:
In resonance structures, there should not be the same number of electron pairs

Solution:
In resonance structure there should be the same number of electron pairs. Resonance structures can differ only in the location of electrons around the constituent atoms

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following statement is incorrect after the industrial revolution that has occurred in England?

Options:
A Dark coloured Peppered moth is more in urban area
B Light coloured Peppered moth is more in rural area
C No variant is completely wiped out
D All of the above

The correct answer is:
All of the above

Solution:
At the start of this period, the vast majority of peppered moths had light coloured wing patterns which effectively camouflaged them against the light-coloured trees and lichens upon which they rested. However, due to widespread pollution during the Industrial Revolution in England, many of the lichens died out, and the trees which peppered moths rested on became blackened by soot, causing most of the light-coloured moths, or typica, to die off due to predation.

Topic: Biology, Evolution, NEET
Which of the following statement is incorrect for gymnosperm?

Options:
A Leaves may be simple or compound
B In Cycas, the pinnate leaves persist for a many years
C Thick cuticle and sunken stomata of needle-like leaves also help to reduce water loss
D In conifers, the needle-like leaves reduce the surface area

The correct answer is:
In Cycas, the pinnate leaves persist for a many years

Solution:
In Gymnosperms, leaves are either simple or compound. In some gymnosperms like Cycas, the pinnate leaves persist for a few years. Leaves of gymnosperms are well-adapted for adverse conditions like to withstand extremes of temperature, humidity, and wind, etc. In conifers, like Pinus, the needle-like leaves reduce the surface area. Their thick cuticle and sunken stomata also help to reduce water loss.

Topic: Biology, Plant Kingdom, NEET
Which of the following statement is incorrect for opioid drugs?

Options:
A They bind to specific opioid receptors present in our brain/CNS only.
B It includes heroin, commonly called smack, and is diacetylmorphine.
C It is white, odourless, bitter crystalline compound.
D It is extracted from the latex of poppy plant Papaver somniferum.

The correct answer is:
They bind to specific opioid receptors present in our brain/CNS only.

Solution:
Opioids are drugs, which bind to specific opioid receptors present in our central nervous system and gastrointestinal tract. It includes, natural opiates: codeine and morphine; semi-synthetic opiate: heroin, which is chemically diacetylmorphine.

Topic: Biology, Human Health and Diseases, NEET
Which of the following statement is incorrect in relation to leghaemoglobin?

Options:
A Leghaemoglobin functions as oxygen scavenger.
B It is synthesized by host cell.
C It makes nodules pink coloured.
D It oxidizes enzyme nitrogenase.

The correct answer is:
It oxidizes enzyme nitrogenase.

Solution:
The enzyme nitrogenase which carries out nitrogen fixation is highly sensitive to molecular oxygen and it requires anaerobic conditions. To protect this enzyme, the nodule contains an oxygen scavenger called leghemoglobin, which is synthesized by host cell and is pinkish coloured substance.

Topic: Biology, Mineral Nutrition, NEET
Which of the following statement is incorrect regarding diaphragm, cervical cap, and vaults?

Options:
A These prevent conception by blocking the entry of sperms through the cervix.
B These are made up of rubber that are inserted into female reproductive tract to cover the cervix during coitus.
C These provide additional benefit of protecting the user from contracting STDs and AIDS.
D These are reusable.

The correct answer is:
These provide additional benefit of protecting the user from contracting STDs and AIDS.

Solution:
Diaphragms, cervical caps, and vaults are also barriers made of rubber that are inserted into the female reproductive tract to cover the cervix during coitus. They prevent conception by blocking the entry of sperms through the cervix. They are reusable. Spermicidal creams, jellies, and foams are usually used along with these barriers to increase their contraceptive efficiency. Condoms provide the additional benefit of protecting the user from contracting STDs and AIDS

Topic: Biology, Reproductive Health, NEET
Which of the following statement is incorrect regarding physisorption?

Options:
A More easily liquefiable gases are adsorbed readily.
B Under high pressure it results into multi molecular layer on adsorbent surface.
C Enthalpy of adsorption [ΔHadsorption] is low and positive
D It occurs because of van der Waal’s forces.

The correct answer is:
Enthalpy of adsorption [ΔHadsorption] is low and positive

Solution:
As enthalpy of adsorption regarding physisorption is not positive but it is negative, so option C is incorrect while rest all are correct features of Physisorption.

Topic: Chemistry, Surface Chemistry, NEET
Which of the following statement is incorrect regarding positive deviation from ideal behaviour

Options:
A Force of interaction decreases
B Volume increases
C Observed vapour pressure is more than expected vapour pressure
D Gibbs energy change (ΔG) is positive

The correct answer is:
Gibbs energy change (ΔG) is positive

Solution:
Here statement D is incorrect while rest are correct.
In case of positive deviation force of interaction decreases so volume increases and observed vapour pressure is more than expected vapour pressure as rate of evapouration is more but (ΔG) is negative to keep spontaneity.

Topic: Chemistry, States of Matter, NEET
Which of the following statement is incorrect when a mixture of NaCl and K2Cr2O7 is gently warmed with conc. H2SO4?

Options:
A A deep red vapour is evolved
B Chlorine gas is evolved
C The vapour when passed into NaOH solution gives a yellow solution of Na2CrO4
D Chromyl chloride is formed

The correct answer is:
Chlorine gas is evolved

Solution:
Chromyl chloride test
4NaCl+K2Cr2O7+3H2SO4→heatK2SO4+2Na2SO4+2CrO2Cl2+3H2Ochromylchloride(orangered)
4NaOH+ CrO 2 Cl 2 →2NaCl + Na 2 CrO 4 +2 H 2 O Sodium chromate yellow
NaCrO 4 + CH 3 COO Pb→ 2CH 3 COONa + PbCrO 4 ↓ Lead  chromate  yellow ppt

Topic: Chemistry, d and f Block Elements, NEET
Which of the following statement is incorrect with respect to the histology of alimentary canal?

Options:
A Serosa is the outermost layer which is made up of a thin mesothelium with some connective tissue.
B Muscularis is formed by smooth muscles usually arranged into an inner longitudinal layer and outer circular layer.
C Submucosal layer is formed of loose connective tissue.
D An oblique muscle layer may be present in the stomach.

The correct answer is:
Muscularis is formed by smooth muscles usually arranged into an inner longitudinal layer and outer circular layer.

Solution:
In histology of alimentary canal, the muscularis externa is much thicker because the faeces are large and heavy and require more force to push along. The outer longitudinal layer of the colon thins out into 3 discontinuous longitudinal bands, known as taeniae coli (bands of the colon). Muscularis is formed by smooth muscles usually arranged into an inner circular layer and outer longitudinal layer.

Topic: Biology, Digestion and Absorption, NEET
Which of the following statement is incorrect w.r.t. class Cyclostomata?

Options:
A All the members are ectoparasites on some fishes
B Their body is devoid of scales and paired fins
C Circulation is of open type
D They are marine but migrate for spawning to fresh water

The correct answer is:
Circulation is of open type

Solution:
Circulatory system of class Cyclostomata is closed type. Heart is 2 chambered and is surrounded by cartilaginous capsule.

Topic: Biology, Animal Kingdom, NEET
Which of the following statement is incorrect?

Options:
A Basmati rice is distinct for its unique aroma and flavour and 27 documented varieties of Basmati are grown in India.
B Biopiracy is the term used to refer to the use of bio-resources by multinational companies and other organizations without proper authorization from the countries and people concerned without compensatory payment.
C Transgenic animals that produce useful biological products can be created by the introduction of the portion of DNA (or genes) which codes for a particular product such as human protein (alpha-1-antitrypsin) used to treat Phenylketonuria.
D The Indian Government has set up organizations such as
GEAC (Genetic Engineering Approval Committee), which will make decisions regarding the validity of GM research and the safety of introducing GM-organisms for public services.

The correct answer is:
Transgenic animals that produce useful biological products can be created by the introduction of the portion of DNA (or genes) which codes for a particular product such as human protein (alpha-1-antitrypsin) used to treat Phenylketonuria.

Solution:
Transgenic animals that produce useful biological products can be created by the introduction of the portion of DNA (or genes) which codes for a particular product such as human protein (alpha-1-antitrypsin) used to treat emphysema.

Topic: Biology, Biotechnology and Its Applications, NEET
Which of the following statement is not applicable to H2SO4 ?

Options:
A The molecules are associated by H-bonds
B Oxidation state of S is +6
C The hybrid state of S and O atoms of OH groups is same
D The acid always exhibits a basicity of two

The correct answer is:
The acid always exhibits a basicity of two

Solution:
As H2SO4 forms two series of salts i.e, sulphates and bisulphates, hence, it can exhibit basicity of 1 and 2. It means it does not always show basicity 2. Rest other statements given here are correct as it has hydrogen bonds, +6 oxidation state of S-atom and also have sp3 hybridisation for both sulphur and oxygen atoms.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following statement is not correct?

Options:
A Ecosystem is an open system
B Ecosystem is self-sustaining and dynamic structure
C Sun is the ultimate source of energy for any ecosystem
D In an artificial ecosystem flow of energy is not unidirectional

The correct answer is:
In an artificial ecosystem flow of energy is not unidirectional

Solution:
The pyramid of energy is always upright because the flow of energy is unidirectional from producer to consumer level. The energy content is maximum in producers. The energy decreases at each trophic level of the food chain, as part of the energy is lost as heat, and the major part of the energy is liberated during respiration for use in various activities. Only 10% of the energy of the previous trophic level is received by the next trophic level, as proposed by 10 percent law of Lindeman (1942).

Topic: Biology, Ecosystem, NEET
Which of the following statement is not correct?

Options:
A generally Tollen's reagent is used in detection of unsaturation
B Fehling solution is used in detection of glucose
C neutral FeCl3 is used in detection of phenol
D NaHSO3 is used in detection of carbonyl compound

The correct answer is:
generally Tollen's reagent is used in detection of unsaturation

Solution:
Tollen's reagent is a solution of ammoniacal silver nitrate and generally used for the detection of -CHO group. Aldehydes reduce Tollen's reagent and itself get oxidised to give Ag+ ions to Ag powder which forms the silver coloured mirror in the test tube. So this test is also known as silver mirror test.
R-CHO(Powder)+[Ag(NH3)2]+→R-COO-+Ag

Topic: Chemistry, Aldehydes and Ketones, NEET
Which of the following statement is not correct?

Options:
A [Ni(CN)4]2- and [Ni(CO)4] have the same magnetic moment
B [NiCl4]2- and [PtCl4]2- have different shapes
C Hybridisation state of Co in [Co(Ox)3]3- is sp3d2
D In brown-ring complex [Fe(H2O)5NO]SO4 oxidation state of Fe is +1

The correct answer is:
Hybridisation state of Co in [Co(Ox)3]3- is sp3d2

Solution:
[Co(Ox)3]3-
Co3+=[Ar]4s03d6

[Ni(CN)4]2- and [Ni(CO)4] have zero magnetic moment as have no unpaired electron.
[NiCl4]2- and [PtCl4]2- have different shapes that is tetrahedral and square planar respectively.
In brown-ring complex [Fe(H2O)5NO]SO4 oxidation state of Fe is +1 as NO is taken as +1 here.

Topic: Chemistry, Coordination Compounds, NEET
Which of the following statement is not correct about diborane?

Options:
A The four terminal B-H bonds are two centre two electron bonds.
B The four terminal Hydrogen atoms and the two Boron atoms lie in one plane.
C Both the Boron atoms are sp2 hybridised.
D There are two 3-centre-2-electron bonds.

The correct answer is:
Both the Boron atoms are sp2 hybridised.

Solution:
Boron atoms form 4 bonds and are sp3 hybridised.

The four terminal B-H bonds are two centre two electron bonds.While There are two 3-centre-2-electron bonds in between both B atoms. The four terminal Hydrogen atoms and the two Boron atoms lie in the same plane.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET, NEET 2022 (Phase 1)
Which of the following statement is not correct about evolution?

Options:
A Fossilized animals provide important information to trace evolution
B Wing of birds and forelimbs of cows are homologous
C In higher animals early development stages are similar
D Variation among individuals are not important in natural selection

The correct answer is:
Variation among individuals are not important in natural selection

Solution:
According to Darwin, variations help the organisms to survive by developing necessary adaptations and thus, they are selected by nature and form the basis of evolution.

Topic: Biology, Evolution, NEET
Which of the following statement is not correct about Hisardale?

Options:
A It is newly developed breed of sheep.
B It is a type of outbreeding.
C It is an example of cross breeding.
D It is developed by crossing Bikaneri rams and Marino ewes.

The correct answer is:
It is developed by crossing Bikaneri rams and Marino ewes.

Solution:
Hisardale is a new breed of sheep developed in Punjab by crossing Bikaneri ewes and Marino rams. It is an example of cross breeding, which comes under outbreeding. In this method, superior males of one breed are mated with superior females of another breed.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Which of the following statement is not correct for the reaction?
4A + B→2C + 2D

Options:
A The rate of disappearance of B is one-fourth of the rate of disappearance of A
B The rate of appearance of C is two times the rate of disappearance of B
C The rate of formation of D is half the rate of consumption of A
D The rates of formation of C and D are not equal

The correct answer is:
The rates of formation of C and D are not equal

Solution:
-14d[A]dt=-d[B]dt
=+12d[C]dt=+12d[D]dt
So, +d[C]dt=+d[D]dt

Topic: Chemistry, Chemical Kinetics, NEET
Which of the following statement is not correct for Viroids?

Options:
A Causes potato spindle tuber disease and tobacco mosaic disease
B In 1971, TO. Diener discovered these agents
C Viroid was found to be a free RNA, it lacked the protein coat
D RNA of viroid was of low molecular weight

The correct answer is:
Causes potato spindle tuber disease and tobacco mosaic disease

Solution:
Viroids are infectious agents that were discovered by T.O. Diener in 1971. They are smaller than viruses and are found to be in the form of free RNA (without protein coat). Their molecular weight is comparatively low. They cause potato spindle tuber disease. Tobacco mosaic disease is caused by a virus named as Tobacco mosaic virus (TMV).

Topic: Biology, Biological Classification, NEET