datavorous/entrance-exam-dataset huggingface dataset:
Which of the following is incorrect about the transport of gases by blood?

Options:
A The oxygen dissociation curve is sigmoid and shifts to the right at high pCO2, and low pH.
B Every 100 ml of oxygenated blood can deliver around 5 ml of O2 to the tissues under normal physiological conditions.
C The major factor affecting the formation of carbamino-hemoglobin is low H+ concentration.
D Approximately 70% of carbon dioxide is carried as bicarbonates.

The correct answer is:
The major factor affecting the formation of carbamino-hemoglobin is low H+ concentration.

Solution:
CO2 is carried by hemoglobin as carbamino-hemoglobin (about 20-25 percent). This binding is related to the partial pressure of CO2. pO2 is a major factor that could affect this binding. When pCO2 is high and pO2 is low as in the tissues, more binding of carbon dioxide occurs whereas, when the pCO2 is low and pO2 is high as in the alveoli, dissociation takes place.

Topic: Biology, Breathing and Exchange of Gases, NEET
Which of the following is incorrect about the uterine wall?

Options:
A Perimetrium - Outer thin covering of peritoneum
B Myometrium - Middle thick smooth muscle layer
C Mesometrium - Smooth muscle layer below myometrium
D Endometrium - Inner glandular layer that lines the uterine cavity

The correct answer is:
Mesometrium - Smooth muscle layer below myometrium

Solution:
The uterus is a part of the female reproductive system and is also known as the womb. It is an inverted pear-shaped organ that bears the foetus during pregnancy. The uterine wall has three layers which are perimetrium, myometrium, and endometrium. Perimetrium is the outer thin covering. Myometrium is the thick middle layer of smooth muscles and the inner layer which contains glands is called the endometrium. It is the endometrium that undergoes cyclical changes during menstrual cycle.

Topic: Biology, Human Reproduction, NEET
Which of the following is INCORRECT for forewings of a cockroach?

Options:
A Also called mesothoracic wings or tegmina
B Opaque, dark and leathery
C Cover the hind wings when at rest
D Used in flight

The correct answer is:
Used in flight

Solution:
The body of cockroach is divided into head, thorax, and abdomen. Head bears compound eyes, mouthparts, and antennae. Thorax is divided into three parts: the prothorax, mesothorax, and metathorax. Three pairs of legs and two pairs of wings arise from the thorax. Each pair arises from each part of the thorax and thus these are named as prothorax, mesothoracic and metathoracic legs. The two pairs of wings are forewings and hindwings. Forewings arise from the mesothorax or junction of pro and mesothorax. Hence, these wings are known as mesothoracic wings. These are covered by a thick sheath known as tegmina. These being thick cannot be used for flying and hence are used to protect the delicate hind wings while walking. Hind wings are used in flight.

Topic: Biology, Structural Organisation in Animals, NEET
Which of the following is incorrect for hormones?

Options:
A They are chemical acts as intercellular messengers.
B They are non-nutrient chemicals.
C They are always produced in trace amounts.
D They are species-specific chemicals.

The correct answer is:
They are species-specific chemicals.

Solution:
Hormones are non-nutrient chemicals which acts as intercellular messengers and are always produced in trace amounts. Hormones are not species specific chemicals means they can exert the same effect on different animal or species.

Topic: Biology, Chemical Coordination and Integration, NEET
Which of the following is incorrect for operon concept?

Options:
A The sequence of structural gene in lac operon is ZYA where Z gene codes for hydrolytic enzyme
B Allolactose turns it on by binding with repressor protein
C It is an inducible operon and controls catabolic reactions
D Operator gene receives RNA polymerase to switch it off

The correct answer is:
Operator gene receives RNA polymerase to switch it off

Solution:
The functional unit of DNA having a group of genes regulated by a single promoter is termed as an operon. The operon holds the promoter, operator, and the structural genes which express to produce the necessary protein intron are not part of the operon. Lac operon is one of the most widely studied operon models. It was described by Francois Jacob and Jacques Monod in E. coli. The sequence of the structural genes in lac operon is ZYA where the Z gene codes for the hydrolytic enzyme, beta-galactosidase. Allolactose turns it on by binding with repressor protein. It is an inducible operon and controls catabolic reactions. The RNA polymerase binds to the promoter and switches the production of proteins regarding the structural genes.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which of the following is incorrect for the product of transgenic 'Rosie' cow?

Options:
A It had a protein content of 2.4 gm/litre.
B It was rich in cholesterol.
C It had alpha-lactalbumin protein.
D It was nutritionally a more balanced product for human babies than normal cow milk.

The correct answer is:
It was rich in cholesterol.

Solution:
In 1997, first transgenic 'Rosie' produced human protein-enriched milk. The milk contained the human alpha-lactalbumin, 2.4 grams per liter and was nutritionally a more balanced product for human babies than natural cow- milk.

Topic: Biology, Biotechnology and Its Applications, NEET
Which of the following is incorrect for wind-pollinated plants?

Options:
A Well exposed stamens and stigma
B Many ovules in each ovary
C Flowers are small and not brightly coloured
D Pollen grains are light and non-sticky

The correct answer is:
Many ovules in each ovary

Solution:
Characteristics of wind-pollinated flowers:
i) The pollen grains are light and non – sticky so that they can easily be carried by air currents.
ii) The flowers have well–exposed stamens so that the pollens are easily dispersed into wind currents.
iii) Flowers have a large feathery stigma to easily trap the airborne pollen grains.
iv) Nectar is absent.
v) Presence of a single ovule in each ovary
vi) Flowers packed into an inflorescence.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2020 (Phase 2)
Which of the following is incorrect in relation to sex determination in organisms?

Options:
A In male grasshopper, 50 % of the sperms have no sex chromosome
B Usually, female birds produce two types of gametes based on sex chromosome.
C The human males have one of their sex chromosome much shorter than other.
D In domesticated fowls, the sex of the progeny depends on the type of sperm rather than the egg.

The correct answer is:
In domesticated fowls, the sex of the progeny depends on the type of sperm rather than the egg.

Solution:
Grasshopper is an example of XO type of sex determination, in which males have only one X chromosome besides autosome; thus, 50% of sperm carries X chromosome and 50% without the X chromosome. In birds, the female is heterogametic and produces two types of gametes. In humans, the Y chromosome is shorter than the X chromosome.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following is incorrect match about human excretory system?

Options:
A Columns of Bertini : extension of cortex in between the renal pyramids.
B Renal corpuscles : Bowman's capsule and glomerulus.
C Cortical nephrons : Vasa recta is absent or highly reduced.
D Podocytes: Cuboidal epithelium of Bowman's capsule.

The correct answer is:
Podocytes: Cuboidal epithelium of Bowman's capsule.

Solution:
The Squamous epithelial cells of Bowman's capsule are called podocytes. These cells are specialised to arranged in an intricate manner so as to leave some minute spaces called filtration slits or slit pores. Filtration of blood occurs through these fine pores or slits.

Topic: Biology, Excretory Products and their Elimination, NEET
Which of the following is incorrect match for angiosperms?

Options:
A Egg cell - Haploid
B Megaspore - Diploid
C Pollen grain - Haploid
D Synergid - Haploid

The correct answer is:
Megaspore - Diploid

Solution:
The process of formation of megaspores from the megaspore mother cell is called megasporogenesis. Ovules generally differentiate a single megaspore mother cell (MMC) in the micropylar region of the nucellus. It is a large cell containing dense cytoplasm and a prominent nucleus. The MMC undergoes meiotic division. Meiosis results in the production of four haploid megaspores.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which of the following is incorrect match?

Options:
A SiF4 can act as Lewis acid
B In benzyne all C-atoms are sp2 -hybridized
C PBr3 non polar
D CHF=C=CHF nodal planes of π -bonds are not lying in same plane

The correct answer is:
PBr3 non polar

Solution:
SiF4→ Si-atom has vacant d-orbitals so it can act as Lewis acid.
In benzyne all C-atoms are sp2 -hybridized.
This is polar molecule.
The nodal planes of π -bonds are perpendicular to each other.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following is incorrect order of decreasing reactivity towards electrophilic aromatic substitution?

Options:
A Fluoro benzene > chloro benzene > bromo benzene
B Phenol > n-propyl benzene > benzoic acid
C Chloro toluene > para-nitro toluene > 2-chloro-4-nitro toluene
D Benzoic acid > phenol > n-propyl benzene

The correct answer is:
Benzoic acid > phenol > n-propyl benzene

Solution:
-COOH group is a deactivating group, hence benzoic acid is less reactive towards electrophilic substitution than phenol.

Topic: Chemistry, Hydrocarbons, NEET
Which of the following is incorrect order?

Options:
A CH3->CH3O->HO->H2O (Nucleophilicity in protic solvent)
B Cl->CH3COO->CH3O->NH2- (Leaving group ability)
C Stability of alkane
D CH3-CH2-F>CH3-CH2-Cl>CH3-CH2-Br>CH3-CH2-I(Boiling point)

The correct answer is:
CH3-CH2-F>CH3-CH2-Cl>CH3-CH2-Br>CH3-CH2-I(Boiling point)

Solution:
(i) nucleophilicity â negative change density of at atom
(order of nuclophilicity) neutral atom
(ii) Cl->CH3COO->CH3O->NH2- leaving group ability â1Basic strength
(iii) Stability of alkene â hyper conjugation

Topic: Chemistry, Hydrocarbons, NEET
Which of the following is incorrect pairing of plant and the characteristic?

Options:
A Variation in the length of filaments within a flower: Salvia
B Polycarpellary syncarpous gynoecium: Tomato
C Ovary is one-chambered but it becomes two chambered due to formation of a false septum: Argemone
D The gynoecium occupies the highest position while the other parts are situated below it: Guava

The correct answer is:
The gynoecium occupies the highest position while the other parts are situated below it: Guava

Solution:
In the hypogynous flower the gynoecium occupies the highest position while the other parts are situated below it. The ovary in such flowers is said to be superior, e.g., mustard, china rose and brinjal. In epigynous flowers, the margin of thalamus grows upward enclosing the ovary completely and getting fused with it, the other parts of flower arise above the ovary. Hence, the ovary is said to be inferior as in flowers of guava and cucumber. There may be a variation in the length of filaments within a flower, as in Salvia and mustard. Flowers are termed syncarpous when carpels are fused, as in mustard and tomato. In parietal placentation, the ovules develop on the inner wall of the ovary or on peripheral part. Ovary is one-chambered but it becomes twochambered due to the formation of the false septum, e.g., mustard and Argemone.

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

I. Species diversity is highest in poles and decreases towards tropics
II. Stable community shows more productivity
III. Sacred groves are a type of ex situ conservation
IV. More solar energy available in tropics contributes to its higher productivity.

Options:
A I and IV
B I, III and IV
C II and III
D I and III

The correct answer is:
I and III

Solution:
Moving from the equator towards the poles species diversity decreases with the polar region having fewer species than trophic areas. To save the biodiversity whole ecosystem has to be protected and this approach is called in situ conservation. Sacred grooves are a type of in situ conservation. Sacred groves were made by setting aside tracts of forest and all the trees and wildlife within were respected and given total protection.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is incorrect regarding Copper-T?

Options:
A Increasing phagocytosis of sperms
B Suppressing motility of sperms
C Preventing implantation of the blastocyst
D Preventing ovulation

The correct answer is:
Preventing ovulation

Solution:
Intra-uterine devices are contraceptives inserted by doctors or expert nurses in the uterus through vagina. Copper releasing IUDs such as the Copper-T act by increasing phagocytosis of sperms within the uterus and the Copper ions released suppress sperm motility and the fertilizing capacity of sperms. Ovulation is controlled by FSH and LH hormones. Copper T doesn't prevent ovulation.

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

Options:
A It is developed through cross-breeding.
B It is a hybrid breed.
C It is a milch breed.
D It is a high wool-producing crossbreed.

The correct answer is:
It is a milch breed.

Solution:
Hisardale is a new breed of sheep developed in Punjab by cross-breeding Bikaneri ewes and Marino rams for high wool production.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Which of the following is incorrect regarding MALT?

Options:
A It stands for mucosa-associated lymphoid tissue.
B It is present in respiratory, digestive and urogenital tracts.
C It constitutes about 50% of lymphoid tissue in human body.
D The MALT of respiratory tract produce significant enzymes and mucus.

The correct answer is:
The MALT of respiratory tract produce significant enzymes and mucus.

Solution:
The mucosa-associated lymphoid tissue initiates immune responses to specific antigens encountered along all mucosal surfaces.

Topic: Biology, Human Health and Diseases, NEET
Which of the following is incorrect regarding oxidative phosphorylation?

Options:
A Oxidation of 1 molecule of NADH gives 3 molecules of ATP.
B The role of oxygen is limited to the terminal stage of the process.
C Oxygen acts as the final hydrogen acceptor.
D Cytochrome c is located towards the inner side (matrix) of the inner mitochondrial membrane.

The correct answer is:
Cytochrome c is located towards the inner side (matrix) of the inner mitochondrial membrane.

Solution:
1 NADH is equivalent to 3 ATPs. Oxygen is the terminal electron or proton acceptor in ETC. Cytochrome c is located towards IMS, i.e., on the outer side of the inner membrane of the mitochondria.

Topic: Biology, Respiration in Plants, NEET
Which of the following is incorrect regarding T-cells?

Options:
A These play important role in cell mediated immunity.
B These play an important role in activation of B-lymphocytes.
C These are a type of lymphocytes.
D These are not responsible for graft rejection.

The correct answer is:
These are not responsible for graft rejection.

Solution:
Tissue matching, blood group matching are essential before undertaking any graft/transplant, and even after this, the patient has to take immunosuppressants all his/her life. The body is able to differentiate ‘self ’ and ‘non-self’ and the cell-mediated immune response is responsible for graft rejection.

Topic: Biology, Human Health and Diseases, NEET
Which of the following is incorrect regarding the erythroblastosis foetalis condition in a pregnant woman?

Options:
A It is a special case arises due to Rh incompatibility or mismatching
B Destruction of Rh(+ve) foetal RBC inside Rh(-ve) pregnant mother
C Specific antibodies against Rh antigens are formed inside foetal blood
D It can be prevented by injecting anti-Rh antibodies to the mother

The correct answer is:
Specific antibodies against Rh antigens are formed inside foetal blood

Solution:
A special case of Rh incompatibilty or mismatching has been observed between the Rh(-ve) blood of a pregnant mother with Rh(+ve) blood from the foetus. This leads to formation of specific antibodies against Rh antigens in mother blood.

Topic: Biology, Body Fluids and Circulation, NEET
Which of the following is incorrect regarding the figure shown below?

Options:
A These devices are inserted by doctors or expert nurses in the uterus through vagina.
B The device is copper releasing which suppress sperm motility
C It is an ideal contraceptive for female.
D It decreases phagocytosis of sperms and makes uterus suitable for implantation.

The correct answer is:
It decreases phagocytosis of sperms and makes uterus suitable for implantation.

Solution:
The given image is of a IUD which in inserted in to the uterus. This device is used as a contraception to prevent implantation and avoid pregnancy. It may suppress he motility of the sperm to inhibit fertilization.

Topic: Biology, Reproductive Health, NEET
Which of the following is incorrect regarding the function of gibberellins?

Options:
A Bolting in beet, cabbages etc.
B Spraying juvenile conifers with GA delays the maturity period thereby delaying their seed production
C Elongation of apples and improve its shape
D Used to speed up the malting process in brewing industry.

The correct answer is:
Spraying juvenile conifers with GA delays the maturity period thereby delaying their seed production

Solution:
Gibberellins are a group of hormone which promote plant growth. Gibberellic acid was the first discovered gibberellin and most widely used. It can used to hasten the maturity period of juvenile conifers by spraying on it and enabling early seed formation.

Topic: Biology, Plant - Growth and Development, NEET
Which of the following is incorrect regarding vasectomy?

Options:
A No sperm occurs in seminal fluid
B No sperm occurs in the epididymis
C Vasa deferentia is cut and tied
D Irreversible sterility

The correct answer is:
No sperm occurs in the epididymis

Solution:
VASECTOMY: It is temporary method of sterilization in males. In this method vas deferens are cut and tied both the ends under minor surgical operation. This prevents the transport of sperms towards ejaculatory duct from edididymis via vas deferens during sexual intercourse. Vasectomy is effective and is irreversible. The sperms continue to form but cannot reach the urethra. Such, sperm undergoes lysis and are engulfed.

Topic: Biology, Reproductive Health, NEET, NEET 2016 (Phase 2)
Which of the following is incorrect statement?

Options:
A PbF4 is covalent in nature
B SiCl4 is easily hydrolysed
C GeX4X=F,Cl,Br,I is more stable than GeX2
D SnF4 is ionic in nature

The correct answer is:
PbF4 is covalent in nature

Solution:
Except for first statement, all other statements are correct.
Lead tetrafluoride is an ionic compound and thus, is not covalent by nature.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2019 (All India)
Which of the following is incorrect statement about OSF4?

Options:
A S atom has sp3d hybridization
B OSF4 has distorted trigonal-pyramidal shape.
C O atom is present at equatorial position.
D There is no lone pair on S.

The correct answer is:
OSF4 has distorted trigonal-pyramidal shape.

Solution:
In OSF4, BP = 5, LP = 0 and hence the hybridization is sp3 d and shape is trigonal-bipyramidal.

Distortion in geometry due to presence of S=O (Bond) equatorially. S-atom does not contain any lone pair electrons.Distortion in geometry due to presence of S=O (Bond) equatorially. S-atom does not contain any lone pair electrons.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following is incorrect statement?

Options:
A Density decreases in case of crystals with Schottky’s defect.
B NaCl(s) is insulator, silicon is semiconductor, silver is conductor, quartz is piezo electric crystal.
C Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal.
D FeO0.98 has non stoichiometric metal deficiency defect.

The correct answer is:
Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal.

Solution:
As Frankel defect is observed in Ionic Compounds with low co-ordination number and in which size of cation and anion differ largely like ZnS etc. In case of Schottky’s defect as ions are missing so density decreases. NaCl(s) is insulator (no ion or electron to move), silicon is semiconductor, silver is conductor, quartz is piezo electric crystal. FeO0.98 has non stoichiometric metal deficiency defect as Fe2+ ion are missing so stoichiometry changes.

Topic: Chemistry, Solid State, NEET
Which of the following is INCORRECT with respect to bone and its associated part?

Options:
A Atlas vertebra - Odontoid process
B Pectoral girdle - Acromion process
C Humerus - Trochlea
D Ulna - Styloid process

The correct answer is:
Atlas vertebra - Odontoid process

Solution:
First cervical vertebrae is Atlas and Second cervical vertebrae is Axis. Both are atypical which means have special characteristic feature. Atlas lacks a body and a spinous process. Axis has dens or odontoid process.
Pectoral girdle consists of Scapula and Clavicle. Scapula or shoulder blade has acromian process which attches with clavicle. Humerus is the bone of arm and has troclear process. Radius and Ulna are bones of forearm. Ulna has styloid process at the distal end of forearm.

Topic: Biology, Locomotion and Movement, NEET
Which of the following is incorrectly matched?

Options:
A Alpha diversity - Number of species in a given habitat
B Genetic diversity - Variation of genes within species
C Beta diversity - Diversity of habitat in the whole region
D Species diversity - The product of species richness and evenness

The correct answer is:
Beta diversity - Diversity of habitat in the whole region

Solution:
Beta diversity refers to the rate of replacement of species along a gradient of habitats or communities within a given geographical region. If there is more dissimilarity between communities, then there will be beta diversity.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is incorrectly matched?

Options:
A Ulothrix - Mannitol
B Porphyra - Floridian Starch
C Volvox - Starch
D Ectocarpus - Fucoxanthin

The correct answer is:
Ulothrix - Mannitol

Solution:
Ulothrix belongs to green algae and has starch as the reserve food.

Porphyra has Floridian starch as the reserve food as its red alga.

Volvox have chlorophyll-a, b and reserve food as starch. This is a Chlorophyceae member.

Fucoxanthin is found in brown algae Ectocarpus is a brown alga.

Topic: Biology, Plant Kingdom, NEET, NEET 2022 (Phase 1)
Which of the following is incorrectly matched?

Options:
A ABO Blood group in Humans - Multiple allelism.
B Skin colour in human - Multiple allelism
C Flower colour in Mirabilis - Incomplete dominance.
D Phenylketonuria - Pleiotropism.

The correct answer is:
Skin colour in human - Multiple allelism

Solution:
Skin color in humans is not the case of multiple allelism rather it is the case of polygenic inheritance. Polygenic inheritance occurs when one character is controlled by two or more genes. Often the genes are large in quantity but small in effect. Examples of human polygenic inheritance are height, skin color, eye color, etc.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following is incorrectly paired?

Options:
A Homo sapiens - Mammalia
B Musca domestica - Insecta
C Triticum aestivum - Dicotyledonae
D Mangifera indica - Dicotyledonae

The correct answer is:
Triticum aestivum - Dicotyledonae

Solution:
Common Name: Wheat
Binomial name: Triticum aestivum
Genus: Triticum
Family: Poaceae
Order: Poales
Class: Monocotyledonae
Division: Angiospermae

Topic: Biology, The Living World, NEET
Which of the following is inert towards SN1 reaction?

Options:
A Ethyl chloride
B Isopropyl chloride
C
D

The correct answer is:

Solution:
No carbocation can form at and bridgehead carbon.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET