datavorous/entrance-exam-dataset huggingface dataset:
Male condoms are most commonly used contraceptive method used by males worldwide. These are usually made up of

Options:
A Rubber or polyethylene
B Latex or rubber
C Polyethylene
D Gelatin

The correct answer is:
Latex or rubber

Solution:
Condoms are made up of thin rubber or latex sheath that covers the penis in the male or vagina and cervix in the female, just before coitus so that the semen may not be ejaculated into the female reproductive tract. 'Nirodh' is one of the popular brands of condom for the male. Both the male and the female condoms are disposable and can be self-inserted, thereby giving privacy to the user.
Additional benefit: Protection from STDs like AIDS.

Topic: Biology, Reproductive Health, NEET
Male gametes in angiosperms are formed by the division of:

Options:
A generative cell
B vegetative cell
C microspore mother cell
D microspore.

The correct answer is:
generative cell

Solution:
Pollen grains in angiosperms are released at the 2-celled stage generative cell and vegetative cell. The generative cell divides to form two male gametes.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2007
Male gametes in angiosperms are formed by:

Options:
A Mitotic division in vegetative cell
B Meiotic division in pollen mother cell
C Meiotic division in vegetative cell
D Mitotic division in generative cell

The correct answer is:
Mitotic division in generative cell

Solution:
In angiosperm pollen grain is the male gametophyte which undergoes mitosis to form a larger vegetative cell and a smaller generative cell. The generative cell than undergoes mitosis to form two small spindle shaped male gametes.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Male gametophyte with the least number of cells is present in:

Options:
A Pteris
B Funaria
C Lilium
D Pinus

The correct answer is:
Lilium

Solution:
Lilium is an angiosperm, in which the male gametophyte is 3-celled and most reduced gametophyte as compared to Funaria (Bryophyte), Pinus (Gymnosperm), Pteris (Pteridophyte).

Topic: Biology, Plant Kingdom, NEET, NEET 2014
Male nucleus fuses with female nucleus during fertilization in Angiosperms as

Options:
A they possess two sets of different charges
B they possess two sets of different genome
C they are different in size and shape
D hormones compel them to fuse

The correct answer is:
they possess two sets of different charges

Solution:
Fertilization is the process of fusion of male gamete with female gamete forming the zygote. In it, the nucleus of male and female gamete fuse to create one single nucleus and cell. This zygote later divides and develops into a new individual organism. The two nuclei participate in the process and fuse due to the difference in the organelle charges generated by the recombined genetic material and protein changes during the meiotic process.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Malignant form of Malaria which is most serious and even can be fatal one is caused by

Options:
A Anopheles
B Plasmodium falciparum
C Pseudomonas
D Plasmodium malariale

The correct answer is:
Plasmodium falciparum

Solution:
Falciparum malaria is the most severe form of malaria, caused by Plasmodium falciparum, with severe constitutional symptoms and sometimes causing death. P. falciparum alone is capable of causing three types of malaria, viz., quotidian malaria, which attacks almost daily, malignant tertian malaria, which occurs every 48 hours, but is very severe and often fatal; and irregular malaria. This species is found only in the tropical region. Cerebral malaria is the most severe neurological complication of the infection.

Topic: Biology, Human Health and Diseases, NEET
Malignant malaria is caused by

Options:
A Plasmodium vivax
B Plasmodium malaria
C Plasmodium falciparum
D Plasmodium ovale

The correct answer is:
Plasmodium falciparum

Solution:
Different species of Plasmodium (P. vivax, P. malaria, and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.

Topic: Biology, Human Health and Diseases, NEET
Malonate inhibits the growth of pathogenic bacteria by inhibiting the activity of:

Options:
A Dinitrogenase
B Succinic dehydrogenase
C Amylase
D Lipase

The correct answer is:
Succinic dehydrogenase

Solution:
The activity of any enzyme is extremely sensitive to the presence of specific chemicals that bind to the enzyme. Inhibitors are capable of switching off the activity of enzyme.

When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. Competitive inhibitors compete with the substrate for the substrate binding site of the enzyme and block the activity.

The inhibition of succinic dehydrogenase enzyme by malonate which closely resembles the substrate succinate in structure is an example of competitive inhibition.

Topic: Biology, Biomolecules (B), NEET, NEET 2023 (All India)
Malonate is inhibited by succinate dehydrogenase. This is a type of

Options:
A non-competitive inhibition
B competitive inhibition
C negative feed back
D allosteric inhibition

The correct answer is:
competitive inhibition

Solution:
In competitive inhibition, the inhibitor is structurally similar to the substrate and both compete with each other to bind to active site of the enzyme. Malonate is an inhibitor that is structurally similar to substrate succinic acid. Both competes to occupy active site of enzyme succinate dehydrogenase.

Topic: Chemistry, Biomolecules, NEET
Malonic acid and succinic acid are distinguished by

Options:
A Heating
B NaHCO3
C Both (A) & (B)
D None of these

The correct answer is:
Heating

Solution:
On heating malonic acid undergo decarboxylation while succinic acid dehydrates and form cyclic anhydride.

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Malonic acid on dehydration with P4O10 gives an oxide, which is

Options:
A linear
B bent V-shaped
C planer
D tetrahedral

The correct answer is:
linear

Solution:

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Malpighian tubules in Periplaneta americana are _________ in number and _________ coloured.

Options:
A 50-60, green
B 50-60, yellow
C 100-150, green
D 100-150, yellow

The correct answer is:
100-150, yellow

Solution:
In cockroach, the midgut has glandular epithelium that secretes many digestive enzymes. 6-8 hepatic or gastric cecae open at the junction of foregut and midgut. These are blind ducts meant for secreting digestive enzymes. 100 - 150 yellow coloured, thin filamentous structures are known as Malpighian tubules open at the junction of midgut and hindgut. These collect excretory waste from the haemolymph and pour the same into the hindgut.

Topic: Biology, Structural Organisation in Animals, NEET
Maltose on hydrolysis gives

Options:
A Mannose + glucose
B Galactose + glucose
C Glucose
D Mannose + fructose

The correct answer is:
Glucose

Solution:
C12H22O11Maltose+H2OâMaltasefrom yeast2C6H12O6Glucose

Topic: Chemistry, Biomolecules, NEET
Mammalian brain differs from an amphibian brain in possessing

Options:
A Olfactory lobe
B Hypothalamus
C Corpus callosum
D Cerebellum

The correct answer is:
Corpus callosum

Solution:
Corpus callosum is a thick whitish band of semicircular nerve fibres interconnecting two cerebral hemispheres (found only in mammals).

Topic: Biology, Neural Control and Coordination, NEET
Mammals from colder climates generally have shorter ears and limbs to minimise heat loss. This is

Options:
A Allen's Rule
B Tillman's rule
C Gauss principle
D Lindeman's rule

The correct answer is:
Allen's Rule

Solution:
Ecogeographical rule formulated by Joel Asaph Allen broadly says that warm blooded animals of cold habitat have extremities like feet, tail, ears, etc. smaller compared to their relatives of warmer habitat. The enables to reduce heat loss by the organism.

Topic: Biology, Organisms and Populations, NEET
Mammals from colder climates generally have shorter ears and limbs to minimize heat loss. This is called

Options:
A Bergman's rule
B Gloger's rule
C Allen's rule
D jordan's rule

The correct answer is:
Allen's rule

Solution:
According to Allen's rule warm blooded mammals living in colder climate have smaller extremities like ears and limbs to minimize heat loss. According to Bergman's rule small sized animals like Shrew and Humming birds are not found in cold clinates.

Topic: Biology, Organisms and Populations, NEET
Mammary gland of a woman is

Options:
A a modified sweat gland
B a primary sex organ
C an exocrine gland
D Both a and c

The correct answer is:
Both a and c

Solution:
The mammary gland of a woman is an exocrine gland having a duct system. Its secretion is called milk, which provides nutrition and immunity to newborn babies.
The mammary gland is a modified sweat or sudorific gland and an important reproductive organ in female.

Topic: Biology, Human Reproduction, NEET
Manganese is required in

Options:
A nucleic acid synthesis
B plant cell wall formation
C photolysis of water during photosynthesis
D chlorophyll synthesis

The correct answer is:
photolysis of water during photosynthesis

Solution:
In plants, manganese is absorbed in the form of manganous ions $\left(\mathrm{Mn}^{2+}\right)$. It activates many enzymes involved in photosynthesis, respiration and nitrogen metabolism. The best defined function of manganese is in the splitting of water to liberate oxygen during photosynthesis, ie, photolysis of water.

Topic: Biology, Mineral Nutrition, NEET, NEET 2009 (Screening)
Manganese toxicity causes:

Options:
A Reduces uptake of magnesium and iron
B Inhibit translocation of Ca2+
C Yellow spots surrounding chlorotic veins
D Both (a) and (b)

The correct answer is:
Both (a) and (b)

Solution:
The prominent symptom of manganese toxicity is the appearance of brown spots surrounded by chlorotic veins. Manganese competes with iron and magnesium for uptake and with magnesium for binding with enzymes. Manganese also inhibits calcium translocation in the shoot apex. Therefore, excess of manganese may, in fact, induce deficiencies of iron, magnesium and calcium.

Topic: Biology, Mineral Nutrition, NEET
Mango, a popular fruit of India is found with many variations in flavours, colours, fibre content, sugar content including shelf life. What can be the reason for such a huge variation?

Options:
A Species diversity
B Ecological diversity
C Genetic diversity
D Hybridization

The correct answer is:
Genetic diversity

Solution:
When a particle species or organism group show high diversity at genetic level in it distribution range comes under the genetic diversity. India has plant species like mango and rice who have more than 1000 and 50000 types. Ecological diversity is the variation in the different ecosystem types found in a given geographical area. India has lots of varieties like wetlands, mangroves, coral reefs.

Topic: Biology, Biodiversity and its Conservation, NEET
Manipulation of DNA in genetic engineering became possible due to the discovery of:

Options:
A restriction endonuclease
B DNA ligase
C transcriptase
D primase

The correct answer is:
restriction endonuclease

Solution:
Genetic engineering, also called recombinant DNA technology, involves the group of techniques used to cut up (by restriction enzymes) and join together (via DNA ligase) genetic material, especially DNA from different biological species, and to introduce the resulting hybrid DNA into an organism in order to form new combinations of heritable genetic material.
Related Theory
Restriction endonucleases cut DNA molecules at specific places into many smaller fragments called restriction fragments.

Topic: Biology, Biotechnology - Principles and Processes, NEET, NEET 2002
Mannitol is the stored food in of

Options:
A Chara
B Porphyra
C Fucus
D Graciltaria

The correct answer is:
Fucus

Solution:
Fucus belongs to class-Phaeophyceae, in which reserve food is found in form of laminarin, mannitol and oil.
Chara belongs to class-Chlorophyceae, in which reserve food is found in form of starch and oil.
Porphyra and Gracillaria belong to class-Rhodophyceae, in which reserve food is found in form of floridean starch and Galactan- $\mathrm{SO}_4$ polymers.

Topic: Biology, Plant Kingdom, NEET, NEET 2009 (Screening)
Mannitol is the stored food in:

Options:
A Porphyra
B Fucus
C Gracillaria
D Chara

The correct answer is:
Fucus

Solution:
Mannitol is food stored in Fucus. Fucus is a genus of brown alga in the class Phaeophyceae and is found in the intertidal zones of rocky seashores almost everywhere in the world. Primary chemical constituents of this plant include mucilage, algin, mannitol, beta-carotene, zeaxanthin, iodine, bromine, potassium, volatile oils and many other minerals.

Topic: Biology, Plant Kingdom, NEET
Manu, who is a worker in the dump yard, started experiencing nausea, vomiting, headache and loss of appetite for the past few days. On careful history and examination, his doctor came to the conclusion that he suffers from nickel poisoning. Which is the most likely cause of this poisoning?

Options:
A Plastic waste
B Leather waste
C E-waste
D Bio-medical waste

The correct answer is:
E-waste

Solution:
Electronic waste or e- waste is the waste generated from gadgets and electronic equipments. Gadgets like computers, mobile phones, television sets which cannot be repaired and other electronic goods form the Electronic or E-waste. E-waste is disposed off by burying them in landfills or is incinerated. During the recycling of the e waste metals like copper, iron, silicon, nickel and gold are recovered. If this recycling is carried out manually it exposes the workers to the toxic substances which may be present in the e-waste. This may lead to poisoning and can even be fatal if the exposure to the toxic substance is very high.

Topic: Biology, Environmental Issues, NEET
Many diseases can be diagnosed by observing the symptoms in the patient. Which group of symptoms are indicative of pneumonia?

Options:
A Difficulty in respiration, fever, chills, cough, headache
B Constipation, abdominal pain, cramps, blood clots
C Nasal congestion and discharge, cough, constipation, headache
D High fever, weakness, stomach pain, loss of appetite and constipation

The correct answer is:
Difficulty in respiration, fever, chills, cough, headache

Solution:
The symptoms of pneumonia include fever, chills, cough and headache. In severe cases, the lips and finger nails may turn gray to bluish in colour.

Topic: Biology, Human Health and Diseases, NEET
Many diseases can be diagnosed by observing the symptoms in the patient. Which group of symptoms are indicative of pneumonia?

Options:
A Difficulty in respiration, fever, chills, cough, headache
B Constipation, abdominal pain, cramps, blood clots
C Nasal congestion and discharge, cough, sore throat, headache
D High fever, weakness, stomach pain, loss of appetite and constipation.

The correct answer is:
Difficulty in respiration, fever, chills, cough, headache

Solution:
Pneumonia is an infective disease of the lungs where the alveoli are primarily involved. The most common pathogens responsible for pneumonia are bacteria like Streptococcus pneumoniae and Haemophilusinfluenzae. The alveoli get filled up with fluid leading to difficulties in respiration. Symptoms of pneumonia include fever, chills, cough and headache. In severe cases cyanosis may occur i.e. bluish colouration of the lips and finger nails. It can spread through inhalation of droplets or aerosols from an infected person.

Topic: Biology, Human Health and Diseases, NEET
Many elements are found in living organisms either free or in the form of compounds. Which of the following is not found in living organisms?

Options:
A Silicon
B Magnesium
C Iron
D Sodium

The correct answer is:
Silicon

Solution:
Silicon is not found in living organisms.

Topic: Biology, Biomolecules (B), NEET
Many elements are found in living organisms either free or in the form of compounds. Which one of the following is not found at all in living organisms?

Options:
A Silicon
B Magnesium
C Iron
D Sodium

The correct answer is:
Silicon

Solution:
The element which is not found in living organisms, either in free form or in the form of compounds is silicon.
Magnesium, iron and sodium can be found in living organisms in either free form or in form of compounds.

Topic: Chemistry, Biomolecules, NEET
Many hormones are released from various endocrine glands of the body. Match the endocrine glands with the product hormones.

Column I	Column II

X	Hypothalamus	1	Prolactin

Y	Thyroid gland	2	Somatostatin

Z	Pituitary gland	3	Thyroxine

4	MSH

5	ADH

6	Oxytocin

7	Calcitonin

Options:
A X - 2, 5, 6; Y - 3, 7; Z- 1, 4
B X - 2, 6; Y - 3, 7; Z - 1, 4, 5
C X - 5, 6; Y - 3, 7; Z - 1, 2, 4
D X - 1, 5, 6; Y - 3, 7; Z - 2, 4

The correct answer is:
X - 2, 5, 6; Y - 3, 7; Z- 1, 4

Solution:
The hypothalamic gland is known to secrete two kinds of hormones: Releasing hormones like GnRH and inhibiting hormones, like somatostatin.
The thyroid gland is responsible for the production and release of thyroxine and triiodothyronine.
The pituitary gland is divided into two portions called the adenohypophysis and neurohypophysis.
Hormones of the adenohypophysis include:
Pars distalis (anterior pituitary) - Growth hormone (GH), Prolactin (PRL), Thyroid-stimulating hormone (TSH), Adrenocorticotrophic hormone (ACTH), Luteinizing hormone (LH) and Follicle-stimulating hormone (FSH).
Pars intermedia - Melanocyte stimulating hormone (MSH).
Hormones of the neurohypophysis (Pars nervosa or Posterior pituitary) include oxytocin and vasopressin (or ADH).

Topic: Biology, Chemical Coordination and Integration, NEET
Many of the diagrams given in Fig show magnetic field lines (thick lines in the figure) wrongly. Point out what is wrong with them.

Options:
A a, b, c, d, f
B a, b, d, e, f, g
C a, b, d, e, g
D a, b, d, f, g

The correct answer is:
a, b, d, f, g

Solution:
Correct Option is : (D)
a, b, d, f, g

Topic: Chemistry, Magnetic Properties of Matter, NEET
Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as

Options:
A Plastidome
B Polyhedral bodies
C Polysome
D Nucleosome

The correct answer is:
Polysome

Solution:
Polysome is a string of ribosomes associated with a single mRNA. Polysome helps to produce a number of copies of the same polypeptide.

The nucleosome is the unit of eukaryotic DNA that consists of a DNA segment wrapped around a core of eight histone proteins. Nucleosome chain gives a 'beads on a string' appearance under an electron microscope.

Plastidome refer to all the plastids of a cell which work as a functional unit.

Polyhedral bodies or carboxysomes are present in several groups of autotrophic bacteria that assimilate inorganic carbon via the Calvin cycle, e.g. Cyanobacteria.

Topic: Biology, Cell - The Unit of Life, NEET, NEET 2018
Marble acts as a sink for

Options:
A Metallic pollutants
B NH3 pollutants
C Acidic pollutants
D None of these

The correct answer is:
Acidic pollutants

Solution:
CaCO 3 + H 2 SO 4 → CaSO 4 + H 2 O + CO 2 Marble Acid

Topic: Chemistry, Environmental Chemistry, NEET
Marchantia is

Options:
A monoecious plant
B dioecious in nature
C heterosporous plants
D phanerogamous plant

The correct answer is:
dioecious in nature

Solution:
Monoecious are plants having both sexes in the same plant and dioecious is a term used when the male and female reproductive organs are present in different plants.
Marchantia is an example of a liverwort, having a thalloid and whose male and female sex organs are produced on different thalli. Heterosporous are plants which produce two types of spores having different size and sex. Phanerogams are the seed-bearing plants or spermatophytes.

Topic: Biology, Plant Kingdom, NEET
Marijuana is obtained from

Options:
A Ergot of fungus
B Cannabis sativa
C Erythroxylum coca
D Atropa belladona

The correct answer is:
Cannabis sativa

Solution:
Cannabinoids are a group of chemicals, which interact with cannabinoid receptors present principally in the brain. Natural cannabinoids are obtained from the inflorescences of the plant Cannabis sativa. The flower tops, leaves, and the resin of Cannabis plants are used in various combinations to produce marijuana, hashish, charas, and ganja. Generally taken by inhalation and oral ingestion, these are known for their effects on cardiovascular system of the body.

Topic: Biology, Human Health and Diseases, NEET
Mark out the correct statement among the following.

Options:
A Aqueous AgNO3 solution can be stored in a copper bowl.
B Aqueous CuSO4 solution can be stored in a silver bowl.
C Cu , Ag can release hydrogen gas from dil HCl .
D H2 cannot reduce Cu2+ and Ag+ in the form of metals.

The correct answer is:
Aqueous CuSO4 solution can be stored in a silver bowl.

Solution:
Aq CuSO4 Solution can be stored in a silver bowl because Ag is less reactive than Cu

Topic: Chemistry, Electrochemistry, NEET
Mark out the correct statement with respect to thermal radiations emitted by a black body

Options:
A At a given temperature, energy is distributed non-uniformly among different wavelengths
B As temperature of body is increased, energy content of all wavelengths decreases
C The product of EÎ» (spectral energy) with ÎÎ» (spectral width), for all equal ÎÎ»′ is the same
D The thermal radiation emitted by a hot body is a discrete spectra

The correct answer is:
At a given temperature, energy is distributed non-uniformly among different wavelengths

Solution:
At a given temperature, energy is distributed non-uniformly among different wavelengths
As temperature of body is increased, energy content of all wavelengths increases

Topic: Physics, Atomic Physics, NEET
Mark the correct option.

Options:
A Turner's syndrome - 45+ XO
B Thalassemia - 44+YO
C Klinefelter syndrome - 44+ XXY
D Phenylketonuria -Â 44+XYY

The correct answer is:
Klinefelter syndrome - 44+ XXY

Solution:
Syndrome	Chromosomal set up	Number of chromosomes

1. Down’s Syndrome	Trisomy of chromosome number 21	47

2. Klinefelter’s syndrome	Trisomy of sex chromosome (44 + XXY)	47

3. Turner’s syndrome	Monosomy of sex chromosome (44 + XO)	45

Topic: Biology, Principles of Inheritance and Variation, NEET
Mark the correct option about prosthetic group and co-enzyme.

Prosthetic group	Co-enzyme

Nature	Mode of action	Nature	Mode of action

(i)	organic	Tightly binds to protein part of the enzyme	inorganic	Transient association with protein part of the enzyme

(ii)	inorganic	Transient association with protein part of an enzyme	organic	Tightly binds to protein part of an enzyme

(iii)	organic	Tightly binds to protein part of the enzyme	organic	Transient association with protein part of the enzyme

(iv)	inorganic	Transient association with protein part of an enzyme	inorganic	Tightly binds to protein part of an enzyme

Options:
A i
B ii
C iii
D iv

The correct answer is:
iii

Solution:
Prosthetic groups are organic compounds and are distinguished from other cofactors in that they are tightly bound to the apoenzyme. For example, in peroxidase and catalase, which catalyze the breakdown of hydrogen peroxide to water and oxygen, haem is the prosthetic group and it is a part of the active site of the enzyme. Co-enzymes are also organic compounds but their association with the apoenzyme is only transient, usually occurring during the course of catalysis. Furthermore, co-enzymes serve as co-factors in a number of different enzyme catalyzed reactions. The essential chemical components of many coenzymes are vitamins, e.g., coenzyme nicotinamide adenine dinucleotide (NAD) and NADP contain the vitamin niacin. Catalytic activity is lost when the co-factor is removed from the enzyme which testifies that they play a crucial role in the catalytic activity of the enzyme.

Topic: Chemistry, Biomolecules, NEET