datavorous/entrance-exam-dataset huggingface dataset:
What is the purpose of emasculation in plant breeding?

Options:
A To prevent contamination of stigma
B To allow pollination of unisexual flowers
C To promote growth of the plant
D To increase the size of the flowers

The correct answer is:
To prevent contamination of stigma

Solution:
Emasculation is the removal of anthers from the flower bud before the anther dehisces using a pair of forceps, to make sure that only the desired pollen grains are used for pollination and the stigma is protected from contamination (from unwanted pollen).

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What is the purpose of ethidium bromide staining?

Options:
A To extract the DNA fragments from agarose gel
B To join the DNA fragments with cloning vectors
C To visualize the separated DNA fragments
D To purify the DNA fragments

The correct answer is:
To visualize the separated DNA fragments

Solution:
The separated DNA fragments can be visualized only after staining the DNA with ethidium bromide followed by exposure to UV radiation.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the purpose of evaluating the newly selected lines in research fields?

Options:
A To test the performance of the plants in farmers' fields
B To evaluate the yield and agronomic traits of the plants
C To select the plants that have the desired character combination
D To achieve uniformity in the characters of the plants

The correct answer is:
To evaluate the yield and agronomic traits of the plants

Solution:
The newly selected lines are evaluated for their yield and other agronomic traits of quality, disease resistance, etc. in the research fields by recording their performance under ideal fertiliser application, irrigation, and other crop management practices.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is the purpose of evaporating the excess solvent in the production of transparent soaps?

Options:
A To increase soap production
B To enhance the soap's fragrance
C To make the soap more opaque
D To achieve transparency

The correct answer is:
To achieve transparency

Solution:
Evaporating the excess solvent in the production of transparent soaps is done to achieve transparency.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is the purpose of exposing or injecting a patient with very small doses of possible allergens in determining the cause of an allergy?

Options:
A To reduce symptoms quickly
B To attack self-cells
C To study the reactions
D To provide a protected environment

The correct answer is:
To study the reactions

Solution:
By exposing or injecting a patient with very small doses of possible allergens, the cause of an allergy can be determined by studying the reactions.

Topic: Biology, Human Health and Diseases, NEET
What is the purpose of expressing the biomass of a species in terms of fresh or dry weight?

Options:
A To compare the biomass of different species
B To compare the biomass of the same species in different areas
C To compare the biomass of the same species at different times
D All of the above

The correct answer is:
All of the above

Solution:
The biomass of a species is expressed in terms of fresh or dry weight to compare the biomass of different species, the same species in different areas, or the same species at different times.

Topic: Biology, Ecosystem, NEET
What is the purpose of extracting compounds from living tissues?

Options:
A To classify them biologically
B To identify functional groups
C To isolate and purify a compound
D To determine the molecular formula and structure

The correct answer is:
To isolate and purify a compound

Solution:
The purpose of extracting compounds from living tissues is to isolate and purify a compound. This is achieved by subjecting the extract to various separation techniques.

Topic: Biology, Biomolecules (B), NEET
What is the purpose of floating cover in the biogas plant?

Options:
A To prevent the escape of biogas
B To prevent the entry of air into the plant
C To keep the slurry warm
D To prevent the formation of sludge

The correct answer is:
To prevent the escape of biogas

Solution:
The floating cover is placed over the slurry in the biogas plant, which keeps on rising as the gas is produced due to microbial activity. This cover prevents the escape of biogas.

Topic: Biology, Microbes in Human Welfare, NEET
What is the purpose of gamete transfer in sexual reproduction?

Options:
A To form a new organism
B To transfer the chromosomes
C To bring the male and female gametes together for fertilisation
D To produce gametes

The correct answer is:
To bring the male and female gametes together for fertilisation

Solution:
After formation, male and female gametes must be physically brought together to facilitate fusion (fertilisation).

Topic: Biology, Reproduction in Organisms, NEET
What is the purpose of GEAC (Genetic Engineering Approval Committee)?

Options:
A To evaluate the morality of human activities that might help or harm living organisms
B To regulate the manipulation of living organisms by the human race
C To make decisions regarding the validity of GM research and the safety of introducing GM-organisms for public services
D To control the problems with patents granted for the usage of living organisms for public services

The correct answer is:
To make decisions regarding the validity of GM research and the safety of introducing GM-organisms for public services

Solution:
The Indian Government has set up GEAC (Genetic Engineering Approval Committee) to make decisions regarding the validity of GM research and the safety of introducing GM-organisms for public services.

Topic: Biology, Biotechnology and Its Applications, NEET
What is the purpose of gel electrophoresis in DNA separation?

Options:
A To form recombinant vector molecule
B To create hydrogen bonds
C To separate DNA fragments based on their size
D To extract agarose gel

The correct answer is:
To separate DNA fragments based on their size

Solution:
Gel electrophoresis is used to separate DNA fragments by applying an electric field and forcing them to move through a medium, such as agarose gel, based on their size.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the purpose of gene therapy?

Options:
A To cure cancer
B To treat a genetic disease
C To develop vaccines
D To perform surgical procedures

The correct answer is:
To treat a genetic disease

Solution:
The purpose of gene therapy is to treat a genetic disease by inserting normal genes into a person’s cells and tissues to take over the function of the non-functional gene.

Topic: Biology, Biotechnology and Its Applications, NEET
What is the purpose of genetic engineering in the field of biocontrol?

Options:
A To enhance the growth of insect pests
B To make plants more susceptible to attack by insect pests
C To create more potent biocontrol agents
D To make plants resistant to attack by insect pests

The correct answer is:
To make plants resistant to attack by insect pests

Solution:
Through the development of methods of genetic engineering, scientists have introduced B) thuringiensis toxin genes into plants, making them resistant to attack by insect pests.

Topic: Biology, Microbes in Human Welfare, NEET
What is the purpose of genetic modification of crops?

Options:
A To make crops more resistant to pests
B To make crops more tolerant to environmental stresses
C To increase the efficiency of mineral usage by plants
D All of the above

The correct answer is:
All of the above

Solution:
Genetic modification of crops serves various purposes, such as making crops more tolerant to environmental stresses, reducing reliance on chemical pesticides, preventing post-harvest losses, increasing efficiency of mineral usage by plants, and enhancing nutritional

Topic: Biology, Biotechnology and Its Applications, NEET
What is the purpose of grouping species into genera in taxonomic classification?

Options:
A To identify similarities and dissimilarities among the individuals of the same kind of organisms
B To identify the genetic makeup of an individual or group of organisms
C To identify the behavior of an individual or group of organisms
D To aggregate closely related species

The correct answer is:
To aggregate closely related species

Solution:
Genera are aggregates of closely related species, which have more characters in common in comparison to species of other genera.

Topic: Biology, The Living World, NEET
What is the purpose of growing lymphocytes from the blood of a patient in gene therapy for ADA deficiency?

Options:
A To detect mutated genes
B To detect antigens in ELISA
C To deliver functional ADA cDNA into the patient
D To detect antibodies synthesized against pathogen

The correct answer is:
To deliver functional ADA cDNA into the patient

Solution:
As a first step towards gene therapy for ADA deficiency, lymphocytes from the patient's blood are grown in a culture outside the body and a functional ADA cDNA (using a retroviral vector) is introduced into these lymphocytes, which are subsequently returned to the patient.

Topic: Biology, Biotechnology and Its Applications, NEET
What is the purpose of Haryana Kisan Welfare Club created by Ramesh Chandra Dagar?

Options:
A To spread information and help on the practice of integrated organic farming
B To provide chemical fertilisers to farmers
C To provide training to 5000 farmers
D None of the above

The correct answer is:
To spread information and help on the practice of integrated organic farming

Solution:
Enthusiastic about spreading information and help on the practice of integrated organic farming, Dagar has created the Haryana Kisan Welfare CluB)

Topic: Biology, Environmental Issues, NEET
What is the purpose of having recognition sites in a vector for gene cloning?

Options:
A To ligate the vector to a foreign DNA
B To generate multiple fragments of DNA
C To eliminate nontransformants
D To visualize the separated DNA fragments

The correct answer is:
To ligate the vector to a foreign DNA

Solution:
In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. The ligation of alien DNA is carried out at a restriction site present in one of the two antibiotic resistance genes.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the purpose of heating chlorobenzene with NaOH at 623K and 320 atmospheric pressure in the synthesis of phenol?

Options:
A To increase the solubility of chlorobenzene in water.
B To convert chlorobenzene into sodium chloride.
C To facilitate the nucleophilic substitution reaction.
D To dehydrate chlorobenzene.

The correct answer is:
To facilitate the nucleophilic substitution reaction.

Solution:
High temperature and pressure are used to increase the rate of the nucleophilic substitution reaction between chlorobenzene and sodium hydroxide, leading to the formation of sodium phenoxide.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the purpose of heating the reaction mixture in the decarboxylation of benzoic acid with soda lime?

Options:
A To speed up the reaction
B To provide energy for the reaction
C To remove impurities
D To prevent the reaction from occurring

The correct answer is:
To provide energy for the reaction

Solution:
Heating the reaction mixture provides the energy required for the decarboxylation reaction to take place.

Topic: Chemistry, Hydrocarbons, NEET
What is the purpose of histones in eukaryotes?

Options:
A To help organize the DNA into a nucleoid
B To wrap around the DNA in nucleosomes
C To form a chromatin structure
D To prevent the entry of pathogens

The correct answer is:
To wrap around the DNA in nucleosomes

Solution:
The negatively charged DNA in eukaryotes is wrapped around positively charged histones, organized into histone octamers, to form nucleosomes, which is the basic unit of chromatin structure.

Topic: Biology, Molecular Basis of Inheritance, NEET
What is the purpose of hybridization in plant breeding?

Options:
A To create purelines
B To combine the desirable characters from two different plants
C To evaluate the germplasm
D To collect the pollen grains from the desirable plant

The correct answer is:
To combine the desirable characters from two different plants

Solution:
The purpose of hybridization in plant breeding is to combine the desirable characters from two different plants.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is the purpose of immunotherapy in cancer treatment?

Options:
A To avoid detection and destruction of tumor cells by the immune system
B To help in destroying the tumor by activating the immune system
C To increase the survival rate of the patient
D To reduce the side effects of chemotherapy

The correct answer is:
To help in destroying the tumor by activating the immune system

Solution:
Tumor cells avoid detection and destruction by the immune system, so patients are given substances like biological response modifiers, such as α-interferon, to activate their immune system and help destroy the tumor.

Topic: Biology, Human Health and Diseases, NEET
What is the purpose of impregnating filter paper with collodion solution in ultrafiltration?

Options:
A To increase the size of pores
B To stop the flow of colloidal particles
C To decrease the size of pores
D To separate solvent and solutes

The correct answer is:
To stop the flow of colloidal particles

Solution:
Impregnating filter paper with collodion solution in ultrafiltration is done to stop the flow of colloidal particles.

Topic: Chemistry, Surface Chemistry, NEET
What is the purpose of in situ conservation?

Options:
A To protect species at risk of extinction in the wild.
B To protect a specific region's biodiversity.
C To save the entire ecosystem.
D To address global conservation problems.

The correct answer is:
To save the entire ecosystem.

Solution:
The purpose of in situ conservation is to conserve and protect the whole ecosystem and its biodiversity at all levels. This approach saves the entire forest to save the tiger.

Topic: Biology, Biodiversity and its Conservation, NEET
What is the purpose of inbreeding in animal breeding?

Options:
A To develop new breeds
B To eliminate harmful recessive genes
C To reduce fertility
D To increase heterozygosity

The correct answer is:
To eliminate harmful recessive genes

Solution:
Inbreeding exposes harmful recessive genes that are eliminated by selection.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is the purpose of incubating purified DNA with restriction enzyme?

Options:
A To check the progression of digestion
B To prepare recombinant DNA
C To charge the DNA molecule
D To release DNA from the cell membranes

The correct answer is:
To prepare recombinant DNA

Solution:
The incubation of purified DNA with restriction enzyme helps in cutting the source DNA and the vector DNA, then the cut out ‘gene of interest’ from the source DNA and the cut vector with space are mixed and ligase is added to prepare the recombinant DNA)

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the purpose of insertional inactivation of β-galactosidase gene in recombinant DNA cloning?

Options:
A To produce blue color in the presence of a chromogenic substrate
B To differentiate recombinants from non-recombinants
C To simplify the selection of recombinants
D To eliminate nontransformants

The correct answer is:
To differentiate recombinants from non-recombinants

Solution:
The presence of a chromogenic substrate gives blue colored colonies if the plasmid in the bacteria does not have an insert. Presence of insert results into insertional inactivation of the β-galactosidase gene and the colonies do not produce any color, these are identified as recombinant colonies, thus helping to differentiate recombinants from non-recombinants.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the purpose of intercellular substances in multicellular animals?

Options:
A To provide structural support for the cells
B To transport nutrients and oxygen to the cells
C To perform specific functions
D All of the above

The correct answer is:
All of the above

Solution:
Intercellular substances in multicellular animals serve multiple purposes such as providing structural support for the cells, transporting nutrients and oxygen to the cells, and performing specific functions.

Topic: Biology, Structural Organisation in Animals, NEET
What is the purpose of introducing ligated DNA into recipient cells?

Options:
A To increase the number of antibiotic-resistant cells
B To study the behavior of transformed cells
C To clone genes of interest
D To produce recombinant DNA

The correct answer is:
To clone genes of interest

Solution:
Introducing ligated DNA into recipient cells is one of the methods to clone genes of interest.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the purpose of introducing ligated DNA into recipient cells?

Options:
A To select transformed cells
B To produce a desirable protein
C To multiply alien DNA
D To make recipient cells competent to receive DNA

The correct answer is:
To make recipient cells competent to receive DNA

Solution:
The purpose of introducing ligated DNA into recipient cells is to make recipient cells competent to receive DNA.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the purpose of introducing sex education in schools?

Options:
A To provide correct information to young people about sex:related aspects
B To increase the number of couples with small families
C To reduce the number of medical facilities for all sex:related problems
D To increase awareness about problems due to uncontrolled population growth

The correct answer is:
To provide correct information to young people about sex:related aspects

Solution:
Introducing sex education in schools is encouraged to provide correct information to young people about sex:related aspects and discourage them from believing in myths and misconceptions. Proper information about reproductive organs, adolescence and related changes, safe and hygienic sexual practices, sexually transmitted diseases (STD), AIDS, etC) would help young people lead a reproductively healthy life.

Topic: Biology, Reproductive Health, NEET
What is the purpose of Iproniazid and phenelzine?

Options:
A Inducing sleep
B Inhibiting the degradation of noradrenaline
C Treating anxiety
D Enhancing memory

The correct answer is:
Inhibiting the degradation of noradrenaline

Solution:
Iproniazid and phenelzine are drugs that inhibit the degradation of noradrenaline.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is the purpose of iron-fortified rice variety containing over five times as much iron as in commonly consumed varieties?

Options:
A To reduce the risk of disease
B To improve the nutritional quality of rice
C To increase lifespan
D None of the above

The correct answer is:
To improve the nutritional quality of rice

Solution:
The purpose of iron-fortified rice variety containing over five times as much iron as in commonly consumed varieties is to improve the nutritional quality of rice.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is the purpose of joining lattice points by straight lines in a crystal lattice?

Options:
A To create a pattern of lattice points
B To bring out the geometry of the lattice
C To make the lattice more complex
D To create a random arrangement of lattice points

The correct answer is:
To bring out the geometry of the lattice

Solution:
Lattice points are joined by straight lines in a crystal lattice to bring out the geometry of the lattice, as mentioned in the paragraph.

Topic: Chemistry, Solid State, NEET
What is the purpose of kinetochores?

Options:
A To hold the chromatids together
B To move the chromosomes towards opposite poles
C To radiate out microtubules
D To form the mitotic apparatus

The correct answer is:
To move the chromosomes towards opposite poles

Solution:
The kinetochores are the site where microtubules attach to the chromosomes, pulling the chromosomes towards opposite poles of the cell during mitosis.

Topic: Biology, Cell Cycle and Cell Division, NEET
What is the purpose of lyophilic colloids in the context of lyophobic colloids?

Options:
A Increase dispersion
B Enhance coagulation
C Form protective layers
D Induce solvation

The correct answer is:
Form protective layers

Solution:
Lyophilic colloids, when added to lyophobic sols, form protective layers around lyophobic particles, protecting them from electrolytes.

Topic: Chemistry, Surface Chemistry, NEET
What is the purpose of maize hybrids that have twice the amount of the amino acids, lysine and tryptophan compared to existing maize hybrids?

Options:
A To reduce the risk of disease
B To improve the nutritional quality of maize
C To increase lifespan
D None of the above

The correct answer is:
To improve the nutritional quality of maize

Solution:
The purpose of maize hybrids that have twice the amount of the amino acids, lysine and tryptophan compared to existing maize hybrids is to improve the nutritional quality of maize.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is the purpose of measuring Bi ochemical Oxygen Demand (BOD) in sewage water?

Options:
A To estimate the amount of dissolved salts
B To estimate the amount of biodegradable organic matter
C To measure the amount of toxic metal ions
D To measure the amount of organic compounds

The correct answer is:
To estimate the amount of biodegradable organic matter

Solution:
BOD is used to estimate the amount of biodegradable organic matter in sewage water.

Topic: Biology, Environmental Issues, NEET
What is the purpose of meiosis?

Options:
A To produce diploid daughter cells
B To produce haploid daughter cells
C To produce multinucleate cells
D To increase the chromosome number

The correct answer is:
To produce haploid daughter cells

Solution:
Meiosis reduces the chromosome number by half, resulting in the production of haploid daughter cells.

Topic: Biology, Cell Cycle and Cell Division, NEET
What is the purpose of meristem removal in tissue culture?

Options:
A To produce somatic hybrids
B To produce virus-free plants
C To isolate naked protoplasts
D To obtain genetic similarity among plants

The correct answer is:
To produce virus-free plants

Solution:
Scientists can remove the meristem of a diseased plant and grow it in vitro to obtain a virus-free plant.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is the purpose of mixing Bacillus thuringiensis with water?

Options:
A To enhance its potency
B To make it easier to spread
C To make it more toxic
D To make it less toxic

The correct answer is:
To make it easier to spread

Solution:
Bacillus thuringiensis is available in sachets as dried fragments, which are mixed with water to make it easier to spread on vulnerable plants.

Topic: Biology, Microbes in Human Welfare, NEET
What is the purpose of mixing Fehling solution A and Fehling solution B in equal amounts before the test?

Options:
A To form a blue solution
B To create a reddish brown precipitate
C To enhance the colour of the solution
D To prepare a clear solution

The correct answer is:
To enhance the colour of the solution

Solution:
Mixing Fehling solution A and Fehling solution B in equal amounts enhances the colour of the solution, making it more suitable for the test.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the purpose of mixing Polyblend with bitumen?

Options:
A To increase the water repellant properties of bitumen
B To reduce the price of bitumen
C To decrease road life
D None of the above

The correct answer is:
To increase the water repellant properties of bitumen

Solution:
In collaboration with R.V.College of Engineering and the Bangalore City Corporation, Ahmed Khan proved that blends of Polyblend and bitumen, when used to lay roads, enhanced the bitumen's water repellant properties.

Topic: Biology, Environmental Issues, NEET