datavorous/entrance-exam-dataset huggingface dataset:
In species–area relationship among frugivorous birds in the tropical forests of different continents, the regression co-efficient is

Options:
A 0.1 to 0.2
B 0.6 to 1
C 1.15
D 2.15 to 3

The correct answer is:
1.15

Solution:
In speciesâarea relationship, regression co-efficient or Z, lies in the range of 0.1 to 0.2, regardless of the taxonomic group or the region. In the species-area relationships among very large areas like the entire continents, Z values are in the range of 0.6 to 1.2. For frugivorous birds in the tropical forests of different continents, the value of Z is 1.15.

Topic: Biology, Biodiversity and its Conservation, NEET
In Spirogyra, meiosis occurs during

Options:
A Vegetative reproduction
B Zoospore formation
C Zygospore formation
D Gamete formation

The correct answer is:
Zygospore formation

Solution:
Sporophytic generation is represented only by the one-celled zygote. There are no free-living sporophytes. Meiosis in the zygote results in the formation of haploid spores. The haploid spores divide mitotically and form the gametophyte. The dominant, photosynthetic phase in such plants is the free-living gametophyte. This kind of life cycle is termed as haplontic. Many algae such as Volvox, Spirogyra and some species of Chlamydomonas represent this pattern.

Topic: Biology, Plant Kingdom, NEET
In sponges, asexual reproductive structure is

Options:
A Endogenous budding
B Exogenous budding
C Conidia
D Zoospores

The correct answer is:
Endogenous budding

Solution:
Common asexual reproductive structures are conidia (Penicillium), buds (Hydra), gemmules/endogenous budding (sponge), and zoospores (fungi).

Topic: Biology, Reproduction in Organisms, NEET
In sponges, the water enters the body through minute pores known as

Options:
A Osculum
B Ostia
C Spongocoel
D Spicules

The correct answer is:
Ostia

Solution:
Sponges have a water transport or canal system Water enters their body through minute pores called ostia. It then enters a central cavity called spongocoel and leaves the body through the osculum. Spicules is the skeleton which supports the body.

Topic: Biology, Animal Kingdom, NEET
In square planar complexes of the type MABXL, how many cis isomers are possible?

Options:
A One
B Two
C Three
D Four

The correct answer is:
Two

Solution:
Square planar complexes of the type MABXL can show two cis isomers.

Topic: Chemistry, Coordination Compounds, NEET
In steam distillation, what type of substances are separated?

Options:
A Substances with similar boiling points
B Substances with different boiling points
C Substances that are steam volatile and immiscible with water
D Substances that are steam non-volatile

The correct answer is:
Substances that are steam volatile and immiscible with water

Solution:
Steam distillation is used to separate substances that are steam volatile and immiscible with water.

Topic: Chemistry, General Organic Chemistry, NEET
In striped muscles, cross bridges rapidly dissociate when

Options:
A ADP and inorganic phosphate separates from myosin head
B ATP attaches to the myosin head
C Calcium binds to tropomyosin
D Troponin tropomyosin complex masks the active binding sites for myosin on the actin filaments

The correct answer is:
ATP attaches to the myosin head

Solution:
Actin–myosin bridges dissociate when ATP binds to myosin head and its affinity for actin decreases.

Topic: Biology, Locomotion and Movement, NEET
In sublimation, what is the key characteristic of the compounds that can be separated?

Options:
A They have low melting points.
B They have high boiling points.
C They have high sublimation points.
D They are all metals.

The correct answer is:
They have high sublimation points.

Solution:
Compounds that can be separated by sublimation have high sublimation points, allowing them to change directly from solid to vapor when heated.

Topic: Chemistry, General Organic Chemistry, NEET
In sublimation, what state are the impurities left in after the purification process?

Options:
A Liquid
B Gas
C Solid
D Vapour

The correct answer is:
Solid

Solution:
Impurities are left in the solid state after the sublimation process, while the desired compound changes to vapor.

Topic: Chemistry, General Organic Chemistry, NEET
In substituted phenols, where does the presence of an electron-withdrawing group like a nitro group have the most pronounced effect on increasing acidic strength?

Options:
A Ortho position
B Meta position
C Para position
D All positions equally

The correct answer is:
Ortho position

Solution:
The presence of an electron-withdrawing group like a nitro group has the most pronounced effect on increasing acidic strength when it is at the ortho position in substituted phenols.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
In succulent plants, the stomata open in the night and close in the day. Which among the following would be the best hypothesis to explain the mechanism of stomatal action in the night only?

Options:
A CO2 accumulates, reduces pH, stimulate enzymes resulting in accumulation of sugars.
B Increases in CO2 concentration, conversion of organic acids into starch resulting in the increased conversion into sugars resulting in K+ transport.
C Low CO2 concentration accumulates organic acids resulting in the increased concentration of cell sap.
D CO2 used up, increase pH results in accumulation of sugars.

The correct answer is:
Increases in CO2 concentration, conversion of organic acids into starch resulting in the increased conversion into sugars resulting in K+ transport.

Solution:
In CAM plants stomata open at night. In these plants night acidification occurs. i.e., malic acid is synthesised during night due to incomplete oxidation of carbohydrates.
In night, 2 C 6 H 1 2 O 6 + 3 O 2 â 3 C 4 H 6 O 5 + 3 H 2 O
malic acid â leads to opening of stomata
At night malic acid formed in guard cells dissociates into H+ and malate ions. K+ ion exchange from subsidiary cells with H+ ions. Thus due to accumulation of K+ ions osmotic pressure of guard cells increases, endosmosis occurs and guard cells become turgid due to which stomata opens. The malic acid at day time breaks into CO2 and pyruvic acid thus increasing the concentration of CO2 in mesophyll cells. This is utilised in Calvin cycle to form sugar which is finally converted into starch.

Topic: Biology, Photosynthesis in Higher Plants, NEET
In sugarcane plant ${ }^{14} \mathrm{CO}_2$ is fixed in malic acid, in which the enzyme that fixes $\mathrm{CO}_2$ is:

Options:
A ribulose biphosphate carboxylase
B phosphoenol pyruvic acid carboxylase
C ribulose phosphate kinase
D fructose phosphatase

The correct answer is:
phosphoenol pyruvic acid carboxylase

Solution:
In $\mathrm{C}_4$ plant, in chloroplasts of mesophyll cells PEP carboxylase is the key enzyme used in carbon fixation. Due to this enzyme PEP $+\mathrm{CO}_2$ converted into oxaloacetic acid.
Caution
Sugarcane is a $C_2$ plant.

Topic: Biology, Photosynthesis in Higher Plants, NEET, NEET 2003
In sugarcane plant, which of the following enzymes is responsible for the fixation of 14CO2 in malic acid?

Options:
A Fructose phosphatase
B Ribulose bisphosphate carboxylase
C Phosphoenol pyruvic acid carboxylase
D Ribulose phosphate kinase

The correct answer is:
Phosphoenol pyruvic acid carboxylase

Solution:
In C4-plants, CO2 is picked up by phosphoenol-Pyruvate (PEP) and the reaction being catalyzed by PEP carboxylase.
CO 2 + PEP ⟶ Mesophyll cells of C 4 - plant PEP carboxylase Oxalo acetic acid ⟶ dehydrogenase NADPH Malic acid + NADP +

Topic: Biology, Photosynthesis in Higher Plants, NEET
In sulphur estimation, 0.157 g of an organic compound gave 0.4813 g of barium sulphate. What is the percentage of sulphur in the compound?

Options:
A Percentage of sulphur= 74.36%
B Percentage of sulphur= 26.18%
C Percentage of sulphur= 65.10%
D Percentage of sulphur= 42.10%

The correct answer is:
Percentage of sulphur= 42.10%

Solution:
Correct Option is : (D)
Percentage of sulphur= 42.10%

Topic: Chemistry, General Organic Chemistry, NEET
In sunflower stem, the pericycle is present in the form of patches and they are formed by

Options:
A Parenchmatous cell
B Sclerenchymatous cells
C Collenchymatous cells
D Both a and b

The correct answer is:
Sclerenchymatous cells

Solution:
Sclerenchyma patches present outside the vascular bundle in sunflower stem T.S. is called bundle cap. Bundle cap is derived from pericycle. Thus pericycle is present as patches of sclerenchyma as bundle cap.

Topic: Biology, Anatomy of Flowering Plants, NEET
In sweet peas, genes C and P are necessary for colour in flowers. The flowers are white in the absence of either or both the genes. What will be the percentage of coloured flowers in the offspring of the cross Ccpp × ccPp?

Options:
A 100%
B 75%
C 25%
D 50%

The correct answer is:
25%

Solution:
Parents: Ccpp × ccPp
Male gametes are Cp, cp
Female gametes are cP, cp.
​
Presence of either C and P gene is required for the flower to exhibit colour. Thus, a white flower has the genotype is ccpp.

Topic: Biology, Principles of Inheritance and Variation, NEET
In sweet peas, genes C and P are necessary for colour in flowers. The flowers are white in the absence of either or both the genes. What will be the percentage of coloured flowers in the offspring of the cross Ccpp x ccPp?

Options:
A 75%
B 25%
C 100%
D 50%

The correct answer is:
25%

Solution:
It is a dihybrid cross.
We know that Ccpp x ccPp
Male gametes are Cpcp
Female gemetes are cPcp
Hence, ratio = 1 (colour) : 3 (white)
i.e., 25% coloured flower.

Cp	cp

cP	CcPp
colour	cPcp
white

cp	Cpcp
white	cpcp
white

Topic: Biology, Principles of Inheritance and Variation, NEET
In Swiss cheese, large holes are formed due to the production of a large amount of CO2 by the bacterium

Options:
A Aspergillus niger
B Propionibacterium shermanii
C Clostridium botulinum
D None of the above

The correct answer is:
Propionibacterium shermanii

Solution:
The large holes in Swiss cheese are due to production of a large amount of CO2 by a bacterium named Propionibacterium shermanii.

Topic: Biology, Biotechnology and Its Applications, NEET
In te given reaction

[X] will be

Options:
A Erythro-2,3-dibromobutane
B Threo-2,3- dibromobutane
C 1 : 1 mixture of Erythro-2,3-dibromo butane and threo-2,3-dibromobutane
D 2 : 1 mixture of erythro-2,3-dibromobutane and threo-2,3-dibromobutane

The correct answer is:
Threo-2,3- dibromobutane

Solution:
It is cis-but-2-ene which on reaction with Br2 (anti addition) give racemic mixture of product as follows
These dibromo derivatives are threo forms as the Br-groups are in anti forms.

Topic: Chemistry, Solutions, NEET
In telophase I

Options:
A Nuclear envelope breaks down
B The nuclear membrane separates the nuclear DNA from the cytoplasm
C Each daughter cell has half the number of chromosomes
D Both (b) and (c)

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

Solution:
The chromosomes uncoil to form chromatin. The spindle fibers disappear. The nuclear membrane and nucleolus reappear and cytokinesis follows to produce two cells. The first meiotic division effectively ends when the chromosomes arrive at the poles. Each daughter cell now has half the number of chromosomes but each chromosome consists of a pair of chromatids.

Topic: Biology, Cell Cycle and Cell Division, NEET
In temperate regions, during the spring season, cambium is very active and produces a large number of xylary elements having vessels with wider cavities; wood formed in this way is called ______.

Options:
A heart wood
B autumn wood
C sap wood
D early wood

The correct answer is:
early wood

Solution:
The environmental and physiological factors influence the cambium activity, due to which the climatic conditions in the temperate regions which are not uniform results in the cambium changes. In the spring season, the cambium activity increases to a great extent and a large number of xylary elements are produced, having vessels with wider cavities and the name given to this wood is the springwood or earlywood. During winters, the cambium becomes less active and the xylem vessels formed have a narrow cavity known as the autumn wood or the latewood.

Topic: Biology, Anatomy of Flowering Plants, NEET
In terms of band theory, what is the difference between a conductor and a semiconductor?

Options:
A Conductors have a completely filled valence band and a partially filled conduction band, while semiconductors have a partially filled valence band and an empty conduction band.
B Conductors have a completely filled valence band and a partially filled conduction band, while semiconductors have a completely filled valence band and an empty conduction band.
C Conductors have a partially filled valence band and an empty conduction band, while semiconductors have a completely filled valence band and an empty conduction band.
D Conductors have a partially filled valence band and a partially filled conduction band, while semiconductors have a completely filled valence band and an empty conduction band.

The correct answer is:
Conductors have a completely filled valence band and a partially filled conduction band, while semiconductors have a partially filled valence band and an empty conduction band.

Solution:
Correct Option is : (A)
Conductors have a completely filled valence band and a partially filled conduction band, while semiconductors have a partially filled valence band and an empty conduction band.

Topic: Chemistry, Solid State, NEET
In terms of band theory, what is the difference between a conductor and an insulator?

Options:
A Conductors have a completely filled valence band and an empty conduction band, while insulators have a partially filled valence band.
B Conductors have a completely filled valence band and a partially filled conduction band, while insulators have a completely filled valence band and an empty conduction band.
C Conductors have a partially filled valence band and an empty conduction band, while insulators have a completely filled valence band and an empty conduction band.
D Conductors have a partially filled valence band and a partially filled conduction band, while insulators have a completely filled valence band and an empty conduction band.

The correct answer is:
Conductors have a completely filled valence band and a partially filled conduction band, while insulators have a completely filled valence band and an empty conduction band.

Solution:
Correct Option is : (B)
Conductors have a completely filled valence band and a partially filled conduction band, while insulators have a completely filled valence band and an empty conduction band.

Topic: Chemistry, Solid State, NEET
In terms of BOD, what is the characteristic of highly polluted water?

Options:
A BOD value less than 5 ppm
B BOD value exactly 10 ppm
C BOD value greater than 17 ppm
D BOD value varies depending on temperature

The correct answer is:
BOD value greater than 17 ppm

Solution:
Highly polluted water typically has a BOD value of greater than 17 ppm.

Topic: Chemistry, Environmental Chemistry, NEET
In terms of Charles’ law, Why –273 °C is the lowest possible temperature?

Options:
A According to Charles' law, at -273 °C, the volume of gas would theoretically become zero, meaning there would be no space for molecules to occupy, making it the lowest possible temperature.
B Charles' law defines -273 °C as the point at which gases lose their kinetic energy and cease to exhibit any volume or pressure.
C Charles' law states that -273 °C is the temperature at which all molecular motion comes to a complete halt, rendering it the lowest achievable temperature.
D In Charles' law, -273 °C is considered absolute zero, as it represents the point at which the volume of a gas would theoretically approach infinity.

The correct answer is:
According to Charles' law, at -273 °C, the volume of gas would theoretically become zero, meaning there would be no space for molecules to occupy, making it the lowest possible temperature.

Solution:
Correct Option is : (A)
According to Charles' law, at -273 °C, the volume of gas would theoretically become zero, meaning there would be no space for molecules to occupy, making it the lowest possible temperature.

Topic: Chemistry, States of Matter, NEET
In terms of chemical equilibria, what does "net reaction" refer to?

Options:
A The overall reaction rate
B The change in the concentration of products
C The reaction's progress toward completion
D The sum of all chemical reactions in a system

The correct answer is:
The reaction's progress toward completion

Solution:
In the context of chemical equilibria, "net reaction" refers to the progress of the reaction toward completion as it shifts to reach a new equilibrium.

Topic: Chemistry, Chemical Equilibrium, NEET
In terms of descending order of percentage proportions of leukocytes in human blood, which one is correct?

Options:
A Neutrophils â lymphocytes â monocytes â eosinophils â basophils
B Neutrophils â basophilsÂ â lymphocytes â eosinophils â monocytes
C Neutrophils â monocytes â lymphocytesÂ â eosinophilsÂ â basophils
D NeutrophilsÂ â eosinophilsÂ â basophilsÂ â lymphocytesÂ â monocytes

The correct answer is:
Neutrophils â lymphocytes â monocytes â eosinophils â basophils

Solution:
Neutrophils: 62%
Lymphocytes: 30%
Monocytes: 5.3%
Eosinophils: 2.3%
Basophils: 0.4%

Topic: Biology, Body Fluids and Circulation, NEET
In terms of energy released per mole, how does dihydrogen compare to liquid propane (LPG)?

Options:
A Dihydrogen releases more energy per mole than LPG.
B Dihydrogen releases less energy per mole than LPG.
C Dihydrogen and LPG release roughly the same energy per mole.
D The energy released by dihydrogen per mole cannot be compared to LPG.

The correct answer is:
Dihydrogen releases more energy per mole than LPG.

Solution:
Dihydrogen releases more energy per mole compared to liquid propane (LPG).

Topic: Chemistry, Hydrogen, NEET
In terms of K and spontaneity, what does it mean when ∆Go is negative?

Options:
A The reaction is non-spontaneous.
B The reaction is at equilibrium.
C The reaction is spontaneous and favors products.
D The reaction is spontaneous and favors reactants.

The correct answer is:
The reaction is spontaneous and favors products.

Solution:
When ∆Go is negative, it implies a spontaneous reaction that favors the products.

Topic: Chemistry, Chemical Equilibrium, NEET
In terms of mass for mass basis, how does the energy release of dihydrogen compare to petrol?

Options:
A Dihydrogen releases less energy than petrol.
B Dihydrogen releases about the same energy as petrol.
C Dihydrogen releases more energy than petrol.
D Dihydrogen is not used as a fuel.

The correct answer is:
Dihydrogen releases more energy than petrol.

Solution:
On a mass for mass basis, dihydrogen can release more energy than petrol, approximately three times more.

Topic: Chemistry, Hydrogen, NEET
In terms of oxidizing strength, how does hot concentrated sulphuric acid compare to phosphoric and nitric acids?

Options:
A Weaker than both phosphoric and nitric acids
B Stronger than both phosphoric and nitric acids
C Intermediate between phosphoric and nitric acids
D Hot concentrated sulphuric acid does not act as an oxidizing agent

The correct answer is:
Intermediate between phosphoric and nitric acids

Solution:
Hot concentrated sulphuric acid is intermediate in oxidizing strength between phosphoric and nitric acids. It acts as a moderately strong oxidizing agent.**

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
In terms of percentage of the total cellular mass, the correct arrangement of biomolecules in the descending order is

Options:
A Carbohydrates > Lipids > Nucleic Acids
B Nucleic Acids > Carbohydrates > Lipids
C Nucleic acids > Lipids > Carbohydrates
D Carbohydrates > Nucleic acid > Lipids

The correct answer is:
Nucleic Acids > Carbohydrates > Lipids

Solution:
As per the percentage of the total cellular mass, the average composition of cells is as follows:
Water: 70%–90%, proteins: 10%–15%, nucleic acids: 5%–7%, carbohydrates: 3%, lipids: 2% and ions: 1.

Topic: Chemistry, Biomolecules, NEET
In terms of period and group, where would you locate the element with Z = 114?

Options:
A Period 6, Group 14
B Period 7, Group 14
C Period 6, Group 16
D Period 7, Group 16

The correct answer is:
Period 7, Group 14

Solution:
Correct Option is : (B)
Period 7, Group 14

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
In terms of permeability, the cell wall and plasmalemma are:

Options:
A permeable and differentially permeable respectively
B both semipermeable or selectively permeable
C semipermeable and differentially permeable
D both differentially permeable

The correct answer is:
permeable and differentially permeable respectively

Solution:
The cell wall present in the plant cells are made up of cellulose and is freely permeable to small molecules. The plasmalemma is the plasma membrane which is differentially permeable or semipermeable and allows the movement of selected molecules in and out of the cell. These membranes also function to protect the cell from the external environment.

Topic: Biology, Cell - The Unit of Life, NEET
In terms of physical properties, which group of compounds is most similar to alkynes?

Options:
A Alkanes
B Alkenes
C Alcohols
D Aldehydes

The correct answer is:
Alkenes

Solution:
In terms of physical properties, alkynes are most similar to alkenes, as both are unsaturated hydrocarbons.

Topic: Chemistry, Hydrocarbons, NEET
In terms of quantity, the correct chronological order of blood cells is

Options:
A Erythrocyte > thrombocyte > neutrophil > lymphocyte > monocyte > eosinophil > basophil
B Erythrocyte > thrombocyte > monocyte > neutrophil > lymphocyte > eosinophil > basophil
C Erythrocyte > neutrophil > lymphocyte > monocyte > eosinophil > basophil > thrombocyte
D Erythrocyte > thrombocyte > neutrophil > lymphocyte > eosinophil > monocyte > basophil

The correct answer is:
Erythrocyte > thrombocyte > neutrophil > lymphocyte > monocyte > eosinophil > basophil

Solution:
Erythrocyte count is about 5 million per cubic mm of blood. Platelet count is about 2.5â4.5 lakhs per cubic mm. Leucocytes are 5â9 thousand per cubic mm. Neutrophils consist of 54%â62% of leucocytes, lymphocytes consist of 25%â33% of leucocytes, monocytes consist of 3%â9% of leucocytes, eosinophils consist of 3% of leucocytes and basophils consist of 0.5% of leucocytes.

Topic: Biology, Body Fluids and Circulation, NEET
In terms of symmetry, the flower of which plant resembles the flowers of Cassia?

Options:
A Datura
B Mustard
C Gulmohur
D Tomato

The correct answer is:
Gulmohur

Solution:
When a flower can be divided into two similar halves only in one particular vertical plane, it is zygomorphic, e.g., pea, gulmohur, bean, Cassia. When a flower can be divided into two equal radial halves in any radial plane passing through the centre, it is said to be actinomorphic, e.g., mustard, datura, chilli. A flower is asymmetric (irregular) if it cannot be divided into two similar halves by any vertical plane passing through the centre, as in canna.

Topic: Biology, Morphology of Flowering Plants, NEET
In tetrahedral complexes, are low spin configurations commonly observed?

Options:
A Yes, they are frequently observed.
B No, they are rarely observed.
C It depends on the metal-ligand combination.
D It depends on the metal's position in the periodic table.

The correct answer is:
No, they are rarely observed.

Solution:
In tetrahedral complexes, low spin configurations are rarely observed because the orbital splitting energies are not sufficiently large to force pairing.

Topic: Chemistry, Coordination Compounds, NEET
In tetrahedral coordination entities, how does the d orbital splitting compare to the octahedral field splitting?

Options:
A It is larger.
B It is the same.
C It is smaller.
D It is inverted.

The correct answer is:
It is smaller.

Solution:
In tetrahedral coordination entities, the d orbital splitting is smaller compared to the octahedral field splitting.

Topic: Chemistry, Coordination Compounds, NEET