datavorous/entrance-exam-dataset huggingface dataset:
Which of the following is correct about seed dormancy?

Options:
A The seed dormancy can be overcome by subjecting the seeds to warm conditions or by application of certain chemicals like gibberellic acid and nitrites.
B An external environment like an impermeable and hard seed coat is responsible for inducing seed dormancy.
C The presence of chemical inhibitors such as phenolic acids and para-ascorbic acid are internal factors that induce dormancy.
D More than one option is correct.

The correct answer is:
The presence of chemical inhibitors such as phenolic acids and para-ascorbic acid are internal factors that induce dormancy.

Solution:
Impermeable and hard seed coat; the presence of chemical inhibitors such as abscisic acids, phenolic acids, para-ascorbic acid; and immature embryos are some of the reasons which cause seed dormancy. Effect of inhibitory substances can be removed by subjecting the seeds to chilling conditions or by application of certain chemicals like gibberellic acid and nitrates.

Topic: Biology, Plant - Growth and Development, NEET
Which of the following is correct about skeletal muscles?

Options:
A They are under the direct control of ANS.
B They are primarily found in hollow organs.
C They are bundled together in a parallel fashion.
D They have a smooth appearance.

The correct answer is:
They are bundled together in a parallel fashion.

Solution:
Characteristics of skeletal muscles:
- These are closely associated with the skeletal components of the body.
- In a typical muscle such as the biceps, striated (striped) skeletal muscle fibres are bundled together in a parallel fashion. A sheath of tough connective tissue encloses several bundles of muscle fibres.
- A type of striated muscles (have striped appearance under the microscope)
- These are primarily involved in locomotory actions and changes of body postures.

Topic: Biology, Structural Organisation in Animals, NEET
Which of the following is correct about the appendicular skeleton?

i. The clavicle articulates with the glenoid cavity.

ii. Pectoral and pelvic girdle bones help in the articulation of the upper and the lower limbs respectively with the axial skeleton.

iii. The clavicle is a triangular flat bone situated in the dorsal part of the thorax between the second and seventh ribs.

iv. There are 8 carpal bones in hand.

Options:
A i, ii and iv
B ii and iv
C ii and iii
D i and iv

The correct answer is:
ii and iv

Solution:
The bones of the limbs along with their girdles constitute the appendicular skeleton. Scapula is a triangular flat bone situated in the dorsal part of the thorax between the second and the seventh ribs. Scapula has a slightly elevated ridge called the spine which projects as a flat, expanded process called the acromion. The clavicle articulates with the Acromion. There are 8 carpal bones in the wrist namely scaphoid, lunate, triquetral, pisiform, trapezium, trapezoid, capitate, and hamate

Topic: Biology, Locomotion and Movement, NEET
Which of the following is correct about the blastocyst?

Options:
A Penetrates endometrium from its embryonic pole.
B Consists of outer trophoblast and inner embryoblast.
C Gets implanted along with zona pellucida.
D Has a cavity called amniotic cavity.

The correct answer is:
Consists of outer trophoblast and inner embryoblast.

Solution:
The blastocyst is a hollow structure that contains a cluster of cells from which embryo arises. The outer layer provides placenta and other essential tissues for fetal development while the inner cells give rise to the tissues of the body. This outer layer is known as trophoblast which provides nutrients to the embryo. Embryoblast is cells which are situated within the trophoblast and result in the production of an embryo.

Topic: Biology, Human Reproduction, NEET
Which of the following is correct about the dihedral angle of H2O2in various states?

Options:
A Dihedral angle in gas phase< Dihedral angle in solid phase
B Dihedral angle in gas phase> Dihedral angle in solid phase
C Dihedral angle in gas phase= Dihedral angle in solid phase
D None of the above

The correct answer is:
Dihedral angle in gas phase> Dihedral angle in solid phase

Solution:
Correct Option is : 2
Dihedral angle in gas phase> Dihedral angle in solid phase

Topic: Chemistry, Hydrogen, NEET
. Which of the following is correct about the E-H bond dissociation enthalpy of group 15 elements?

Options:
A NH3333
B NH3333
C SbH3333
D AsH3333

The correct answer is:
SbH3333

Solution:
Correct Option is : 3
SbH3333

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is correct about the electrical synapse

Options:
A

Membranes of pre- and post-synaptic neurons	Requirement of neurotransmitter
Are in very close proximity	Yes

B

Membranes of pre- and post-synaptic neurons	Requirement of neurotransmitter
Are in very close proximity	No

C

Membranes of pre- and post-synaptic neurons	Requirement of neurotransmitter
Are not in very close proximity	Yes

D

Membranes of pre- and post-synaptic neurons	Requirement of neurotransmitter
Are not in very close proximity	No

The correct answer is:

Membranes of pre- and post-synaptic neurons	Requirement of neurotransmitter
Are in very close proximity	No

Solution:
Electrical synapse
a. The membranes of pre- and post-synaptic neurons are very close to each other.
b. Electrical current flow directly from one neuron into the other across these synapses.
c. Impulse transmission occur at faster rate.
d. Rare in our body.

Topic: Biology, Neural Control and Coordination, NEET
Which of the following is correct about the genome of viroid?

Options:
A It comprises of RNA having high molecular weight.
B It comprises of either DNA or RNA.
C It comprises of RNA associated with proteins.
D It comprises of RNA having low molecular weight.

The correct answer is:
It comprises of RNA having low molecular weight.

Solution:
In 1971, T.O. Diener discovered a new infectious agent that was smaller than viruses and caused potato spindle tuber disease. It was found to be a free RNA; it lacked the protein coat that is found in viruses, hence the name viroid. The RNA of the viroid was of low molecular weight.

Topic: Biology, Biological Classification, NEET
Which of the following is correct about the given pedigree chart?

Options:
A Inheritance of a condition like phenylketonuria as an autosomal recessive trait.
B The pedigree chart is wrong as this is not possible.
C Inheritance of a recessive sex-linked disease like haemophilia.
D Inheritance of a sex-linked inborn error of metabolism like phenylketonuria.

The correct answer is:
Inheritance of a condition like phenylketonuria as an autosomal recessive trait.

Solution:
Pedigree analysis provides information regarding inheritance of particular traits or diseases and using it we can predict the possibility of appearance of any traits in the new generation. In the given chart, both son and daughter have the recessive trait suggesting it to an autosomal inheritance and not sex-linked. Since, it is not expressed in any of the parent but expressed in the children, the trait is recessive.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following is correct about the humus?

Options:
A Black colored organic and inorganic material
B Dark brown colored crystalline organic and inroganic material
C Black colored crystalline organic and inorganic material
D Dark brown colored amorphous organic material

The correct answer is:
Dark brown colored amorphous organic material

Solution:
Humus is a dark, organic material that forms in soil when plant and animal matter decays. The amorphous material helps it retain water and nutrients.

Topic: Biology, Ecosystem, NEET
Which of the following is correct about the ionic radii of the following elements?

Options:
A Sc>Zn>V>Ni
B Zn>Ni>V>Sc
C V>Sc>Ni>Zn
D Sc>V>Ni>Zn

The correct answer is:
Sc>Zn>V>Ni

Solution:
Correct Option is : 1
Sc>Zn>V>Ni

Topic: Chemistry, d and f Block Elements, NEET
Which of the following is correct about the nature of hormones?

1. Hormones are non-nutrient chemicals.
2. Hormone act as intercellular messengers
3. Hormones are reusable
4. A hormone is produced by exocrine glands

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

The correct answer is:
I and II

Solution:
Hormones are secreted by the endocrine cells in one part of the body and carried by the blood to another part where they stimulate or inhibit the specific physiological process. The hormones have low molecular weight molecules and are specific in their action. These acts in very low concentration, are quick-acting and are non-antigenic. The hormones are mostly short-lived and have no cumulative effect, after their action, they are removed from the liver and kidney.

Topic: Biology, Chemical Coordination and Integration, NEET
Which of the following is correct about the post-fertilization events in flowering plants?

Options:
A Development of embryo before endosperm.
B Endosperm develops before embryo
C Both the development of embryo and endosperm occurs simultaneously
D All are correct

The correct answer is:
Endosperm develops before embryo

Solution:
The embryo develops at the micropylar end of the embryo sac. The most zygote divides only after a certain amount of endosperms develops, as this is an adaptation to provide assured nutrition to the developing embryo.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which of the following is correct about the reproductive system of a male cockroach?

Options:
A Ejaculatory duct is between seminal vesicle and phallic gland.
B Duct of Phallic gland opens in the left phallomere.
C Mushroom glands open in ejaculatory duct.
D Spermatophore is 2 layered in seminal vesicles.

The correct answer is:
Duct of Phallic gland opens in the left phallomere.

Solution:
The Duct of phallic gland or conglobate gland moves posteriorly to open in the left phallomere, which is the largest phallomere.

Topic: Biology, Structural Organisation in Animals, NEET
Which of the following is correct about the terminal ends of a linear DNA chain?

Options:
A 5' phosphate end and 3' phosphate end
B 5' phosphate end and 3' OH end
C 5' OH end and 3' phosphate end
D 5' OH end and 5' OH end

The correct answer is:
5' phosphate end and 3' OH end

Solution:
Phosphate groups are attached to the 5'- and 3'-carbon atoms of each sugar to form the backbone chain of DNA. One end of the chain carries a free phosphate group attached to the 5'-carbon atom; this is called the 5' end of the molecule. The other end has a free hydroxyl (-OH) group at the 3'-carbon and is called the 3' end of the molecule.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which of the following is correct about the transport of carbon dioxide from the tissue to lung alveoli?

Options:
A

Carbamino-Hb form	As Dissolved plasma	As Bicarbonate form
20-25%	70%	5-7%

B

Carbamino-Hb form	As Dissolved plasma	As Bicarbonate form
70%	5-7%	20-25%

C

Carbamino-Hb form	As Dissolved plasma	As Bicarbonate form
5-7%	20-25%	70%

D

Carbamino-Hb form	As Dissolved plasma	As Bicarbonate form

20-25%	5-7%	70%

The correct answer is:

Carbamino-Hb form	As Dissolved plasma	As Bicarbonate form

20-25%	5-7%	70%

Solution:
Transport of carbon dioxide can occur by three ways: About 20-25% carbon dioxide is transported from tissue to lungs alveoli as carbamino-haemoglobin form. About 5-7% CO2 is transported as a dissolved plasma form.

Topic: Biology, Breathing and Exchange of Gases, NEET
Which of the following is correct about vernalization?

Options:
A Flowering is only quantitatively dependent on low temperature.
B It stimulates precocious reproductive development
C It is seen in the biennial plants
D Both (A) and (C)

The correct answer is:
It is seen in the biennial plants

Solution:
There are plants for which flowering is either quantitatively or qualitatively dependent on exposure to low temperature. This phenomenon is termed vernalisation. It prevents precocious reproductive development late in the growing season and enables the plant to have sufficient time to reach maturity. Vernalization is seen in biennial plants. Biennials are monocarpic plants that normally flower and die in the second season. Sugarbeet, cabbages and carrots are some of the common biennials. Subjecting the growing of a biennial plant to a cold treatment stimulates a subsequent photoperiodic flowering response.

Topic: Biology, Plant - Growth and Development, NEET
Which of the following is correct about viroids?

Options:
A They have free RNA without protein coat
B They have DNA with protein coat
C They have free DNA without protein coat
D They have RNA with protein coat

The correct answer is:
They have free RNA without protein coat

Solution:
VIROIDS: Viroids are smaller than viruses, self-replicating particles that were discovered by T.O. Diener (1971). Viroids are infectious RNA particles that are devoid of protein coat. The molecular weight of RNA in viroid is low in comparison to viruses. Potato spindle tuber is a viroid causing disease.

Topic: Biology, Biological Classification, NEET, NEET 2020 (Phase 1)
Which of the following is correct about ZW-ZZ type of sex determination in birds?

Options:
A Males are heterogametic
B Females are heterogametic
C Females are homogametic
D Both males and females are homogametic

The correct answer is:
Females are heterogametic

Solution:
In ZW-ZZ mechanism, female carries one Z and one W chromosome, thus females form two types of gametes, 50% with Z and 50% with W chromosomes.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following is correct, according to Ernst Mayr's concept of species?

Options:
A Species is a genetically open system
B All organisms of a population have a common gene pool
C Species are inter-breeding and inter-fertile
D Two species are not reproductively isolated

The correct answer is:
All organisms of a population have a common gene pool

Solution:
According to Ernst Mayr (also known as The Darwin of the twentieth century), all organisms of a population have the common gene pool.

Topic: Biology, Biological Classification, NEET
Which of the following is correct electronic configuration of Pd?

Options:
A 5s14d9
B 5s24d8
C 5s04d10
D None of the above

The correct answer is:
5s04d10

Solution:
Correct Option is : 3
5s04d10

Topic: Chemistry, d and f Block Elements, NEET
. Which of the following is correct electronic configuration of Pt?

Options:
A 6s05d10
B 6s25d8
C 6s15d9
D None of the above

The correct answer is:
6s15d9

Solution:
Correct Option is : 3
6s15d9

Topic: Chemistry, d and f Block Elements, NEET
Which of the following is correct for artificial insemination method in animal breeding?

Options:
A It is very economical and gives high rate of successful fertilization.
B The semen is collected from superior bull can be used immediately or can frozen at very low temperature for later use.
C The frozen semen can be stored for a long period, and transported.
D All of the above

The correct answer is:
All of the above

Solution:
Artificial insemination is very economical and gives high rate of successful fertilization. The semen is collected from superior bull can be used immediately or can be frozen at very low temperature for later use.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Which of the following is correct for lens focusing while seeing a distant object?

Options:
A Tightly stretched suspensory ligament and rounded lens
B Contracted ciliary muscles and rounded lens
C Relaxed ciliary muscles and tightly stretched suspensory ligament
D Contracted ciliary muscles and relaxed suspensory ligaments

The correct answer is:
Relaxed ciliary muscles and tightly stretched suspensory ligament

Solution:
Human eyes have remarkable power of accommodation by changing the convexity of the lens. Due to action of the muscles of ciliary body and suspensory ligament the focal length of the lens can be changed. Then the objects can be focused in different intensity of light from varying distances. For accommodation of distant objects, ciliary muscles are relaxed and suspensory ligaments are tightly stretched.

Topic: Biology, Neural Control and Coordination, NEET
Which of the following is correct for mRNA synthesized in leucocytes?

Options:
A Exons and introns do not appear in the mature RNA.
B Exons appear but introns do not appear in the mature RNA.
C Introns appear but exons do not appear in the mature RNA.
D mRNA is not synthesized in leucocytes.

The correct answer is:
Exons appear but introns do not appear in the mature RNA.

Solution:
RNA splicing is a post-transcriptional process necessary to form a mature mRNA. In eukaryotes, the gene contains extra sequences that do not code for any protein. In these organisms, transcription of DNA produces pre-mRNA. These pre-mRNA transcripts often contain regions, called introns, which are intervening sequences which must be removed prior to translation by the process of splicing. The regions of RNA that code for a protein are called exons. Introns are intervening sequences within a pre-mRNA molecule that do not code for any protein and are removed during RNA processing by a spliceosome.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which of the following is correct for r-selected species?

Options:
A Large number of progeny with small size
B Large number of progeny with large size
C Small number of progeny with small size
D Small number of progeny with large size

The correct answer is:
Large number of progeny with small size

Solution:
Population evolve to maximize their reproductive fitness in the habitat in which they live. This fitness towards maximizing reproductive is called as Darwinian fitness (high r-value). According to this, under a particular set of selection pressures, organism evolves towards the most efficient reproductive strategy. Some of these are as follows:

(i) BREEDING HABIT: Some organisms breed only once in their lifetime (pacific salmon fish) while others breed many times during their lifetime (most bird and mammals)

(ii) NUMBER AND SIZE OF OFFSPRING: Some produce a large number of small-sized offspring (oysters, pelagic fishes) while others produce a small number of large-sized offspring (birds and animals).

Topic: Biology, Organisms and Populations, NEET, NEET 2016 (Phase 2)
Which of the following is correct for the circulatory system of cockroach?

Options:
A It is present on the dorsal side and it has thirteen units of heart in abdominal region
B It is present on the ventral side and it has ten abdominal and three thoracic units of heart
C It is present on the ventral side and it has thirteen units of heart in abdominal region
D It is present on the dorsal side and it has ten abdominal and three thoracic units of heart

The correct answer is:
It is present on the dorsal side and it has ten abdominal and three thoracic units of heart

Solution:
Heart of cockroach is a dorsal, pulsatile 13 chambered (ten abdominal and three thoracic chambers) structure. This heart is, infact the dorsal blood vessel, which pulsates, with the help of external alary muscles, that's why it is also called as myogenic heart.

Topic: Biology, Structural Organisation in Animals, NEET
Which of the following is correct for the microbe producing a molecule the same as the first stable product of Kreb's cycle?

Options:
A They belong to the same group in which bread mould is placed.
B They belong to the same group in which the microbe responsible for producing the first antibiotic is placed.
C They belong to the same group in which the microbe responsible for biological control of the plant pathogens is placed.
D They belong to the same group in which the microbe responsible for causing smut and rust is placed.

The correct answer is:
They belong to the same group in which the microbe responsible for producing the first antibiotic is placed.

Solution:
The first stable product of Kreb's cycle is citric acid or citrate. Aspergillus niger belonging to Ascomycetes is the microbe used to produce citric acid on a large scale. The group Acsomycetes include organisms like Yeast (produces alcohol), Penicillium (the source of first antibiotic penicillin), Claviceps and Neurospora (both used in genetic engineering).

Topic: Biology, Biological Classification, NEET
Which of the following is correct, for the mitochondrial ETS?

Options:
A Number of ATP molecules synthesised does not depend on nature of electron donor
B Ubiquinone receives reducing equivalents via FADH2 also.
C Cytochrome c is a large protein, attached to outer surface of inner mitochondrial membrane.
D Complex IV has cyt a and cyt a3, but no copper centres.

The correct answer is:
Ubiquinone receives reducing equivalents via FADH2 also.

Solution:
Electron transport system (ETS) is present in the inner membrane of mitochondrial. Electrons from NADH produced in the mitochondrial matrix during TCA cycle are oxidised by an NADH dehydrogenase (complex I), and are transferred to ubiquinone located within the inner membrane. Ubiquinone also receives reducing equivalents via FADH2 (complex II) that is generated during oxidation of succinate in the TCA cycle. The reduced ubiquinone (ubiquinol) is then oxidised with the transfer of electrons to cytochrome c via cytochrome bc1 complex (complex III) and finally the electrons are passed on to O2 resulting in the formation of H2O.

Topic: Biology, Respiration in Plants, NEET
Which of the following is correct for the sterilization technique?

Options:
A Surgical method for female only
B Surgical method for male only
C Tubectomy in male and vasectomy in female
D Vasectomy in male and tubectomy in female

The correct answer is:
Vasectomy in male and tubectomy in female

Solution:
Surgical methods are applicable for male and female as a terminal method to prevent any more pregnancies. Sterilization technique in males is called vasectomy and in females is called tubectomy.

Topic: Biology, Reproductive Health, NEET
Which of the following is correct for the velocity of electron?

Options:
A
B
C
D All are correct

The correct answer is:

Solution:
Velocity is given as
Vn=2.18×106×Zn
Vn∝Z∝1n
Hence graphs in option is C is correct.

Topic: Chemistry, Structure of Atom, NEET
Which of the following is correct for zero and first order reactions respectively, where 'a' is initial concentration of the reactant?

Options:
A t1/2âa,t1/2â1a2
B t1/2âa,t1/2â1a
C t 1/2 ∝a,  t 1/2 ∝ a 0
D t1/2âa0,t1/2âa

The correct answer is:
t 1/2 ∝a,  t 1/2 ∝ a 0

Solution:
t1/2∝1an-1
where n = order of reaction
for zero order, t1/2∝a
for first order, t1/2∝a0

Topic: Chemistry, Chemical Kinetics, NEET
Which of the following is correct information about a typical dicot embryo?

Options:
A EmbryonalÂ axisCotyledonsOneOne
B Embryonal axisCotyledonsOneTwo
C EmbryonalÂ axisCotyledonsTwoone
D EmbryonalÂ axiscotyledonsTwoTwo

The correct answer is:
Embryonal axisCotyledonsOneTwo

Solution:
Dicot embryos possess one embryonal axis and two cotyledons.
Monocot embryos possess only one cotyledon.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which of the following is correct match regarding structures and their location in cockroach?

Options:
A Anal style: 10th abdominal segment
B Ovary: 4th -6th abdominal segments
C Testes: 2nd-6th abdominal segments
D Mushroom gland: 6th-7th abdominal segments

The correct answer is:
Mushroom gland: 6th-7th abdominal segments

Solution:
The male reproductive system consists of a pair of testes one lying on each lateral side in the 4th-6th abdominal segments. The female reproductive system consists of two large ovaries, lying laterally in the 2ndâ6th abdominal segments. Anal style is a paired structure present in males in the 9th abdominal segment.

Topic: Biology, Structural Organisation in Animals, NEET