NEET Test Series-2021 to 2022/NEET Biology MCQS Mock Test Paper 20 Sample Test,Sample questions

Question:
A neuron that carries information from the peripheral nervous system to the central nervous system is

1.afferent neuron

2.efferent neuron

3. both

4.none


Question:
A single strand of mRNA attached to complex of ribosomes is called

1.Okazaki fragments

2.polymer

3.polysome

4.polypeptide


Question:
Afferent neurons carry nerve impulses from

1.CNS to muscles

2.CNS to receptors

3.receptors to CNS

4.effector organs to CNS


Question:
After cross-fertilization of true-breeding tall and dwarf plants, the F1 generation was self-fertilized. The resultant plants have genotype in the ratio

1.1:2:1 (homozygous tall : heterozygous tall : dwarf)

2.1:2:1 (heterozygous tall : homozygous tall : dwarf)

3.3:1 (tall : dwarf)

4.3:1 (dwarf : tall)


Question:
Antibodies are

1.prostaglandins

2.steroids

3. lipoproteins

4. glycoproteins


Question:
Anticodon is present in

1.DNA

2. tRNA

3. rRNA

4. mRNA


Question:
Antigen binding sites are present in

1.Fab regions of an antibody

2. Fc region of an antibody

3.only in the light chain

4. only in the heavy chain


Question:
 A cranial nerve with the highest number of branches

1. Facial nerve

2.Trigeminal nerve

3.Vagus nerve

4.Both (b) and (c)


Question:
 Flagellated cells, which line the spongocoel in Poriferans are known as

1.ostia

2.mesenchymal cells

3. choanocytes

4.oscula


Question:
 Interferons are

1.antibiotic proteins

2.antiviral proteins

3.antigen proteins

4. all of the above


Question:
 Nissl’s granules present in the neurons are made up of

1.protein

2.ribosome

3.RNA

4.DNA


Question:
 Oral polio drops contain

1. harvested antibodies

2.activated pathogens

3.attenuated pathogens

4. gamma globulins


Question:
 The cranial nerve that regulates the heartbeat

1. VII

2.VIII

3.IX

4.X


Question:
 The cross where the sources of gametes are reversed is called

1.reciprocal cross

2.reverse cross

3.dihybrid cross

4.test cross


Question:
 Type I hypersensitivity involves

1. IgD

2.IgM

3.IgE

4. IgG


Question:
 Which of the following contains the filiform apparatus?

1.zygote

2.synergids

3. generative cell

4.egg


Question:
 Which of the following rRNAs in bacteria acts as a ribozyme as well as structural RNA?

1. 23S rRNA

2.18S rRNA

3.5.8S rRNA

4.5S rRNA


Question:
Double fertilization is due to the fusion of

1.male gametes with egg and synergid

2.male gametes with egg and secondary nucleus

3.male gametes with egg and polar nuclei

4.male gametes with two eggs


Question:
Double fertilization was discovered by

1.Leeuwenhoek

2. Hofmeister

3.Nawaschin and Guignard

4.Strasburger


Question:
Embryo sac of the angiosperms having eight nuclei is

1.only tetrasporic

2.only bisporic

3. only monosporic

4.any of the following


Question:
Genotype of dominant plant can be determined by

1.pedigree analysis

2. back cross

3.test cross

4.dihybrid cross


Question:
Globulins of the blood plasma are responsible for

1.defence mechanisms

2. blood clotting

3.oxygen transport

4.osmotic balance


Question:
If both genotype and phenotype shows the same ratios of 1:2:1 in the F2 generation, it shows

1.incomplete dominance in monohybrid cross

2. complete dominance in monohybrid cross

3. dihybrid cross

4.co-dominance


Question:
If there is an injury in the hypothalamus region of the brain, it is most likely to affect

1. regulation of body temperature

2.decision making

3.co-ordination during locomotion

4.short-term memory


Question:
Which of the following shows double fertilization?

1.Angiosperms

2.Gymnosperms

3.Algae

4. All of the above


Question:
Lack of independent assortment of two genes is due to

1.recombination

2.crossing over

3.linkage

4.repulsion


Question:
Mendel took _______ contrasting characteristics of pea plants.

1.eight

2.seven

3.six

4. five


Question:
Perisperm is different from endosperm because

1.it is haploid

2. it is diploid

3. it does not contain reserve food

4.it is formed by fusion of secondary nucleus and many sperms


Question:
RNA contains repeating units of

1. deoxyribonucleotides

2.ribonucleotides

3.deoxyribonucleosides

4.ribonucleosides


Question:
RNA contains Uridine, it is a

1.pyrimidine

2.purine

3. nucleotide

4.nucleoside


Question:
Test cross determines

1.whether two traits are linked or not

2. the genotype of F2 plant

3.whether the two species will breed successfully or not

4.number of alleles in a gene


Question:
Test cross is a

1. cross between two recessive homozygotes

2. cross between dominant homozygote and heterozygote

3.cross between two F1 hybrids

4.cross between an F1 hybrid and recessive homozygote


Question:
The class of antibodies, which can cross placenta is

1. IgD

2. IgA

3. IgG

4.IGM


Question:
The embryo sac occurs in

1.endosperm

2.ovule

3.axis part of embryo

4.embryo


Question:
The genes for the seven characters chosen by Mendel are located on

1.four chromosomes

2.five chromosomes

3.six chromosomes

4. seven chromosomes


Question:
The pollen tube enters the embryo sac through

1.Central cell

2.Egg cell

3. Degenerated synergid

4.Persistent synergid


Question:
Transplanted graft may be rejected due to

1. cell-mediated immune response

2. humoral immune response

3. innate immune response

4.passive response


Question:
Which of the following antibodies is predominantly present in tears, saliva and mucous

1. IgM

2. IgG

3.IgE

4.IgA


Question:
Which of the following characteristics of pea plants was not used by Mendel in his experiments?

1.seed colour

2.seed shape

3.pod length

4.flower position


Question:
Which of the following enzymes is non-proteinaceous?

1.deoxyribonuclease

2.ligase

3.ligase

4. lysozyme


Question:
Which of the following immunoglobulins makes the largest percentage in breast milk?

1. IgM

2.IgD

3.IgG

4.IgA


Question:
Which of the following is a part of the rhombencephalon?

1.Medulla

2.Substantia nigra

3.Thalamus

4.Temporal lobe


Question:
Which of the following is another name for the third ventricle of the brain?

1.diocoel

2.paracoel

3.rhinocoel

4.metacoel


Question:
Which of the following is found more widely in a cell?

1.RNA

2.DNA

3.Sphaerosomes

4.Chloroplasts


Question:
Which of the following is one of the parts of the hindbrain?

1.hypothalamus

2. cerebellum

3.corpus callosum

4.spinal cord


Question:
Which of the following parts of the brain controls the body temperature and urge of eating?

1.thalamus

2.cerebellum

3.pons

4.hypothalamus


Question:
Which of the following purine bases is present in RNA?

1.Uracil

2.Thymine

3. Cytosine

4. Guanine


Question:
Which of the following RNAs are the most abundant in an animal cell?

1. mRNA

2. tRNA

3.miRNA

4.rRNA


Question:
Which of the following RNAs’ structure is similar to clover leaf?

1.tRNA

2.rRNA

3.mRNA

4.hnRNA


Question:
Which of the following undergoes meiosis?

1.conidia

2.gemmules

3.meiocyte

4.megaspore


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