NEET%20Test%20Series-2021/NEET%20Biology%20MCQS%20Mock%20Test%20Paper%2020 Sample Test,Sample questions

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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

Posted Date:-2021-02-22 09:12:13

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

1.Okazaki fragments

2.polymer

3.polysome

4.polypeptide

Posted Date:-2021-02-22 09:12:13

Question: 
Afferent neurons carry nerve impulses from

1.CNS to muscles

2.CNS to receptors

3.receptors to CNS

4.effector organs to CNS

Posted Date:-2021-02-22 09:12:13

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)

Posted Date:-2021-02-22 09:12:13

Question: 
Antibodies are

1.prostaglandins

2.steroids

3. lipoproteins

4. glycoproteins

Posted Date:-2021-02-22 09:12:13

Question: 
Anticodon is present in

1.DNA

2. tRNA

3. rRNA

4. mRNA

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

Question: 
 A cranial nerve with the highest number of branches

1. Facial nerve

2.Trigeminal nerve

3.Vagus nerve

4.Both (b) and (c)

Posted Date:-2021-02-22 09:12:13

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

1.ostia

2.mesenchymal cells

3. choanocytes

4.oscula

Posted Date:-2021-02-22 09:12:13

Question: 
 Interferons are

1.antibiotic proteins

2.antiviral proteins

3.antigen proteins

4. all of the above

Posted Date:-2021-02-22 09:12:13

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

1.protein

2.ribosome

3.RNA

4.DNA

Posted Date:-2021-02-22 09:12:13

Question: 
 Oral polio drops contain

1. harvested antibodies

2.activated pathogens

3.attenuated pathogens

4. gamma globulins

Posted Date:-2021-02-22 09:12:13

Question: 
 The cranial nerve that regulates the heartbeat

1. VII

2.VIII

3.IX

4.X

Posted Date:-2021-02-22 09:12:13

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

1.reciprocal cross

2.reverse cross

3.dihybrid cross

4.test cross

Posted Date:-2021-02-22 09:12:13

Question: 
 Type I hypersensitivity involves

1. IgD

2.IgM

3.IgE

4. IgG

Posted Date:-2021-02-22 09:12:13

Question: 
 Which of the following contains the filiform apparatus?

1.zygote

2.synergids

3. generative cell

4.egg

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

Question: 
Double fertilization was discovered by

1.Leeuwenhoek

2. Hofmeister

3.Nawaschin and Guignard

4.Strasburger

Posted Date:-2021-02-22 09:12:13

Question: 
Embryo sac of the angiosperms having eight nuclei is

1.only tetrasporic

2.only bisporic

3. only monosporic

4.any of the following

Posted Date:-2021-02-22 09:12:13

Question: 
Genotype of dominant plant can be determined by

1.pedigree analysis

2. back cross

3.test cross

4.dihybrid cross

Posted Date:-2021-02-22 09:12:13

Question: 
Globulins of the blood plasma are responsible for

1.defence mechanisms

2. blood clotting

3.oxygen transport

4.osmotic balance

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

Question: 
Which of the following shows double fertilization?

1.Angiosperms

2.Gymnosperms

3.Algae

4. All of the above

Posted Date:-2021-02-22 09:12:13

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

1.recombination

2.crossing over

3.linkage

4.repulsion

Posted Date:-2021-02-22 09:12:13

Question: 
Mendel took _______ contrasting characteristics of pea plants.

1.eight

2.seven

3.six

4. five

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

Question: 
RNA contains repeating units of

1. deoxyribonucleotides

2.ribonucleotides

3.deoxyribonucleosides

4.ribonucleosides

Posted Date:-2021-02-22 09:12:13

Question: 
RNA contains Uridine, it is a

1.pyrimidine

2.purine

3. nucleotide

4.nucleoside

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

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

1. IgD

2. IgA

3. IgG

4.IGM

Posted Date:-2021-02-22 09:12:13

Question: 
The embryo sac occurs in

1.endosperm

2.ovule

3.axis part of embryo

4.embryo

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

Question: 
The pollen tube enters the embryo sac through

1.Central cell

2.Egg cell

3. Degenerated synergid

4.Persistent synergid

Posted Date:-2021-02-22 09:12:13

Question: 
Transplanted graft may be rejected due to

1. cell-mediated immune response

2. humoral immune response

3. innate immune response

4.passive response

Posted Date:-2021-02-22 09:12:13

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

1. IgM

2. IgG

3.IgE

4.IgA

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

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

1.deoxyribonuclease

2.ligase

3.ligase

4. lysozyme

Posted Date:-2021-02-22 09:12:13

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

1. IgM

2.IgD

3.IgG

4.IgA

Posted Date:-2021-02-22 09:12:13

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

1.Medulla

2.Substantia nigra

3.Thalamus

4.Temporal lobe

Posted Date:-2021-02-22 09:12:13

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

1.diocoel

2.paracoel

3.rhinocoel

4.metacoel

Posted Date:-2021-02-22 09:12:13

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

1.RNA

2.DNA

3.Sphaerosomes

4.Chloroplasts

Posted Date:-2021-02-22 09:12:13

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

1.hypothalamus

2. cerebellum

3.corpus callosum

4.spinal cord

Posted Date:-2021-02-22 09:12:13

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

Posted Date:-2021-02-22 09:12:13

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

1.Uracil

2.Thymine

3. Cytosine

4. Guanine

Posted Date:-2021-02-22 09:12:13

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

1. mRNA

2. tRNA

3.miRNA

4.rRNA

Posted Date:-2021-02-22 09:12:13

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

1.tRNA

2.rRNA

3.mRNA

4.hnRNA

Posted Date:-2021-02-22 09:12:13

Question: 
Which of the following undergoes meiosis?

1.conidia

2.gemmules

3.meiocyte

4.megaspore

Posted Date:-2021-02-22 09:12:13

Posted on by R4R Team

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