NEET Exam Sample Questions - Subject Wise - NEET Mock Test 2022

Each question carries 4 marks. For each correct answer/best option,candidate will get 4 marks. For each incorrect answer, 1 mark will be deducted from the total score.

Placentation in which ovules develop on the inner wall of the ovary or in peripheral part, is

A) Axile

B) Free central

C) Parietal

D) Basal

Ans: C) Parietal

Which of the following pairs of gases is mainly responsible for green house effect?

A) Ozone and Ammonia

B) Carbon dioxide and Methane

C) Oxygen and Nitrogen

D) Nitrogen and Sulphur dioxide

Ans: B) Carbon dioxide and Methane

Xylem translocates

A) Water and mineral salts only

B) Water only

C) Water, mineral salts, some organic nitrogen and hormones

D) Water, mineral salts and some organic nitrogen only

Ans: C) Water, mineral salts, some organic nitrogen and hormones

Which one of the following is not a method of in situ conservation of biodiversity?

A) Botanical Garden

B) Sacred Grove

C) Biosphere Reserve

D) Wildlife Sanctuary

Ans: A) Botanical Garden

Select the incorrect statement.

A) Inbreeding helps in accumulation of superior genes and elimination of undesirable genes

B) Inbreeding is essential to evolve purelines in any animal.

C) Inbreeding selects harmful recessive genes that reduce fertility and productivity

D) Inbreeding increases homozygosity

Ans: C) Inbreeding selects harmful recessive genes that reduce fertility and productivity

Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following

A) Flaccidity of bulliform cells

B) Shrinkage of air spaces in spongy mesophyll

C) Tyloses in vessels

D) Closure of stomata

Ans: A) Flaccidity of bulliform cells

Which one of the following equipments is essentially required for growing microbes on a large scale, for industrial production of enzymes?

A) Bioreactor

B) BOD incubator

C) Industrial oven

D) Sludge digester

Ans: A) Bioreactor

Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for

A) Construction of roads

B) Making tubes and pipes

C) Making plastic sacks

D) Use as a fertilizer

Ans: A) Construction of roads

Pinus seed cannot germinate and establish without fungal association. This is because :

A) Its embryo is immature.

B) It has obligate association with mycorrhizae.

C) Its seeds contain inhibitors that prevent germination.

D) It has very hard seed coat.

Ans: B) It has obligate association with mycorrhizae.

Expressed Sequence Tags (ESTs) refers to :

A) Genes expressed as RNA

B) Polypeptide expression

C) DNA polymorphism

D) Novel DNA sequences

Ans: A) Genes expressed as RNA

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by

A) Aldolase

B) Hexokinase

C) Enolase

D) Phosphofructokinase

Ans: B) Hexokinase

Which of the following contraceptive methods do involve a role of hormone?

A) Pills, Emergency contraceptives, Barrier methods.

B) Lactational amenorrhea, Pills Emergency contraceptives.

C) Cut, Pills, Emergency contraceptives.

D) Barrier method, Lactational amenorrhea, Pills.

Ans: B) Lactational amenorrhea, Pills Emergency contraceptives.

What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm?

A) Alkaline pH of gut

B) Body temperature

C) Moist surface of midgut

D) Acidic pH of stomach

Ans: A) Alkaline pH of gut

Select the incorrect statement.

A) Male fruit fly is heterogametic

B) Human males have one of their sex-chromosome much shorter than the other

C) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg

D) In male grasshoppers 50% of sperms have no sex-chromosome

Ans: C) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg

Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for typhoid.

A) Salmonella typhi / Anthrone test

B) Streptococcus pneumoniae / Widal test

C) Plasmodium vivax / UTI test

D) Salmonella typhi / Widal test

Ans: B) Streptococcus pneumoniae / Widal test

Which of the statements given below is not true about formation of Annual Rings in trees?

A) Activity of cambium depends upon variation in climate.

B) Annual rings are not prominent in trees of temperate region.

C) Annual ring is a combination of spring wood and autumn wood produced in a year

D) Differential activity of cambium causes light and dark bands of tissue early and late wood respectively.

Ans: B) Annual rings are not prominent in trees of temperate region.

Which of the following statements is correct?

A) Proteinacious covering of the eye-ball.

B) Cornea consists of dense connective tissue of elastin and can repair itself.

C) Cornea consists of dense matrix of collagen and is the most sensitive portion the eye.

D) Cornea is convex, transparent layer which is highly vascularised.

Ans: C) Cornea consists of dense matrix of collagen and is the most sensitive portion the eye.

Which of the following is a commercial blood cholesterol lowering agent?

A) Cyclosporin A

B) Lipases

C) Statin

D) Streptokinase

Ans: C) Statin

Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere?

A) Gothenburg Protocol

B) Montreal Protocol

C) Kyoto Protocol

D) Gothenburg Protocol

Ans: B) Montreal Protocol

What is the site of perception of photoperiod necessary for induction of flowering in plants?

A) Leaves

B) Shoot apex

C) Pulvinus

D) Lateral buds

Ans: A) Leaves

Phloem in gymnosperms lacks

A) Albuminous cells and sieve cells

B) Both sieve tubes and companion cells

C) Sieve tubes only

D) Companion cells only

Ans: B) Both sieve tubes and companion cells

Which of the following is true for Golden rice?

A) It is Vitamin A enriched, with a gene from daffodil

B) It is pest resistant, with a gene from Bacillus thuringiensis

C) It has yellow grains, because of a gene introduced from a primitive variety of rice

D) It is drought tolerant, developed using Agrobacterium vector

Ans: B) It is Vitamin A enriched, with a gene from daffodil

The shorter and longer arms of a submetacentric chromosome are referred to as

A) Q-arm and p-arm respectively

B) M-arm and n-arm respectively

C) P-arm and q-arm respectively

D) S-arm and l-arm respectively

Ans: C) P-arm and q-arm respectively

The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in

A) Eustachian tube and Salivary duct

B) Bronchioles and Fallopian tubes

C) Bile duct and Bronchioles

D) Fallopian tubes and Pancreatic duct

Ans: B) Bronchioles and Fallopian tubes

Which of the following statements is not correct?

A) The hydrolytic enzymes of lysosomes are active under acidic pH

B) Lysosomes are formed by the process of packaging in the endoplasmic reticulum

C) Lysosomes are membrane bound structures

D) Lysosomes have numerous hydrolytic enzymes

Ans: D) Lysosomes have numerous hydrolytic enzymes

It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

A) Gibberellin and Cytokinin

B) Cytokinin and Abscisic acid

C) Auxin and Ethylene

D) Gibberellin and Abscisic acid

Ans: C) Auxin and Ethylene

From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in

A) Pteridophytes

B) Gymnosperms

C) Liverworts

D) Mosses

Ans: A) Pteridophytes

Which of the following ecological pyramids is generally inverted?

A) Pyramid of biomass in a sea

B) Pyramid of energy

C) Pyramid of biomass in a forest

D) Pyramid of numbers in grassland

Ans: A) Pyramid of biomass in a sea

Extrusion of second polar body from egg nucleus occurs :

A) Before entry of sperm into ovum

B) After entry of sperm but before fertilization

C) After fertilization

D) Simultaneously with first cleavage

Ans: B) After entry of sperm but before fertilization

What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?

A) 125 beats per minute

B) 50 beats per minute

C) 75 beats per minute

D) 100 beats per minute

Ans: D) 100 beats per minute

Concanavalin A is

A) An essential oil

B) An alkaloid

C) A lectin

D) A pigment

Ans: C) A lectin

Purines found both in DNA and RNA are

A) Guanine and cytosine

B) Adenine and guanine

C) Cytosine and thymine

D) Adenine and thymine

Ans: B) Adenine and guanine

Thiobacillus is a group of bacteria helpful in carrying out

A) Nitrogen fixation

B) Denitrification

C) Nitrification

D) Chemoautotrophic fixation

Ans: B) Denitrification

Colostrum the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the new born infants because it contains

A) Immunoglobulin A

B) Natural killer cells

C) Monocytes

D) Macrophages

Ans: A) Immunoglobulin A

Variations caused by mutation, as proposed by Hugo de Vries are

A) Random and directionless

B) Random and directional

C) Small and directional

D) Small and directionless

Ans: A) Random and directionless

In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as

A) Parthenogenesis

B) Parthenocarpy

C) Autogamy

D) Syngamy

Ans: A) Parthenogenesis

Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.

A) Oxyntic Cells

B) Goblet Cells

C) Duodenal Cells

D) Chief Cells

Ans: B) Goblet Cells

What is the fate of the male gametes discharged in the synergid?

A) One fuses with egg other(s) degenerate (s) in the synergid.

B) One fuses with the egg and other fuses with central cell nuclei.

C) All fuse with the egg.

D) One fuses with the egg, other(s) fuse(s) with synergid nucleus.

Ans: B) One fuses with the egg and other fuses with central cell nuclei.

Which of the following glucose transporters is insulin-dependent?

A) GLUT II

B) GLUT IV

C) GLUT I

D) GLUT III

Ans: B) GLUT IV

Which of the following can be used as a biocontrol agent in the treatment of plant disease?

A) Chlorella

B) Anabaena

C) Lactobacillus

D) Trichoderma

Ans: D) Trichoderma

Which of the following statements regarding mitochondria is incorrect?

A) Outer membrane is permeable to monomers of carbohydrates, fats and proteins.

B) Mitochondrial matrix contains single circular DNA molecule and ribosomes.

C) Enzymes of electron transport are embedded in outer membrane.

D) Inner membrane is convoluted with infoldings.

Ans: C) Enzymes of electron transport are embedded in outer membrane.

In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place?

A) Disruptive Selection

B) Cyclical Selection

C) Directional Selection

D) Stabilizing Selection

Ans: D) Stabilizing Selection

The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by :

A) Sutton Boveri

B) T.H. Morgan

C) Alfred Sturtevant

D) Gregor J. Mendel

Ans: C) Alfred Sturtevant

Which of the following immune responses is responsible for rejection of kidney graft?

A) Cell-mediated immune response

B) Humoral immune response

C) Inflammatory immune response

D) Auto-immune response

Ans: A) Cell-mediated immune response

Which of the following statements is incorrect?

A) Morels and truffles are edible delicacies.

B) Claviceps is a source of many alkaloids and LSD.

C) Conidia are produced exogenously and ascospores endogenously.

D) Yeasts have filamentous bodies with long thread-like hyphae.

Ans: D) Yeasts have filamentous bodies with long thread-like hyphae.

Which of the following muscular disorders is inherited ?

A) Tetany

B) Myasthenia gravis

C) Botulism

D) Muscular dystrophy

Ans: D) Muscular dystrophy

What map unit (Centimorgan) is adopted in the construction of genetic maps?

A) A unit of distance between two expressed genes representing 10% cross over

B) A unit of distance between genes on chromosomes, representing 50% cross over.

C) A unit of distance between genes on chromosomes, representing 1% cross over.

D) A unit of distance between two expressed genes representing 100% cross over.

Ans: C) A unit of distance between genes on chromosomes, representing 1% cross over.

What is the direction of movement of sugars in phloem?

A) Upward

B) Non-multidirectional

C) Downward

D) Bi-directional

Ans: D) Bi-directional

Which of the following statements is incorrect?

A) Infective constituent in viruses is the protein coat.

B) Viroids lack a protein coat.

C) Viruses are obligate parasites.

D) Prions consist of abnormally folded proteins.

Ans: A) Infective constituent in viruses is the protein coat.

Which of the following sexually transmitted diseases is not completely curable?

A) Gonorrhoea

B) Genital herpes

C) Chlamydiasis

D) Genital warts

Ans: B) Genital herpes