Explore topic-wise MCQs in NEET.

This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.

7351.

Which one will be best for germplasm collection [APMEE 1987]

A. Britain
B. France
C. Portugal
D. Peru
Answer» E.
7352.

The number of centres of origin of crop plants recognised by Vavilov is

A. 8
B. 11
C. 7
D. 21
Answer» C. 7
7353.

Germplasm is contained in [MP PMT 1986]

A. Somatic cells
B. Growing points
C. Reproductive cells
D. Both a and c
Answer» D. Both a and c
7354.

Dwarf Wheat varieties brought into India from Mexico were [DPMT 1986]

A. Sonora-64 and Sonalika
B. Sharbati Sonora and Pusa Lerma
C. Sonalika and Sharbati Sonora
D. Sonora-64 and Lerma Rojo-64
Answer» E.
7355.

Which plant was introduced from Old World to New World [DPMT 1983]

A. Potato
B. Rice
C. Corn
D. Sweet Potato
Answer» C. Corn
7356.

Co-varieties of sugarcane obtained red rot resistance from

A. Saccharum munja
B. S. spontaneum
C. S. arundinaceum
D. S. edula
Answer» C. S. arundinaceum
7357.

Cryopreservation is carried out at

A. \[{{10}^{o}}\] to \[{{20}^{o}}C\]
B. \[{{50}^{o}}\] to \[{{60}^{o}}C\]
C. \[{{196}^{o}}C\]
D. \[{{100}^{o}}C\]
Answer» D. \[{{100}^{o}}C\]
7358.

Which one will be searched for obtaining maximum genetic diversity

A. Recent varieties
B. Old varieties
C. Wild relatives
D. All the above
Answer» E.
7359.

Maximum genetic diversity of crop plants occurs where agriculture is

A. Run on commercial lines
B. Advanced
C. Rainfed
D. Primitive
Answer» E.
7360.

Post-Vavilov mega diversity centre is

A. Australia
B. Siberia
C. Andamans
D. Tibet
Answer» B. Siberia
7361.

Necrosis means

A. Yellow spots on the leaves
B. Death of tissue and decomposition
C. Darkening of green colour in leaves
D. None of the above
Answer» C. Darkening of green colour in leaves
7362.

'Vaccination' was invented by

A. Pasteur
B. Edward Jenner
C. Robert Koch
D. Robert Hooke
Answer» C. Robert Koch
7363.

How the mineral contents of the plant known

A. Titrimetric method
B. Calorimetric method
C. Ash analysis
D. All
Answer» E.
7364.

DPT vaccine is given for [Pb. PMT 2004]

A. Tetanus, polio, plague
B. Diphtheria, whooping cough and leprosy
C. Diphtheria, pneumonia, tetanus
D. Diphtheria, whooping cough, tetanus
Answer» E.
7365.

B.C.G. vaccine is used against [AFMC 2002, 05]

A. T.B.
B. Leprosy
C. Food poisoning
D.  None of these
Answer» B. Leprosy
7366.

AIDS is caused by HIV that principally infects [CBSE PMT 2005]

A. All lymphocytes
B. Activator B cells
C. T4 lymphocytes
D.  Cytotoxic T cells
Answer» D.  Cytotoxic T cells
7367.

Antibodies are produced by [AIEEE 2004]

A. Erythrocytes
B. Thrombocytes
C. Monocytes
D. Lymphocytes
Answer» E.
7368.

AIDS is characterised by a sharp reduction is [AFMC 2004]

A. Helper T-cells
B. Killer T-Cells
C. Suppressor T-Cells
D. B-lymphocytes
Answer» B. Killer T-Cells
7369.

HIV virus affects ?? in AIDS patient   [Orissa JEE 2004]

A. Cytotoxit T-cell 
B. M-N cell
C. Suppressor cells
D. Helper T-cells
Answer» E.
7370.

Hydroponics are [EAMCET 1989;Pb. PMT 1999; KCET 1999]

A. Growing of aquatic plants
B. Growing of floating aquatic plants
C. Growing of plants in sand
D. Growing of plants aqueous balanced nutrient
Answer» E.
7371.

'Pathogens' are also known as

A. Immune bodies
B. Antigens
C. Agglutinins
D. Autotoxins
Answer» C. Agglutinins
7372.

Which cell of immune system cause pore formation at the surface of the plasma membrane [Orissa JEE 2004]

A. Helper T-cell
B. Killer T-cell
C. Suppressor T-cell
D. B-cell
Answer» C. Suppressor T-cell
7373.

Humoral immunity is due to        [BHU 1985; Pb. PMT 2000; Orissa PMT 2002, 04]

A. B-lymphocytes
B. T-lymphocytes
C. L-Lymphocytes
D. P- Lymphocytes
Answer» B. T-lymphocytes
7374.

?ELISA? test is done for the diagnosis of [Pb. PMT 2004]

A. Anthrax
B. HIV
C. Hepatitis
D. Malaria
Answer» C. Hepatitis
7375.

Which one of the following pairs of disease can spread through blood transfusion [AIEEE 2004]

A. Cholera and hepatitis
B. Hepatitis and AIDS
C. Diabetes mellitus and malaria
D.  Hay fever and AIDS
Answer» C. Diabetes mellitus and malaria
7376.

The antibodies are [CBSE PMT 1999; BHU 2000]

A. Lipids
B. Germs
C. Proteins
D. Carbohydrates
Answer» D. Carbohydrates
7377.

The AIDS test is known as [DPMT 2003; BVP 2004]

A. ELISA
B. Australian antigen
C. HIV test
D.  None of these
Answer» B. Australian antigen
7378.

The term ?active immunity' means [CBSE PMT 1999; BHU 1999]

A. Resistance developed after disease
B. Resistance developed before disease
C. Resistance rate of heart beat
D. Increasing quantity of blood
Answer» B. Resistance developed before disease
7379.

AIDS causing factors are associated with [MP PMT 1999]

A. RNA virus
B. DNA virus
C. Bacteria
D. Protozoa
Answer» B. DNA virus
7380.

Full form of AIDS is [MP PMT 1999]

A. Anti immune deficiency syndrome
B. Auto immune deficiency syndrome
C. Acquired immune deficiency syndrome
D. Acquired immune disease symptom
Answer» D. Acquired immune disease symptom
7381.

An essential element is one [CPMT 1987; MP PMT 1990]

A. Improve plant growth
B. Present in plant ash
C. Is indispensable for growth and is irreplaceable
D. Available in soil
Answer» D. Available in soil
7382.

After infection by pathogens dead cells, dead pathogens and liquid form the

A. Antibodies
B. Excretory product
C. Pus
D. Agglutinin
Answer» D. Agglutinin
7383.

The factor responsible for cirrhosis of liver is [MP PMT 1998]

A. Sugar
B. Vitamins
C. Fats and oils
D. Alcoholism
Answer» E.
7384.

The antibodies are [MP PMT 1998]

A. Egamma-globulins
B. Albumins
C. Vitamins
D. Sugar
Answer» B. Albumins
7385.

Vaccines are prepared from immune [MP PMT 1998]

A. Vitamins
B. Blood
C. Serum
D. Plasma
Answer» D. Plasma
7386.

A molecule that elicits an immune response is called [MP PMT 1997]

A. Antibody
B. Antigen
C. Mutagen
D. Carcinogen
Answer» C. Mutagen
7387.

HIV causes reduction in [MP PMT 1997; BHU 2000]

A. T-helper cells only
B. All T-cells
C. B-cells only
D. Both B and T-cells
Answer» B. All T-cells
7388.

Which of the following is responsible for cellular immunity

A. B-lymphocyte
B. T-lymphocyte
C. Erythrocytes
D. Thrombocytes
Answer» C. Erythrocytes
7389.

Antibodies fight against

A. Infection
B. Thirst
C. Starvation
D. Stress
Answer» B. Thirst
7390.

Passive immunity was discovered by [CBSE PMT 1996]

A. Robert Koch
B. L. Pasteur
C. Edward Jenner
D. Eemil Von Behring
Answer» E.
7391.

Sensitivity to any allergen is related to [CBSE PMT 1996]

A. Deviation from the process of immunity
B. Age of the person
C. Eating habit
D. Rise in environmental temperature
Answer» B. Age of the person
7392.

Plant ash is an indication of [CPMT 1980]

A. Mineral salts absorbed by the plants
B. Organic matter of the plant
C. Only mineral salts
D. None of the above
Answer» D. None of the above
7393.

Period from the entrance of pathogens into the body and their multiplication to show initial symptoms of disease is known as

A. Incubation period
B. First period
C. Climax period
D. Infection period
Answer» B. First period
7394.

How does AIDS virus enter into man [MP PMT 1995]

A. Through food
B. Through kissing
C. Through water
D. Through blood
Answer» E.
7395.

Which of the glands is often referred in relation with AIDS [BHU 1995]

A. Thyroid
B. Thymus
C. Adrenal
D. Pancreas
Answer» C. Adrenal
7396.

Some people who have suffered from a disease may not be affected again during their life time; such immunity is called

A. Natural immunity
B. Acquired immunity
C. Active immunity
D. Passive immunity
Answer» C. Active immunity
7397.

AlDS from India was reported in

A. 1987
B. 1986
C. 1990
D. 1989
Answer» C. 1990
7398.

Myasthenia gravis is due to

A. Auto-antigens
B. Antigens
C. Toxins
D. Interferons
Answer» B. Antigens
7399.

Anaphylactic shock is due to

A. Allergic reaction
B. Secretion of toxins
C. Secretion of histamines
D. All the above
Answer» B. Secretion of toxins
7400.

An antigen is

A. Opposite to an antibody
B. Residue of an antibody
C. Stimulus for antibody formation
D. Result of antibody
Answer» D. Result of antibody