R4RIN – MCQs, Mock Tests | ICSE XII MCQ Questions for Class 12 Biology Set 5

Allegens:

1. Infectious and increase secretion of IgE antiboides
2. Non-infectious and increase secretion of IgE antibodies
3. Infectious and increase secretion of IgS antibodies
4. Non-infectious and increase secretion of IgM antibodies

✅ Correct Answer: 2

Both sickle cell anaemia and Huntington’s chores are:

1. Bacerial diseases
2. Congenital diseases
3. Pollution related diseases
4. Viral diseases

✅ Correct Answer: 2

In AIDS, which of these cells are most affected:

1. B-cells
2. T-cells
3. Monocytes
4. Neutrophils

✅ Correct Answer: 2

Passive immunity can be obtained by injecting:

1. Antibodies
2. Antigens
3. Antibiotics
4. Vaccination

✅ Correct Answer: 1

Changa’s disease is caused by:

1. Trypanosoma ganabiense
2. Trypanosoma Cruzi
3. Trypanosoma-rhodesiense
4. Leishmania donovani

✅ Correct Answer: 2

Which of the following disease effect the immune system directly?

1. Cholera
2. Tuberculosis
3. Tetanus
4. AIDS

✅ Correct Answer: 4

Which of the following vaccines are injected at the age of 11/2, 21/2 and 31/2 months:

1. DPT-Hib and Polio
2. Polio and BCG
3. BCG and DTP-Hib
4. BCG and Hepatitis-B

✅ Correct Answer: 1

The drug which stimulates the nervous system and makes him more wakeful alert and active is called :

1. Sedative
2. Opiate narcotic
3. Stimulant
4. Hallucinogen

✅ Correct Answer: 3

Ascaris is most commonly found in:

1. Men
2. Women
3. Children
4. Both (a) and (b)

✅ Correct Answer: 3

Kupffer cells are present in:

1. Liver
2. Small intestine
3. Pancreas
4. Thyroid

✅ Correct Answer: 1

Intermediate host of Schistosoma is:

1. Snail
2. Mosquito
3. Housefly
4. Sheep

✅ Correct Answer: 4

A person showing unpredicatable moods, outbursts of emotion quarrelsome behaviour and conflicts with other is suffering from:

1. Addictive disorders
2. Schizophrenia
3. Borderline personality disorder (BOD)
4. Mood disorders

✅ Correct Answer: 3

Current treatment for cancer does not include which of the following:

1. Chemotherapy
2. Radiaotherapy
3. Surgery
4. Physiotherapy

✅ Correct Answer: 4

Screening test of AIDS is:

1. Western blot
2. ALISA
3. PCR
4. Southern blot

✅ Correct Answer: 2

The vactor of Break bone fever is:

1. Anopheled
2. Aedes
3. Culex
4. None of these

✅ Correct Answer: 3

An allergic reaction is intiated by antibodies of, group :

1. IgG
2. IgE
3. IgM
4. IgA

✅ Correct Answer: 2

In Malaria, the product released by mosquito into blood that causes chill and fever is called:

1. Haematin
2. Schuffher’s dots
3. Haemozoin
4. Haemotoxin

✅ Correct Answer: 2

HIV that causes AIDS, first starts destroying:

1. Helper T-lymphocytes
2. B-Lymphocytes
3. Leucocytes
4. Thrombocytes

✅ Correct Answer: 1

Morphine obtained from opium is:

1. Latex
2. Pome
3. Alkaloid
4. Tannin

✅ Correct Answer: 3

Zoological name of Indian buffalo is:

1. Bubalus bubalus
2. Bos indicus
3. Bos taurus
4. Gallusgallus

✅ Correct Answer: 1

The best milk breed in the world is:

1. Chittgong
2. Deoni
3. Holstein-Friesian
4. Sindhi

✅ Correct Answer: 3

There crops that contribute maximum to global food grain production are :

1. Wheat, rice and maize
2. Wheat rice and barley
3. Wheat, maize and sorghum
4. Rice, maize and sorghum

✅ Correct Answer: 1

The world’s highly prized wool yielding ‘Pashmina’ breed is :

1. Sheep
2. Goat
3. Goat-sheep cross
4. Mashmir sheep-Afghan sheep cross

✅ Correct Answer: 2

Both in callus and suspension culture commonly used auxin is:

1. NAA
2. IEA
3. 2-4D
4. Abscisic acid

✅ Correct Answer: 3

Somatic hybridization can be done by:

1. By Protoplast fusion
2. By Haploid anther
3. By Cell culture
4. (By Totipotency

✅ Correct Answer: 1

India’s w heat yield revolution in the 1986s was possible primarily due to:

1. Mutations resulting in the plant height reduction
2. Quantitative trait mutations
3. Hybrid seeds
4. Increased chlorophyll content

✅ Correct Answer: 3

One of the following is a disease of poultry:

1. Anthrax
2. Pebrine disease
3. Ranikhet disease
4. Foot and mouth disease

✅ Correct Answer: 3

Choose the cat fish from the following:

1. Katla Katla
2. Wallage attu
3. Labeo rohita
4. Cirrhinus mrigaja

✅ Correct Answer: 2

The technique of obtaining large number of plantlets by tissue culture method is called :

1. Organ culture
2. Micro-propagation
3. Macro-propagation
4. Plantlet culture

✅ Correct Answer: 2

Most cultivated plants are:

1. Autopolyploid
2. Allopolyploid
3. Aneuploids
4. Haploids

✅ Correct Answer: 2

Triticale first main-made corral crop has been obtained by crossing wheat with

1. Rye
2. Pearl mille
3. Sugarcane
4. Barley

✅ Correct Answer: 1

Most nutritious among the following is:

1. Wheat
2. Maize
3. Pearley
4. Rice

✅ Correct Answer: 3

Hybrid vagour is induced by:

1. By Clonal selection
2. By Crossing of plant
3. By crossing of two plants
4. By Species differentiation

✅ Correct Answer: 3

Norman Borlaugh known as “Father of Green Revolution” has developed new cultivating variety of:

1. Paddy
2. Rice
3. Wheat
4. Sugarcane

✅ Correct Answer: 3

Bacillus thuringiensis (Bt) strains have been used for designing novel:

1. Bio-metallurigcal techniques
2. Bio-mineralization process
3. Bio-insecticidal plants
4. Bio-fertilizers

✅ Correct Answer: 3

Streptococcus is used in the preparation of:

1. Wine
2. Idli
3. Paneer
4. Bread

✅ Correct Answer: 3

Nif gene occurs in:

1. Peiiicillium
2. Rhizobium
3. Aspergillus
4. Streptococcus

✅ Correct Answer: 2

Azoila has symbiotic relationship with:

1. Chlotfila
2. Anabaena
3. Nostoc
4. Tolypothrix

✅ Correct Answer: 2

Term antibiotic was first used by :

1. Flemming
2. Pasteur
3. Waksman
4. Lister

✅ Correct Answer: 3

A free living anaerobic nitrogen fixing bacterium is:

1. Rhizobium
2. Streptococcus
3. Azotobactor
4. Clostridium

✅ Correct Answer: 4

Citric acid is produced by:

1. Rhizopus
2. Mucor
3. Aspergillus
4. Saccharomyces

✅ Correct Answer: 1

In nostoc, enzyme nitrogenase occurs in :

1. Vegetative cells
2. Heterocysts
3. Both (a) and (b)
4. Only in hormogones

✅ Correct Answer: 3

Usnic acid is an antibiotic obtained from :

1. Fungi
2. Bacteria
3. Lichens
4. (Algae

✅ Correct Answer: 3

By anobacteria are useful biofertilizers in the; field of:

1. Wheat
2. Maize
3. Rice
4. Sugarcane

✅ Correct Answer: 3

Streptomycin is produced by:

1. By Streptomyces Scoleus
2. By Streptomyces fradiae
3. By Streptomyces venezueleae
4. By Streptomyces griseus

✅ Correct Answer: 4

Antibiotics are:

1. Medicines
2. Toxin
3. Plants
4. Syrups

✅ Correct Answer: 1

A free-living aerobic and non-photosynthetic nitrogen fixing bacterium is:

1. Anabaena
2. Clostridium
3. Azotobactor
4. Rhizobium

✅ Correct Answer: 3

For retting of jute, the fermenting microbe is:

1. Methanophilic bacteria
2. Butyric acid bacteria
3. Helicobactor pylon
4. Streptococcus lactin

✅ Correct Answer: 2

Transgenic plants are develop by:

1. Introducing of foreign fenes
2. Clone and genetically modified genes
3. Genetic engineering
4. Purified genes

✅ Correct Answer: 1

Two microbes found to be very useful in genetic, engineering are:

1. Escherichiya Coli and Agrobacterium tumefaciens
2. Virbio chloerae and tailed bacteriophage
3. Diplococcus sp and pseudomonas sp.
4. (None of these

✅ Correct Answer: 1