R4RIN – MCQs, Mock Tests | ICSE XII MCQ Questions for Class 12 Biology Set 6

Who discovered Restricted endonucleas enzymes?

1. Smith and Nathane
2. Baiger
3. Waxman
4. Fleming

✅ Correct Answer: 1

DNA obtained for DNA finger printing:

1. W.B.C.
2. Hair root cells
3. Body fluids
4. None of these

✅ Correct Answer: 1

Two microbes found tb be very useful in Genetic Engineering are:

1. Excherichia coli and Agrobacterium tumefaciens
2. Vibrio cholarae and a tailed bacteriophage
3. Diplococcus sp. and Pseudomonas sp.
4. Crown gall bacterium and Caenorhabdities elegans

✅ Correct Answer: 1

Plasmid is a:

1. Fungus
2. Plasmid
3. Part of Plasma membrane
4. Extra chromosomal DNA in bacterial cell

✅ Correct Answer: 4

Restriction endonuclease cuts:

1. One stand of DNA at specific site
2. Both strands of DNA
3. Both strands of DNA at any site
4. Single strand of RNA

✅ Correct Answer: 2

Restrictipn endonucleases are most widely used in recombinant DNA technology. They are obtained from :

1. Plasmids
2. AH prokaryotic cells
3. Bacteriophages
4. Bacterial cells

✅ Correct Answer: 4

Golden rice is a promising transgenic crop. When released for cultivation, it will help in :

1. High lysin content
2. Pest resistance
3. High protien content
4. High vitamin A content

✅ Correct Answer: 4

Triticale, first man made cereal crop, has been obtained by crossing wheat with:

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

✅ Correct Answer: 4

Viral genome incroporatcd into host DNA is called:

1. Prophase
2. Protophage
3. Bacteriophage
4. None of these

✅ Correct Answer: 3

DNA element with ability to change its position is called:

1. Cistron
2. Transposon
3. Intron
4. Ricon

✅ Correct Answer: 3

Restriction Endonuclease used in RDT obtained from:

1. Plasmid
2. Bacterial ceils
3. Bacterophages
4. All Prokaryotic cells

✅ Correct Answer: 2

Recombinant DNA technology discovered by:

1. Hargobind Khoorana
2. James D. Watsan
3. S. Kohen and H. Boer
4. Sulton and Boveri

✅ Correct Answer: 3

Biopiracy is related to the following:

1. Traditional knowledge
2. Biomolecules and Bioresources, Isolation of gene from Bioresources
3. Bioresources
4. All of the above

✅ Correct Answer: 4

Some bacterial occured B-7 Toxin’s crystal not kill the Bacteria because of:

1. Bacteria is Antoxin
2. Toxin is unripened
3. Toxin is inactive
4. Bacteria enclosed toxin a special sell

✅ Correct Answer: 3

Desired properties plants and Animals are possible by Which reproduction.

1. Genetic Engineering
2. Chromosomal Engineering
3. Ekabana technology
4. Bonsai technology

✅ Correct Answer: 1

By means of following Trans gene expression obtained:

1. Inhibition of a Innate gene
2. An occured Biosynthetic passway develop
3. A protein occured with genotype expressed his desired
4. None of the above

✅ Correct Answer: 4

First Transjenic crop was :

1. Cotton
2. Alsi
3. Pea
4. Tobacco

✅ Correct Answer: 4

Adjoining of exotic gene is crop is called :

1. Genetic Engineering
2. Bio architecture
3. Tissue culture
4. Immunisation

✅ Correct Answer: 1

Transgenic Bacteria and m the making of following :

1. Epinephrin
2. Human Insullin
3. Glutanin
4. Thyroxin

✅ Correct Answer: 2

Transgenic Golden Rice Highly Nutrient value for:

1. Lysine
2. Methionine
3. Glutanin
4. Vitamin-A

✅ Correct Answer: 4

B7 Toxsin is :

1. Intracellular lipid
2. Intracellular crystal protein
3. Extracellular Crystal protein
4. Lipid

✅ Correct Answer: 2

In a Transgenic crop gene for following:

1. New protein synthesis
2. Resistance from Antibiotics
3. In the formation enzyme for Antibiotics
4. All of these

✅ Correct Answer: 4

Monoclonal antibodies are obtained from:

1. One parent for one antigen
2. Different parents for one antigen
3. One parent for many antigens
4. Many parents for many antigens

✅ Correct Answer: 2

Which Vitamin has been transferred to golden rice?

1. Vit-B12
2. Vit-A
3. Vit-D
4. Vit-C

✅ Correct Answer: 2

Which one of the following is a step of PCR?

1. Denaturation
2. Annealing
3. Extension
4. All of these

✅ Correct Answer: 1

The Ti plasmid used in genetic engineering is obtained from:

1. Bacillus thruingiensis
2. E. Coii
3. Agrobacterium hizogenes
4. Agrobacterium tumefaciens

✅ Correct Answer: 4

From which one of the following plants, the insecticide pyrethrum is prepared.

1. Cymohopogen
2. Tephrosia
3. Crysanthemum
4. Vitivera

✅ Correct Answer: 3

The sheep ‘Dolly’ was cloned by using somatic cells from donor’s:

1. Udder
2. Skin
3. Tongue
4. Earlobe

✅ Correct Answer: 3

The confirmatory test used to diagnose AIDA is:

1. ELISA
2. Western Plot
3. ESR
4. PCR

✅ Correct Answer: 1

Natural genetic engineer is :

1. Bacillus subtilis
2. Pseudomonas sp.
3. Escherichia coli
4. Agrobacterium tumefaciens

✅ Correct Answer: 1

Bt toxin is :

1. Intracellular lipid
2. Intracellular crystalline protein
3. Extracellular crystalline protein
4. Lipid

✅ Correct Answer: 1

Golden rice is a transgenic crop of the future with the following improved trail:

1. Insec resistance
2. Hight lysine (essential amino acid) content
3. High protein content
4. High vitamin A content

✅ Correct Answer: 3

First biochemical to be produced commercially by microbial cloning and genetic engineering:

1. Human insulin
2. Penicillin
3. Interferons
4. Fertility factor

✅ Correct Answer: 2

A technology which has found immense use in solving cases of disputed percentage is:

1. Polymerase chain reaction
2. DNA finger printing
3. None of these
4. Both (a) and (b)

✅ Correct Answer: 2

Anticoagulant hirudin is found in:

1. In Snake
2. In Lizard
3. In Leech
4. In Scorpion

✅ Correct Answer: 3

Herbicide resistant gene in plants is:

1. Ct
2. Mt
3. Bt
4. Gst

✅ Correct Answer: 4

The species used as natural genetic engineer is :

1. Agrobacterim tumefaciens
2. Bacillus thruingiensis
3. Aspergillus
4. Drosophila

✅ Correct Answer: 4

Most widely used Bioweapon is:

1. Bacillus subtilis
2. Biometallurgial techniques
3. Bacillus anthracis
4. Bioinsecticidal plant

✅ Correct Answer: 4

Bacillus thruingiensis (Bt) strains have been used for designing nobel:

1. Biofertilizers
2. Biometallurgical techniques
3. Biomineralization processes
4. Bioinsecticidal plants

✅ Correct Answer: 1

Habitat together with functions of a species constitute its:

1. Topography
2. Trophic level
3. Boundary
4. Ecological niche

✅ Correct Answer: 4

The maximum growth rate occurs in :

1. Lag phase
2. Exponential, phase
3. Stationary phase
4. Senescent phase

✅ Correct Answer: 2

In which one of the following habitats, does the diurnal temperature of soil surface veiw most?

1. Shrub land
2. Forest
3. Desert
4. Grassland

✅ Correct Answer: 3

Science linking heredity with environment is:

1. Ecology
2. Ecophysiology
3. Genecology
4. Genetics

✅ Correct Answer: 3

Submerged hydrophytes havedisseced leaves for:

1. Decreasing surface area
2. Increasing surface area
3. Reducing effect pf water currents
4. Increasing number of stomata

✅ Correct Answer: 3

Water holding capacity is maximum in:

1. Clay
2. Sand
3. Silt
4. Gravel

✅ Correct Answer: 1

Animals undergo inactive stage during winters. It is called :

1. Acclimatisation
2. Hibernation
3. Aestivation
4. Adapatation

✅ Correct Answer: 2

Praying mantis is a good example of:

1. Camouflage
2. Mullarian mimicry
3. Warning colouration
4. Social insect

✅ Correct Answer: 1

Niche overlap is:

1. Mutualism between two species
2. Active cooperation between two species
3. Tjvo different parasites on same food
4. Sharing resources between two species

✅ Correct Answer: 4

Animals have innate ability to escape from predation. Select the incorrect example:

1. Colour change in Chameleon
2. Enlargement of body by swallowing air in puffer fish
3. Poison fangas of snakes
4. Melaninin in moths

✅ Correct Answer: 3

Ozone protects biosphere from high energetic:

1. Infra-red rays
2. Ultraviolet rays
3. X-rays
4. gamma rays

✅ Correct Answer: 2