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Biology (Medical Entrance)

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Vesicular arbuscular mycorriza plays a role in:

  1. Nitogen fixation

  2. Sulphur nutrition

  3. Phosphorus nutrition

  4. All the above


Correct Option: C

Herbicide derived from urea is:

  1. 2-4 D

  2. Simazine

  3. Dinitrophenol

  4. 2-4 ST


Correct Option: B

Which of the following has played role in evolution of present day hexaploid wheat?

  1. Avena sativum

  2. Panicum miliaceum

  3. Aegilops indica

  4. Aegilops squarrosa


Correct Option: D

Virus free plants can be obtained from virus-infected plants by:

  1. Protoplast technology

  2. Culturing root tissue

  3. Culturing shoot apices

  4. None of the above methods


Correct Option: C

Which of the following provided resistance to potato virus-x in Solanum tuberosum?

  1. Solanum stoloniferum

  2. Phytophthora infestans

  3. S. acaule

  4. S. vernei


Correct Option: C

Which of the following yields jute?

  1. Corchorus sp.

  2. Crotalaria juncea

  3. Hibiscus cannabinus

  4. Zea mays


Correct Option: A

Shoot tip cultures are becoming a preferred material for international exchange of germ plasm because:

  1. these are not easily destroyed

  2. these are easily regenerated into new plants

  3. these produce virus free plants

  4. both (b) and (c)


Correct Option: D

First report of successful production of haploid plants from anther culture was made from:

  1. Petunia alba

  2. Datura innoxia

  3. Dahlia

  4. Phaseolus vulgaris


Correct Option: B

Early human civilization developed in:

  1. River valleys

  2. High mountains

  3. Forests

  4. Sea-shore


Correct Option: A

Recalcitrant plants are those which:

  1. withstand reduction in moisture

  2. are killed by freezing temperature

  3. are killed by high temperature

  4. withstand freezing temperature


Correct Option: B

Term antibiotic was coined by:

  1. Selman Walksman

  2. Louis Pasteur

  3. Babes

  4. Woodruff


Correct Option: A

Embryo rescue technique has not been used in hybridization of:

  1. Oryza sativa

  2. Zea mays

  3. Corchorus

  4. Lycopersicum


Correct Option: B

Which of the following is a millet?

  1. Zea mays

  2. Secale cereale

  3. Eleusine coracana

  4. Trifolium alexandrium


Correct Option: C

Best wood used as fuel is:

  1. gymnospermic wood

  2. that which is easy to dry, having low calorific value

  3. that which is resinous

  4. that which is highly combustible and does not split when ignited


Correct Option: D

Which is important source of resin?

  1. Cedrus

  2. Casuarina

  3. Quercus

  4. Pinus


Correct Option: D

Saffron is natural dye obtained from;

  1. Indigofera tinctoria

  2. Carthamuis tinctoria

  3. Crocus sativa

  4. Haematoxylon


Correct Option: B

Which hormone is/are necessary for callus formation in tissue culture?

  1. Auxins

  2. Gibberellins

  3. Cytokinins

  4. Both cytokinins and auxins


Correct Option: C

Commercial cork is obtained from:

  1. Quercus sativum

  2. Acacia catechu

  3. Quercus suber

  4. Terminalia


Correct Option: C

Androgenic haploids are:

  1. more resistant to disease than their diploid counterparts

  2. useful material for studying the effect of mutations

  3. used to obtain homozygous plants for a number of traits

  4. all of the above


Correct Option: D

Which of the following is the most nutritious fruit?

  1. Apple

  2. Banana

  3. Mango

  4. Orange


Correct Option: A

Composted manure is composed of:

  1. Cattle dung

  2. Animal excreta

  3. Rotten vegetables

  4. All of the above


Correct Option: D

Which plant yields non-edible oil?

  1. Cocos nucifera

  2. Ricinus communis

  3. Arachis hypogaea

  4. Piper niger


Correct Option: B

Which of the following is an example of bioherbicide?

  1. Phytophthora palmivora

  2. Stick insect

  3. 2-4 D

  4. Cinerin


Correct Option: A

Centre of origin of rubber is:

  1. Brazil

  2. Peru

  3. Central Asia

  4. Ethiopia


Correct Option: A

Triticale is an:

  1. Aneuploid

  2. Interspecific man-made hybrid

  3. Allotetraploid

  4. Autotetraploid


Correct Option: B
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