Blog Log in Get Started Free

Zoology MCQs for NEET — Practice Questions with Answers

Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

All Physics Chemistry Botany Zoology

Chapter Language Difficulty Show only questions I answered incorrectly Register free to filter questions

● ● ● ● ●

Transgenic plants are

produced by a somatic embryo in artificial medium

generated by introducing foreign DNA in to a cell and regenerating a plant from that cell

produced after protoplast fusion in artificial medium

grown in artificial medium after hybridisation in the field

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(b) The plants obtained through genetic engineering contain a gene or genes usually from an unrelated organism, such genes are called transgenes and the plants containing transgenes are known as transgenic plants. These plants are often called as genetically modified or GM crops, eg, Flavr savr tomatoes, golden rice. Plants are made transgenic for identification, expressing the gene activity in tune, to produce several chemicals like fatty acids, sugars, cellulose, rubber, etc.

● ● ● ● ●

In cloning of cattle a fertilized egg is taken out of the mother's womb and:

the egg is divided into 4 pairs of cells which are implanted into the womb of other cows

in the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cows

in the eight cell stage the individual cells are separated under electrical field for further development in culture media

from this upto eight identical twins can be produced

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(b) In cloning of cattle a fertilized egg divides in 2, then in 4 and then in 8. This embryo is carefully removed from the womb. The embryonic cells are then separated using enzyme. Each isolated cell is kept in a nutrient medium and later implanted in the womb of a different 'host mother' cow.

● ● ● ● ●

In maize, hybrid vigour is exploited by:

bombarding the seeds with DNA

crossing of two inbred parental lines

harvesting seeds from the most productive plants

inducing mutations

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(b) Hybrid varieties were first developed in maize, which is a cross-pollinated crop. In such crops, the parents of hybrid varieties are ordinarily, inbred lines. An inbred line is a nearly homozygous line produced by continuous inbreeding in a cross-pollinated crop and is maintained by strict inbreeding. In maize, hybrid vigour or heterosis is exploited by the crossing of two inbred parental lines.

● ● ● ● ●

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

alleviation of vitamin- A deficiency

pest resistance

herbicide tolerance

producing a petrol-like fuel from rice

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(a) A plant in which a gene has been transferred through genetic engineering is called a transgenic plant and the gene, so transferred is called a transgene. Golden rice is a promising transgenic crop which when released for cultivation will help in alleviation of vitamin A deficiency.

● ● ● ● ●

Genetically engineered bovine (bST), sometimes called rbST (recombinant bovine somatotropin) or rbGH (recombinant bovine growth hormone) are used in the.

therapeutic drugs

agriculture

dairy industry

DNA fingerprinting

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

These hormones are used in the dairy industry, when injected into cows would increase their milk production.

● ● ● ● ●

Pusa Sawani is a variety of

A. Okra B. Flat bean C. Rapeseed mustard D. Cowpea

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number -175

Table -9.2

9.2.3 Plant Breeding For Developing Resistance to insect pests

Strategies For Enhancement In Food Production

● ● ● ● ●

Pusa A-4 is not related to which of the following?

A. Shoot and Fruit borer resistance B. Okra C. Aphids resistance D. Bhindi

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number -175

Table -9.2

9.2.3 Plant Breeding For Developing Resistance to insect pests

Strategies For Enhancement In Food Production

● ● ● ● ●

Which of the following is not related with Rapeseed mustard?

A. Pusa Gaurav B. Pusa sem 2 C. Aphid resistance D. Both B and C

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number -175

Table -9.2

9.2.3 Plant Breeding For Developing Resistance to insect pests

Strategies For Enhancement In Food Production

● ● ● ● ●

To induce mutations artificially through use of chemicals or radiations(like gamma radiations) and selecting and using the plants that have the desirable character as a source in breeding -

A. Mutation Breeding B. Conventional breeding C. Hybrid breeding D. Cultivar breeding

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number -174

9.2.2 Plant Breeding for Disease Resistance

Strategies For Enhancement In Food Production

● ● ● ● ●

Prabhani Kranti is not related to

A. Resistance to yellow mosaic virus B. esculentus C. Resistance against shoot borer D. Both B and C

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number -174

9.2.2 Plant Breeding for Disease Resistance

Strategies For Enhancement In Food Production

Ready to ace NEET?

Free access · No credit card required

Browse All Questions Create Free Account

Frequently Asked Questions

Yes. You can attempt every Zoology question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.

No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.

The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.