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
Register free to filter questions

Ti Plasmid is useful in

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

Ti Plasmid (Tumor-inducing Plasmid) is derived from the bacterium Agrobacterium tumefaciens and is commonly used in genetic engineering to transfer new genes into plant cells. It has the ability to integrate a segment of its DNA (T-DNA) into the plant genome, making it a powerful tool for plant genetic modification.

Many copies of a DNA molecule in a test tube are procurred by

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

Polymerase Chain Reaction (PCR) is a widely used technique in molecular biology to amplify a single or a few copies of a DNA segment into millions of copies. This is achieved by using a DNA polymerase enzyme to replicate the DNA in vitro, making it a crucial method for DNA analysis and research.

Which of the following is used in genetic engineering ?

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

Restriction endonucleases are enzymes that cut DNA at specific sequences, which is a crucial step in genetic engineering. These enzymes create recombinant DNA molecules by cutting and rejoining DNA fragments from different sources.

Which one of the following pairs is correctly matched ?

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

Restriction enzymes are crucial tools in genetic engineering as they cut DNA at specific sequences, allowing scientists to manipulate and study genes. This makes the pair correctly matched.

Plasmids are autonomouslyreplicating minichromosomes found in......

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

Plasmids are small, circular pieces of DNA that replicate independently of the chromosomal DNA. They are commonly found in Escherichia coli (E. coli) bacteria, making this the correct answer.

Improvement of genotype of an organism by addition of some foreign gene is

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

Genetic engineering aims to add new DNA to an organism to add one or more new favorable traits which are not found in that organism.

Two bacteria found to be veryuseful in genetic engineering experiments are

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

Escherichia coli (E. coli) and Agrobacterium tumefaciens are two bacteria commonly used in genetic engineering. E. coli is widely used as a model organism and for the production of recombinant proteins, while Agrobacterium is used to transfer genes into plants.

The organism whoes gene have been artificially altered for desired efect is called as

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

A genetically modified organism (GMO) is an organism whose genetic material has been artificially altered using genetic engineering techniques. This is done to introduce new traits or characteristics, such as resistance to pests or improved nutritional content.

The sequence of DNA that reads the same backward and forward across the double strand is

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

A palindromic sequence in DNA is a sequence of base pairs that reads the same forward and backward on the two strands of the double helix. For example, the sequence 5'-GAATTC-3' on one strand reads 3'-CTTAAG-5' on the complementary strand.

Ti Plasmid is a cloning vector which works with

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

The Ti plasmid (Tumor-inducing plasmid) is a type of plasmid from the bacterium Agrobacterium tumefaciens. It is commonly used as a cloning vector for introducing genes into dicot plants. Dicots are a group of flowering plants whose seeds typically have two embryonic leaves or cotyledons.

Ready to ace NEET?

Free access · No credit card required

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.