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

Enzymes take part in a reaction and

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

(b) The enzymes are biological catalyst produced by living cells which increase the rate of biochemical reactions in living organisms.

Which one of the following is employed as a tranquiliser?

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

(a) The drugs which are used to reduce anxiety and for the treatment of mental diseases, are called tranquilisers. These drugs are also known as pyschotherapeutic drugs. Luminal, seconal and equanil are some commonly used and is an example of tranquiliser

In reference to biological role, Ca2+ ions are important in

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

Calcium ions (Ca2+) are key second messengers in a variety of eukaryotic cell signaling pathways, and they function in the regulation of diverse cellular processes. While it has become clear that Ca2+ stimulates many cellular processes, such as muscle contractioncellular proliferation, gene expression, secretion of hormones and neurotransmittersexocytosis, and chemotaxis

Select the incorrect statement among the following

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

 

Ampicillin is a semi-synthetic derivative of penicillin that functions as an orally active broad-spectrum antibiotic.

A medicine which promotes the secretion of urine is called:

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

An example of a psychedelic agent is:

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

(b) A psychedelic drug produce visual and auditory hallucinations, e.g, lysergic acid diethyl amide (LSD) and mescaline.

Which of the following drugs is an analgesic?

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

(c)

An analgesic drug is one which relieves or decreases the pain, e.g., analgin, aspirin (belongs to non-narcotics class) and morphine, codeine, heroin (belongs to narcotics class).

Which of the following drugs is a tranquillizer and sedative?

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

(c)

Tranquillizers reduce anxiety and tension. They are also called psychotropic drugs. These are of two types: (a) Sedative: The drugs used for violent and mentally agitated patients e.g., equanil and diazepam. (b) Antidepressant: The drugs are used to patients who are highly depressed and lose self confidence e.g., tofranil, vitalin, amphetamines, etc.

Which of the following is a hallucinogenic drug?

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

(c) A psychedelic drug produce visual and auditory hallucinations, e.g., lysergic acid diethyl amide (LSD) 

lysergic acid, which is found in ergot, a fungus that grows on rye and other grains. It is so potent its doses tend to be in the microgram (mcg) 

LSD causes it's characteristic hallucinogenic effects via interaction with the serotonin receptors in the brain. Serotonin is a neurotransmitter that helps control your behavior and mood, governs your senses, and moderates your thoughts.

The first viral disease detected in human being was:

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

(d) Yellow fever was the first viral disease detected in human being.

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.