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

● ● ● ● ●

Which of the following chromosome is absent in human beings

sub-metacentric chromosome

metacentric chromosome

acrocentric chromosome

telocentric chromosome

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

Explanation

telocentric is absent in human beings

● ● ● ● ●

Satellite body is formed in chromosome because of

primary constriction

secondary constriction

Centromere

Both A and C

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

Explanation

Refer NCERT,Heading 8.5.10, para 3, page 140

● ● ● ● ●

The mandatory combination responsible for assembly of microtubules are

$N a^{+}$ and $C a^{2 +}$

$M g^{2 +}$ and $C a^{2 +}$

$C l^{-}$ and $C a^{2 +}$

$N a^{+}$ and $K^{+}$

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

Explanation

Richard Weinsberg (1972) reported the tubulin polymerisation by addition of $M g^{2 +}$ and $C a^{2 +}$ . Microtubule could be disassembled and reassembled over and over by changing on concentration and lowering and raising the temperature.

● ● ● ● ●

What is correct about the movement of substance across the membrane in facilitated diffusion?

It is an active transport.

It cause transport of molecules from low concentration to high concentration.

It is insensitive to inhibitors.

It is a very specific transport.

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

Explanation

(d) : In facilitated diffusion special proteins help move substances across membranes along the concentration gradient without expenditure of energy. Facilitated diffusion is very specific, it allows cell to select substances for uptake. It is sensitive to inhibitors which react with protein side chains.

● ● ● ● ●

Find the correct one.

A. All the solutes have lower water potential than pure water given that solution is under external pressure B. All the solutions have lower water potential than the pure water C. All the solutions have higher water potential than the pure water D. All the solutions have lower water potential than pure water unless solution is under such external pressure which is more than the solute potential

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

Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

Hint: Formula of Water Potential

● ● ● ● ●

For a solution at atmospheric pressure

A. Solute potential is more than water potential B. Water potential more than solute potential C. Solute potential is less than water potential D. Water potential is equal to solute potential

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

Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

● ● ● ● ●

Plants have

A. Positive water potential when cells get turgor pressure B. Negative water potential when water is transported up a stem C. Negative pressure is developed in the cell dure to turgor pressure D. Both A and B

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

Explanation

11.2.1 Water Potential

Page number-180

Transport in Plants

● ● ● ● ●

If the cell gets water from surroundings, now a certain pressure develops inside it against the wall is called as

A. Turgor pressure B. Wall pressure C. Osmotic Pressure D. Solute pressure

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

Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

● ● ● ● ●

Cell wall is

A. Freelly permeable B. Impermeable C. Semipermeable D. Selectively permeable

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

Explanation

11.2.2 Osmosis

Page number-179

Transport in Plants

● ● ● ● ●

In plant cell

A. Solute potential is contributed by cytoplasm B. Solute potential is contributed by cytoplasm and as well as vacuolar sap C. Solute potential is because of vacuolar sap only D. Solute potential is caused by nucleoplasm

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

Explanation

11.2.2 Osmosis

Page number-180

Transport in Plants

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.