NEET (UG) 2025 Zoology Questions

Polymerase chain reaction (PCR) amplifies DNA following the equation:

What is the main function of the spindle fibers during mitosis?

Who proposed that the genetic code for amino acids should be made up of three nucleotides?

Identify the statement that is NOT correct regarding antibody structure.

Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs.
Choose the correct answer from the following:

Which one of the following equations represents the Verhulst-Pearl Logistic Growth of population?

Match List I with List II. Choose the correct answer from the options given below.
List I: A. Heart, B. Kidney, C. Gastro-intestinal tract, D. Adrenal Cortex
List II: I. Erythropoietin, II. Aldosterone, III. Atrial natriuretic factor, IV. Secretin

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell.
Reason (R): Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus.
In the light of the above statements, choose the correct answer from the options given below:

The first menstruation is called:

Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true?

After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s)/tissue(s) like:
A. thymus
B. bone marrow
C. spleen
D. lymph nodes
E. Peyer's patches
Choose the correct answer from the options given below:

Match List I with List II.
List I: A. Adenosine; B. Adenylic acid; C. Adenine; D. Alanine
List II: I. Nitrogen base; II. Nucleotide; III. Nucleoside; IV. Amino acid
Choose the option with all correct matches.

Why can't insulin be given orally to diabetic patients?

All living members of the class Cyclostomata are:

Match List I with List II. Choose the option with all correct matches.
List I: A. The Evil Quartet, B. Ex situ conservation, C. Lantana camara, D. Dodo
List II: I. Cryopreservation, II. Alien species invasion, III. Causes of biodiversity losses, IV. Extinction

Role of the water vascular system in Echinoderms is:
A. Respiration and Locomotion
B. Excretion and Locomotion
C. Capture and transport of food
D. Digestion and Respiration
E. Digestion and Excretion
Choose the correct answer from the options given below:

In frog, the Renal portal system is a special venous connection that acts to link:

The protein portion of an enzyme is called:

Match List - I with List - II.
List - I:
A. Progesterone
B. Relaxin
C. Melanocyte stimulating hormone
D. Catecholamines
List - II:
I. Pars intermedia
II. Ovary
III. Adrenal
IV. Corpus luteum
Choose the correct answer from the options given below:

Which of the following enzyme(s) are NOT essential for gene cloning?
A. Restriction enzymes
B. DNA ligase
C. DNA mutase
D. DNA recombinase
E. DNA polymerase
Choose the correct answer from the options given below: