NEET Zoology Previous Year Questions (PYQs)

Question 401 of 407

🟢 NEET 2026 📘 CLASS XII 🌿 Human Reproduction

Spermatogonia undergo a series of cell divisions to produce sperms. Select the correct statements from the following:

(A) Spermatogonia always undergo meiotic cell division.
(B) Primary spermatocytes divide mitotically to produce secondary spermatocytes.
(C) Secondary spermatocytes, through their second meiotic division, produce haploid spermatids.
(D) Spermatids produce spermatozoa through mitosis.
(E) Spermatids transform into spermatozoa by spermiogenesis.

Choose the correct answer from the options given below:

Spermatogonia divide mitotically. Primary spermatocytes undergo meiosis I to form secondary spermatocytes. Secondary spermatocytes undergo meiosis II to produce spermatids, which transform into spermatozoa by spermiogenesis.

Question 402 of 407

🟢 NEET 2026 📘 CLASS XI 🌿 Body Fluids And Circulation

Select the incorrect statements with reference to Rh grouping.

(A) Erythroblastosis foetalis is a condition observed having foetus with Rh^- blood and mother with Rh⁺ blood.
(B) Rh antigen is observed on RBCs in the majority of human beings.
(C) Before blood transfusion, Rh group should also be matched.
(D) Rh incompatibility is observed when a pregnant mother is Rh^- and the foetus is Rh⁺.
(E) Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child.

Choose the answer from the options given below:

Statement A is incorrect because erythroblastosis foetalis occurs when the mother is Rh^- and the foetus is Rh⁺. Statement E is incorrect because anti-Rh antibodies are administered immediately after the delivery of the first Rh⁺ child, not the second.

Question 403 of 407

🟢 NEET 2026 📘 CLASS XI 🌿 Animal Kingdom

Select the set of fishes which belong to the class Osteichthyes:

Flying fish, angel fish and fighting fish are bony fishes (Osteichthyes). The remaining organisms either belong to Chondrichthyes or are not fishes.

Question 404 of 407

🟢 NEET 2026 📘 CLASS XII 🌿 Principles Of Inheritance And Variation

In a population of a grasshopper species, the chromosome number of some members is 23 and some other members possess 24 chromosomes. The 23 and 24 chromosome-bearing members in this species are ________.

Grasshoppers show the XO type of sex determination. Males possess 23 chromosomes (XO), whereas females possess 24 chromosomes (XX).

Question 405 of 407

🟢 NEET 2026 📘 CLASS XII 🌿 Evolution

Evolution of human appears parallel to the progressive development of brain and language skills. As such, the evolution of individual species in the sequence of their appearance is:

According to NCERT, the evolutionary sequence is Ramapithecus → Homo habilis → Homo erectus → Neanderthal man → Homo sapiens.

Question 406 of 407

🟢 NEET 2026 📘 CLASS XI 🌿 Neural Control And Coordination

The specific receptors for neurotransmitters in a synapse are present on ______.

Neurotransmitters released from the presynaptic neuron bind to specific receptors present on the postsynaptic membrane to transmit the nerve impulse.

Question 407 of 407

🟢 NEET 2026 📘 CLASS XI 🌿 Breathing And Exchange Of Gases

Match List-I with List-II.

List-I (Respiratory Volume)	List-II (Capacity)
A. ERV (Expiratory Reserve Volume)	I. 2500–3000 mL
B. RV (Residual Volume)	II. 500 mL
C. IRV (Inspiratory Reserve Volume)	III. 1000–1100 mL
D. TV (Tidal Volume)	IV. 1100–1200 mL

ERV is about 1000–1100 mL, RV is about 1100–1200 mL, IRV is about 2500–3000 mL and TV is about 500 mL in a healthy adult.

NEET Zoology PYQs