Year-wise Biology practice

RE-NEET 2026 Biology PYQs

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90 questions in this collection · Page 8 of 9

Question 71 of 90

🟢 Re NEET 2026 📘 CLASS XII

Human Health And Disease

Colostrum, secreted by the mother during the initial days of lactation, is abundant in

Colostrum is rich in IgA antibodies that provide passive immunity to the newborn.

Question 72 of 90

🟢 Re NEET 2026 📘 CLASS XII

Biodiversity And Conservation

Given below are two statements:

Assertion (A): Abingdon tortoise in Galapagos Islands became extinct within a decade after goats were introduced.

Reason (R): Goats were more efficient at browsing than Abingdon tortoise.

In the light of the above statements, choose the most appropriate answer from the options given below:

Introduced goats overgrazed vegetation, outcompeting the Abingdon tortoise for food and contributing to its extinction.

Question 73 of 90

🟢 Re NEET 2026 📘 CLASS XII

Human Reproduction

The covering of ovum at ovulation is

At ovulation, the secondary oocyte is surrounded by the zona pellucida and corona radiata. The principal covering is the zona pellucida.

Question 74 of 90

🟢 Re NEET 2026 📘 CLASS XII

Organisms And Populations

Match List-I with List-II:

List-I	List-II
A. Both species are harmed	I. Predation
B. One species is harmed and the other is benefited	II. Mutualism
C. Both species are benefited	III. Competition
D. One is benefited while the other has no effect	IV. Commensalism

Competition harms both species. Predation benefits one and harms the other. Mutualism benefits both species. Commensalism benefits one species while the other is unaffected.

Question 75 of 90

🟢 Re NEET 2026 📘 CLASS XII

Principles Of Inheritance And Variation

Given below are two statements:

Assertion (A): In an experiment, Mendel observed that the F₁ progeny plants are all tall and none are dwarf.

Reason (R): Stem height is a contrasting trait, with tall being dominant and dwarf being recessive.

In the light of the above statements, choose the most appropriate answer from the options given below:

In Mendel's monohybrid cross, the dominant allele for tallness masks the recessive dwarf allele, so all F₁ plants are tall.

Question 76 of 90

🟢 Re NEET 2026 📘 CLASS XII

Strategies For Enhancement In Food Production

Which of the following is used as an effective sedative and painkiller for treating post-surgery patients?

Morphine, obtained from the opium poppy (Papaver somniferum), is an effective analgesic and sedative used for relieving severe pain after surgery.

Question 77 of 90

🟢 Re NEET 2026 📘 CLASS XII

Ecosystem

Which of the following statements are correct?

(a) Energy flow from producers to consumers is unidirectional.
(b) Energy pyramid can never be inverted.
(c) Transfer of energy follows the 10% law.

Choose the correct answer from the options given below:

Energy flow is unidirectional, the pyramid of energy is always upright, and only about 10% of energy is transferred from one trophic level to the next.

Question 78 of 90

🟢 Re NEET 2026 📘 CLASS XII

Human Health And Disease

Which of the following statements is correct about Plasmodium?

The asexual life cycle occurs in humans, whereas fertilization and sexual reproduction occur inside the gut of the female Anopheles mosquito.

Question 79 of 90

🟢 Re NEET 2026 📘 CLASS XII

Biotechnology Principles And Processes

Match List-I with List-II:

List-I	List-II
A. Transformation	I. Restriction enzyme
B. Cloning site	II. Transfer DNA to host bacteria
C. Selection	III. Replication
D. Ori	IV. Antibiotic

Transformation transfers recombinant DNA into host bacteria. A cloning site contains restriction enzyme recognition sites. Antibiotic resistance genes are selectable markers, and ori is the origin of replication.

Question 80 of 90

🟢 Re NEET 2026 📘 CLASS XI

Locomotion And Movement

The number of vertebrae in a human is _____.

The adult human vertebral column consists of 26 vertebrae: 7 cervical, 12 thoracic, 5 lumbar, 1 sacrum and 1 coccyx.

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