Year-wise Biology practice
RE-NEET 2026 Biology PYQs Check your understanding, bookmark questions and revisit your mistakes.
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90 questions in this collection · Page 4 of 9
Cell Cycle And Cell Division
Given below are two statements:Statement I: Chromosomes are fully condensed at the end of prophase I.Statement II: Meiosis I resembles mitosis.
A Both Statement I and Statement II are true B Both Statement I and Statement II are false C Statement I is correct, but Statement II is false D Statement I is incorrect, but Statement II is true
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Chromosomes become fully condensed during diakinesis. Meiosis I is reductional, whereas meiosis II resembles mitosis.
Animal Kingdom
Which of the following is not a characteristic of chordates?
A Presence of notochord B Central nervous system is dorsal C Absence of gills D Presence of post anal part (tail)
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Chordates possess pharyngeal gill slits during some stage of life.
Plant Growth And Development
Length of the stem at time 0 is 20 cm. The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the 7th day?
A 50 cm B 170 cm C 230 cm D 460 cm
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Length = 20 + (30 × 7) = 230 cm.
Biomolecules
Arrange the following elements in descending order of their contribution to percentage weight of the human body.
A (a), (b), (c), (d) B (c), (a), (b), (d) C (b), (c), (d), (a) D (b), (a), (c), (d)
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Oxygen contributes the highest percentage by weight, followed by carbon, hydrogen and nitrogen.
Structural Organisation In Animals
In frogs, the number of pairs of cranial nerves arising from the brain are _______.
A 6 B 9 C 10 D 12
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Frogs possess ten pairs of cranial nerves.
Microbes In Human Welfare
Which of the following is used as a clot buster?
A Streptokinase B Penicillin C Cyclosporin A D Statins
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Streptokinase is used as a clot buster to remove blood clots from the blood vessels of patients who have suffered myocardial infarction.
Biotechnology And Its Applications
The inactive form of Bt toxin is converted to the active form in the insect gut _______.
A Due to alkaline pH B Due to acidic pH C By proteases D By nucleases
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The Bt toxin exists as an inactive protoxin. The alkaline pH of the insect gut solubilises the crystals and converts the protoxin into its active form.
Principles Of Inheritance And Variation
Given below are two statements:Statement I: Down's syndrome is caused by the absence of one of the X-chromosomes.Statement II: Turner's syndrome is caused by the presence of an additional copy of the chromosomes.
A Both Statement I and Statement II are correct B Both Statement I and Statement II are incorrect C Statement I is correct but Statement II is incorrect D Statement I is incorrect but Statement II is correct
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Down's syndrome is caused by trisomy of chromosome 21. Turner's syndrome is caused by the absence of one X chromosome, resulting in the chromosome complement 45, XO.
Reproductive Health
Which of the following diseases is not sexually transmitted?
A Syphilis B Tuberculosis C Gonorrhoea D Genital warts
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Tuberculosis is primarily transmitted through airborne droplets. Syphilis, gonorrhoea and genital warts are sexually transmitted infections.
Human Reproduction
Sperm motility is due to _______.
A Flagellar movement B Ciliary movement C Amoeboid movement D Muscular movement
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The tail of a sperm acts as a flagellum. Its rhythmic movements propel the sperm through the reproductive tract.
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