Question 1
The leaf cells of a flowering plant have 16 chromosomes each. How many chromosomes are present in a synergid, a cell of the endosperm and a cell of the embryo, in that order?
NEET Biology practice questions by unit
Original questions for every unit in all five NEET forms, each with a worked answer and the reason each wrong option is wrong.
| Units | All ten, Botany and Zoology |
|---|---|
| Forms | Standard, assertion-reason, statements, count, match |
| Feedback | Why the answer is right and each wrong option wrong |
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Question 2
Given below are two statements.
Statement I: In a resting neuron, the outer surface of the axonal membrane is negatively charged relative to the inner surface.
Statement II: The sodium-potassium pump moves three Na⁺ out of the cell for every two K⁺ it moves in.
In the light of the above statements, choose the correct answer.
Question 3
Unlabelled bacteriophages infect bacteria that had been grown in a medium containing radioactive sulphur. In the new phages released from these bacteria, where is the radioactivity found?
Question 4
A gene is ligated into the BamHI site of pBR322, which lies in its tetracycline resistance gene, and the plasmids are put into Escherichia coli. 200 colonies grow on a plate containing ampicillin. Each is transferred to a plate containing tetracycline, and 150 of them grow there. How many of the 200 colonies carry the recombinant plasmid?
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Are past NEET papers still useful?
Yes, for timing and question style. Check each question against the current syllabus, since topics have been added and removed over the years.