Which of the following organelles have their own DNA and ribosomes ?

Endoplasmic reticulum and Golgi bodies

Endoplasmic reticulum and cytoskeleton

Identify the functions that are controlled by the hind brain of human being

Involuntary actions such as blood pressure, salivation vomiting etc.

Controlling the regions receiving sensory impulses from receptors

Controlling the movement of voluntary muscles

Sensation of hunger or being full

Biology — NDA Previous Year Questions

96 solved PYQs · 2021–2025 · General Science

Solved PYQs: 96
Years covered: 2021–2025
Avg / year: ~19
Subject: General Science

How many NDA questions come from Biology?

Biology has contributed 96 questions to National Defence Academy Examination papers between 2021 and 2025 — an average of about 19 questions a year. That count is measured from EByAi’s bank of 15,695 NDA questions, not estimated from a syllabus. Every one of the 96 questions carries a written, step-by-step solution, and each is tagged to Biology within General Science, so you can drill this chapter across every year at once instead of hunting through paper PDFs. Practising a chapter’s full PYQ history is the fastest way to learn the patterns examiners reuse.

Sample Biology questions from real NDA papers

These are 5 real questions from the bank — exactly as asked, with the answer one tap away. All 96 Biology questions (with full written solutions) are available in practice.

Question 1 · NDA 2025
Initial discovery of antibiotic penicillin was done by
1. (A) $Francis Crick$
2. (B) $Maurice Wilkins$
3. (C) $Charles Darwin$
4. (D) $Alexander Fleming$
Show answerAnswer
$Answer: (D) Alexander Fleming$
Question 2 · NDA 2025
Which is the correct base pairing found in a normal DNA molecule?
1. (A) $Adenine pairs with Thymine$
2. (B) $Adenine pairs with Guanine$
3. (C) $Adenine pairs with Cytosine$
4. (D) $Thymine pairs with Guanine$
Show answerAnswer
$Answer: (A) Adenine pairs with Thymine$
Question 3 · NDA 2025
Which of the following organelles have their own DNA and ribosomes ?
1. (A) $Endoplasmic reticulum and Golgi bodies$
2. (B) $Mitochondria and chloroplast$
3. (C) $Endoplasmic reticulum and cytoskeleton$
4. (D) $Cell wall and nucleolus$
Show answerAnswer
$Answer: (B) Mitochondria and chloroplast$
Question 4 · NDA 2025
Clotting of blood involves which one among the following clotting proteins?
1. (A) $Pathogen$
2. (B) $Fibrinogen$
3. (C) $Macrophage$
4. (D) $Phagocytes$
Show answerAnswer
$Answer: (B) Fibrinogen$
Question 5 · NDA 2025
Identify the functions that are controlled by the hind brain of human being
1. (A) $Involuntary actions such as blood pressure, salivation vomiting etc.$
2. (B) $Controlling the regions receiving sensory impulses from receptors$
3. (C) $Controlling the movement of voluntary muscles$
4. (D) $Sensation of hunger or being full$
Show answerAnswer
$Answer: (A) Involuntary actions such as blood pressure, salivation vomiting etc.$

Biology questions by year

Year	Questions	Share of chapter questions
2025	18
2024	22
2023	23
2022	22
2021	11

Practise these 96 questions with solutions

Free to start — 25 past-year questions a day with full written solutions, no card needed.

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FAQs

How many NDA questions have been asked from Biology?

EByAi's bank holds 96 real NDA questions from Biology, asked between 2021 and 2025 — about 19 per year on average. Every count is measured from actual papers, not estimated.

Is Biology important for NDA?

96 questions over 5 papers make Biology a moderate-weightage chapter in NDA General Science. The year-wise table above shows exactly how often it appears.

Can I solve Biology PYQs online for free?

Yes. EByAi lets you solve NDA past-year questions in the browser with written solutions — free daily practice, no card needed.

More NDA General Science chapters

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