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Biology MCQs & Past Papers

Biology MCQs here cover cell, plants, animals and microorganisms at general-science depth. Use them to close gaps that the human-body topic does not already cover.

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Biology MCQs with answers

10 questions on this page, with a one-liner under each answer. Hide answers to attempt; questions you already answered stay revealed. This is a sample of 30 Biology MCQs. The full Everyday Science bank is on the chapter pages, 10 questions at a time.

Answers and one-liners are hidden. Tap an option to check that question, or show all. Questions from previously asked papers carry a Past Paper MCQ badge.

1.
Past Paper MCQ
The most important stimulus for tea leaves is _____?
Correct Answer: A. Caffeine
One-liner
The most important stimulus in tea leaves is caffeine, which acts as a natural stimulant and is responsible for tea's alertness-inducing effects.
2.
Past Paper MCQ
Photosynthesis takes place faster in?
Correct Answer: A. White light
One-liner
Photosynthesis takes place faster in white light because it contains all wavelengths of the visible spectrum, providing maximum energy for the process.
3.
Past Paper MCQ
What gas is released by plants during the process of photosynthesis?
Correct Answer: B. Oxygen
One-liner
Plants release oxygen gas as a byproduct during the process of photosynthesis.
4.
Past Paper MCQ
In which color of light does photosynthesis in plants occur at the fastest rate?
Correct Answer: C. White light
One-liner
Photosynthesis in plants occurs at the fastest rate under white light because it contains all wavelengths of the visible spectrum.
5.
Past Paper MCQ
The original source of energy for biomass is _______?
Correct Answer: A. Sun
One-liner
The original source of energy for biomass is the Sun.
6.
Past Paper MCQ
Which two substances are produced by plants during photosynthesis?
Correct Answer: A. Sugar and starch
One-liner
Plants produce sugar and starch during photosynthesis.
7.
Past Paper MCQ
At night, plants intake
Correct Answer: A. Oxygen
One-liner
At night, plants intake oxygen because photosynthesis stops in the absence of sunlight and respiration continues.
8.
Past Paper MCQ
The absorption of wavelength light by a leaf is determined by?
Correct Answer: A. Spectrophotometer
One-liner
The absorption of wavelength light by a leaf is determined by a Spectrophotometer.
9.
Past Paper MCQ
Carbohydrates are stored in Plants and animals in the following respective form
Correct Answer: A. Starch and glycogen
One-liner
Carbohydrates are stored in plants as starch and in animals as glycogen.
10.
Past Paper MCQ
CO₂ fixation in chloroplast occurs in the:
Correct Answer: A. Stroma
One-liner
CO₂ fixation in the chloroplast occurs in the stroma, the fluid-filled matrix where the Calvin cycle takes place.

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Biology MCQs — common questions

Are these Biology MCQs with answers?

Yes. Each question on this page can be attempted here, with the correct option and a one-liner. This URL is a sample of 30 Biology MCQs across 3 pages. The rest of the Everyday Science questions are on the chapter pages, 10 MCQs per page.

Are Biology MCQs asked in FPSC, PPSC, NTS and all One Paper Exams?

Yes. Biology is part of the Everyday Science portion of most Pakistani one-paper job tests. Weighting still depends on the advertisement — use the official syllabus for your post.

Are these past paper Biology MCQs?

Where a question came from a previously asked paper, it carries a Past Paper MCQ badge. The rest are general practice from the same topic. The study app lets you drill past papers on their own.

How should I practise Biology MCQs?

Hide answers and attempt the samples on this page first. Then open Everyday Science in the study app and drill this area until your correction rate rises. Mix a full paper only after the topic is stable.

Biology MCQs & Past Papers

Biology MCQs with answers

Biology MCQs — common questions

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