9th Class Biology Chapter Wise Test Chapter 8

9th Class Biology Chapter Wise Test Chapter 8 covers the complete chapter of Biology, BIOENERGETICS, in a 36-mark bilingual paper with every question given in both English and Urdu. It follows the board pattern: ten MCQs with a bubble sheet, ten short questions of which any eight are attempted, and two detailed questions. An answer key for the MCQs is included at the end.

What Chapter 8 Covers

This test paper is set on the whole of Chapter 8, Bioenergetics, rather than a single exercise, so it is a fair check of whether the chapter is actually finished. The questions are drawn from across these topics:

• What bioenergetics means, and the central role of ATP as the energy currency of the cell.
• Photosynthesis — the overall equation, the raw materials and the products.
• Chlorophyll and the chloroplast, and why photosynthesis happens mainly in the leaf.
• The light-dependent and light-independent reactions, and where in the chloroplast each takes place.
• The limiting factors of photosynthesis — light intensity, carbon dioxide concentration and temperature.
• Respiration — aerobic and anaerobic, the overall equations, and the different products in muscle and in yeast.
• A direct comparison of photosynthesis and respiration in terms of raw materials, products, energy and site.

Revise These Before You Attempt It

Most marks in this chapter are lost on the same handful of points. Read through these once before you start:

• Photosynthesis: carbon dioxide and water, in the presence of light and chlorophyll, give glucose and oxygen.
• Aerobic respiration: glucose and oxygen give carbon dioxide, water and a large amount of energy.
• Anaerobic respiration in muscle produces lactic acid; in yeast it produces ethanol and carbon dioxide.
• The light-dependent reactions take place in the grana, and the light-independent reactions in the stroma.
• Aerobic respiration releases far more energy per glucose molecule than anaerobic respiration.
• Photosynthesis stores energy and respiration releases it, which is why the two equations look like opposites.

How This Test Paper Is Built

The paper follows the board pattern for a chapter test rather than inventing its own, so sitting it is useful practice for the real thing:

• 36 marks in total, enough for a full class test.
• Ten multiple-choice questions with a bubble sheet to fill, exactly as in the board objective paper.
• Ten short questions, of which you attempt any eight.
• Two detailed questions carrying the longer written answers.
• Bilingual throughout — every question is printed in English and in Urdu, so both mediums use the same file.
• An MCQ answer key is included at the end of the paper.

Mistakes Students Make in This Chapter

When you mark your paper, check whether any of your lost marks came from these:

• Writing the photosynthesis equation without light and chlorophyll above the arrow.
• Giving lactic acid as the product of anaerobic respiration in yeast.
• Saying plants respire only at night — they respire all the time.
• Placing the light-independent reactions in the grana.

After You Finish

Mark the objective section against the key at the end of the paper first, then mark the written sections against your textbook. Write down the topic behind every question you got wrong rather than just the question number, because it is the topic you need to revise, not the single question. If you want the same chapter marked for you automatically, take the Chapter 8 online test linked below: it shows the correct option and an explanation under every question the moment you submit, which is the quickest way to find out whether the gap has actually closed.

Frequently Asked Questions

What is the equation for photosynthesis?

Carbon dioxide plus water, in the presence of light energy and chlorophyll, produces glucose and oxygen. The light and chlorophyll are written above the arrow because they are required but not consumed as raw materials.

Do plants respire at night only?

No. Plants respire continuously, day and night. During the day photosynthesis usually happens faster than respiration, so the plant appears to be taking in carbon dioxide and giving out oxygen overall.

Is this test paper free?

Yes. The PDF is free to download and print, there is no sign-up, and the MCQ answer key is included in the file.

Is it available in Urdu medium?

Yes. Every question in the paper is printed in English and in Urdu, so Urdu medium and English medium students download exactly the same file.

Related Class 9 Biology Resources

Take the Chapter 8 online test for 25 self-marking MCQs on Bioenergetics with an explanation for every answer. Carry on with Chapter 7 test paper (Enzymes). When several chapters feel solid, sit a full paper from the 25 Class 9 Biology guess papers, each a complete 60-mark bilingual paper. Everything for the subject is collected on the Class 9 Biology page, and you can browse all Class 9 Biology test papers or every Class 9 Biology online test.