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Life Process

The document consists of multiple choice, short answer, long answer, and case study questions related to biology topics such as respiration, digestion, and photosynthesis. It includes questions on anaerobic respiration in yeast, the role of enzymes in digestion, and the structure of the nephron. Additionally, it features a case study on photosynthesis and its experimental observations.

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azraaa.charniyaa19
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13 views3 pages

Life Process

The document consists of multiple choice, short answer, long answer, and case study questions related to biology topics such as respiration, digestion, and photosynthesis. It includes questions on anaerobic respiration in yeast, the role of enzymes in digestion, and the structure of the nephron. Additionally, it features a case study on photosynthesis and its experimental observations.

Uploaded by

azraaa.charniyaa19
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Section A – Multiple Choice Questions (1 mark each)

[1 × 4 = 4 marks]

Which of the following is a product of anaerobic respiration in yeast?

a) Oxygen

b) Alcohol

c) Lactic acid

d) Glucose

The enzyme present in saliva that helps in digestion is:

a) Pepsin

b) Trypsin

c) Amylase

d) Lipase

Which part of nephron is responsible for filtration of blood?

a) Loop of Henle

b) Tubule

c) Glomerulus

d) Collecting duct

Which blood vessel carries oxygenated blood from lungs to heart?

a) Pulmonary artery

b) Pulmonary vein

c) Aorta

d) Vena cava
Section B – Short Answer Questions (2 marks each)

[2 × 3 = 6 marks]

Write two differences between autotrophic and heterotrophic modes of nutrition.

Why is the small intestine in herbivores longer than in carnivores?

What is the role of diaphragm in the process of respiration?

Section C – Long Answer Questions (3 marks each)

[3 × 2 = 6 marks]

Describe the process of digestion of food in the human mouth.

(Include role of teeth, saliva, and enzyme)

Draw a labelled diagram of human excretory system. (OR)

Explain the process of urine formation in brief.

Section D – Case Study Question (4 marks)

Case Study:

A group of students performed an experiment to observe photosynthesis in a plant. They used a


potted plant that had been kept in the dark for 2 days. One leaf was covered with black paper on
both sides, and the plant was then kept in sunlight. After a few hours, they performed the iodine
test.

Answer the following questions:

a) Why was the plant kept in the dark for 2 days?


b) What is the role of iodine solution in this experiment?

c) What result will be observed on the leaf after the iodine test?

d) Write the balanced chemical equation for photosynthesis.

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