AP 10th Class Life Processes (Biology) Important Questions 2025

Here is a list of important questions for the Life Processes chapter in the biology subject for AP SSC Board Exams 2025, as given by AP SCERT. These questions are curated to help 10th-class students focus on key topics and concepts:

Important 8 Marks Questions

1. How do you demonstrate that carbon dioxide is necessary for photosynthesis?
2. Write the experiment to show that chlorophyll is necessary for photosynthesis.
3. Observe the diagram and answer the following questions.
i) What is the aim of this experiment?
ii) Why do we keep KOH in one of the bell jars?
iii) What is the chemical used to test the presence of starch?
iv) What is the purpose of keeping the plants in a dark room before the experiment?
4. Write the activity you did in your laboratory to show the effect of saliva on starch.
5. Describe an experiment to demonstrate that sunlight is essential for photosynthesis.
6. Write the experiment of the fermentation process in yeast.

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AP & TS 10^th Class - 2025 Model Papers, Blue Print and Chapter-wise Imp. Questions...

Andhra Pradesh

• English Medium
• Telugu Medium

Telangana

• English Medium
• Telugu Medium

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Important 4 Marks Questions

1. What are the differences between autotrophic and heterotrophic nutrition?
2. How are fats digested in our bodies? Where does this process take place?
3. Write the differences between arteries and veins.
4. Write the differences between blood and lymph.
5. Write the differences between single circulation and double circulation.
6. Observe the table and answer the following questions.

Sl. No	Digestive Glands	Digestive Juice	Enzymes
1	Salivary glands	Saliva	Salivary amylase
2	Gastric glands	Gastric juice	Pepsin
3	Liver	Bile juice	No enzymes
4	Pancreas	Pancreatic juice	Trypsin

i) Name the enzyme secreted from gastric glands.
ii) What enzyme is secreted by the pancreas?
iii) Name the gland that releases digestive juice with no enzyme?
iv) What are the secretions of salivary glands?
7. Fill the blanks in the given table.

Sl. No.	Secretions / Enzyme	Acts On
1	Salivary amylase	a. Starch
2	b. Pepsin	Proteins
3	Bile juice	c. Fats (Emulsification)
4	d. Lipase	Fats

8. Read the paragraph and answer the questions.
Dental caries or tooth decay causes gradual softening of enamel and dentine. It begins when bacteria acting on sugars produce acids that softens or demineralizes the enamel. Masses of bacterial cells together with food particles stick to the teeth to form dental plaque. Saliva cannot reach the tooth surface to neutralise the acid as plaque covers the teeth. Brushing the teeth after eating removes the plaque before the bacteria produce acids. If untreated, micro organisms may invade the pulp, causing inflammation and infection.
i) What substance softens the enamel?
ii) What precautions should be taken to avoid dental caries?
iii) What can happen if brushing is not done after eating?
iv) How does dental plaque form?

9. Write the differences between aerobic and anaerobic respiration.
10. What are the differences between the transport of materials in the xylem and phloem?
11. Observe the flow chart and answer the following questions.
i) In which organelles does pyruvate break down into carbon dioxide and water?
ii) Where does glucose break down into pyruvate?
iii) What are the end products of aerobic respiration?
iv) In which cells lactic acid is formed by the process of anaerobic respiration?

12. Read the paragraph and answer the following questions.
Lung cancer is one of common causes of deaths in the world. The upper part of respiratory tract is provided with small hair-like structures called cilia. These cilia help to  remove germs,dust and other harmful particles from inhaled air. Smoking destroys these hair due to which germs, dust, smoke and other harmful chemicals enter lungs and cause infection, cough and even lung cancer.
i) What is the common disease of the lungs?
ii) What are the hair-like structures in the respiratory tract?
iii) How do the cilia help in the respiratory tract?
iv) What substances cause lung cancer?

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13. Read the paragraph carefully and answer the following questions.
Blood pressure is measured with an instrument called sphygmomanometer. High blood pressure is also called hypertension and is caused by the constriction of arterioles, which results in increased resistance to blood flow. It can lead to the rupture of an artery and internal bleeding. The force that blood exerts against the wall of a vessel is called blood pressure. This pressure is much greater in arteries than in veins. The pressure of blood inside the artery during ventricular systole (contraction) is called systolic pressure and pressure in artery during ventricular diastole (relaxation) is called diastolic pressure. The normal systolic pressure is about 120 mm of Hg and diastolic pressure is 80 mm of Hg.
i) Which blood vessels have more pressure?
ii) What is normal blood pressure in humans?
iii) Name the instrument that measures the blood pressure.
iv) What is the cause of hypertension?

14. Compare the functioning of alveoli in the lungs and nephrons in the kidney concerning
their structure and functioning.
15. Read the paragraph carefully and answer the following questions.
Kidneys are vital organs for survival. Several factors like infections, injury or restricted blood flow to kidneys reduce the activity of kidneys. This leads to accumulation of poisonous wastes in the body, which can even lead to death. In case of kidney failure, an artificial kidney can be used. An artificial kidney is a device to remove  nitrogenous waste products from the blood through dialysis.
i) What are the factors that reduce the activity of kidneys?
ii) What is an artificial kidney?
iii) Name the process involved in artificial kidneys.
iv) What happens when the functioning of kidneys are reduced?
16. Describe briefly the structure of human excretory system.

Important 2 Marks Questions

1. What happens if acid is not secreted in the stomach?
2. If you meet a gastroenterologist, what questions will you ask about indigestion, good food habits, and malnutrition diseases?
3. What questions will you ask about respiratory diseases, if you have a chance to meet a pulmonologist?
4. what questions will you ask about kidney diseases and the maintenance of healthy kidneys if you have a chance to meet a nephrologist?
5. What questions will you ask about cardiovascular diseases, if you have a chance to meet a cardiologist?
6. What will happen if the gastric glands do not secrete mucus?
7. ‘Bile juice does not have any digestive enzyme but still plays a significant role in the process of digestion’ How do you support this statement?
8. Why do muscle cramps in the legs occur during sudden activity?
9. Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds?
10. ‘The presence of oxygen affects the fate of pyruvate’. How can you support this statement?
11. What questions will you ask your teacher about the evil effects of tobacco consumption?
12. What will happen if platelets are absent in our body?
13. What questions do you ask your teacher to know about blood pressure?
14. What would be the consequences of deficiency of hemoglobin in our bodies?
15. What ways you can suggest to promote awareness about kidney failure?
16. If a person’s kidneys are not functioning properly, what might happen to their body?
17. What happens if the system of blood vessels develops a leak?
18. What would happen if the heart’s valves were damaged?
19. What would happen to a plant if its stomata were permanently closed?
20. Why is it necessary to make the food alkaline in the intestine?

Important 1 Mark Questions

1. Which chemical reactions take place in our body to break down the food materials?
2. How many modes of nutrition are there? What are they?
3. Name the raw materials required for autotrophs.
4. Name the cells that regulate the opening and closing of stomata.
5. Give examples of organisms that digest the food material outside the body.
6. Give an example of parasitic nutrition.
7. In which parts of the alimentary canal, proteins are digested?
8. What is the role of the tongue in food processing in the mouth?
9. What are peristaltic movements?
10. Fill in the blank.
…......……. Protects the inner lining of the stomach from the action of hydrochloric acid.
11. Write the balanced chemical equation of photosynthesis.
12. What are the factors and products of photosynthesis?
13. The site of photosynthesis in the leaf is A and contains a green pigment B. What are A and B?
14. How is air filtered as it enters the human body?
15. How do rings of cartilage in the trachea help in respiration?
16. What are blood capillaries? What is their function?
17. What are the fluids present in our body that help in transportation?
18. Fill in the blank
Translocation takes place utilizing energy in the form of …………………………..
19. Fill in the blank
………………………………. is involved in the transportation of food in plants.
20. Observe the flow chart and fill in the given blank.
Right Atrium-> Right Ventricle -> Lungs
Which type of blood flows through this way.
21. The CO2-rich blood gets pumped to which part of the body and for what?
22. Why do ventricles have thicker muscular walls than atria?
23. What is called transpiration? Which parts of the plants are responsible for the process?
24. What are the main parts of the human excretory system?
25. Which process is involved in the removal of wastes in unicellular organisms?
26. What is the basic filtration unit in the kidneys?
27. Fill in the blank with a suitable answer.
Kidney -> ? -> Urinary bladder -> Urethra

28. Name the substances selectively reabsorbed from the initial filtrate.
29. Observe the paragraph and answer the following questions.
ATP : ATP is the energy currency for most cellular processes. The energy released during the process of respiration is used to make an ATP molecule from ADP and  inorganic phosphate.
A) What is the energy currency?
B) In which life processes the ADP converts into ATP?
30. Observe the table and answer the following questions.

Waste Materials	Eliminating Process

Excess of water in plants

Transpiration

Urea and uric acid

Excretion

i) Name the Nitrogenous wastes removed by the excretion process.
ii) By which process the excess of water in plants removed?
31. What will happen if small intestine is shorter like food pipe?
32. What will happen if our respiratory tract is not moist?

Tips for Exam Preparation:

• Focus on diagrams as they carry significant weight in Biology.
• Practice writing clear, concise answers.
• Refer to past years’ question papers for a better understanding of the exam pattern.
• Revise regularly to strengthen key concepts.

Published date : 24 Jan 2025 03:45PM