Class 10 Science MCQs Chapter 6 Life Process:-
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| Life Processes MCQs |
Hello guys, welcome to your own blog 'Pareeksha Time'. In this article, you will read CBSE Class 10 Biology MCQs of Chapter 6. You will read Life Processes MCQs for Term-1 Board Exams 2021-22.
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Life Processes MCQs| MCQ Questions for Class 10 Science Life Processes with Answers:-
1. Which of the following statements about autotrophs is incorrect ?
(a) Hetrotrophs make their food
(b) Heterotrophs utilize solar energy to make food
(c) Heterotrophs do not make their own food
(d) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates
Answer: (c) Heterotrophs do not make their own food
2. Which of the following are energy foods?
(a) Carbohydrates and Fats
(b) Proteins and Mineral salts
(c) Vitamins and Minerals
(d) Water and Roughage
Answer: (a) Carbohydrates and Fats
3. Proteins after digestion are converted into:
(a) Carbohydrates
(b) Small globules
(c) Amino acids
(d) Starch
Answer: (c) Amino acids
4. In which mode of nutrition an organism de-rives its food from the body of another living organism without killing it?
(a) Saprotrophic nutrition
(b) Parasitic nutrition
(c) Holozoic nutrition
(d) Autotrophic nutrition
Answer: (b) Parasitic nutrition
5. The chlorophyll in photosynthesis is used for
(a) Absorbing light
(b) Breaking down water molecule
(c) No function
(d) Reduction of CO2
Answer: (a) Absorbing light
6. The enzymes pepsin and trypsin are secreted respectively by
(a) Stomach and Pancreas
(b) Salivary gland and Stomach
(c) Liver and Pancreas
(d) Liver and Salivary gland
Answer: (a) Stomach and Pancreas
7. A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
(a) Complex Proteins
(b) Simple Proteins
(c) Carbohydrate
(d) Starch
Answer: (d) Starch
8. In which group of the organisms the food material is broken down outside the body ?
(a) Mushroom, Green plants, Amoeba
(b) Yeast, Mushroom, Bread mould
(c) Paramecium, Amoeba, Cuscuta
(d) Cuscuta, Lice, Tapeworm
Answer: (b) Yeast, Mushroom, Bread mould
9. The site of photosynthesis in the cells of a leaf is
(a) Chloroplast
(b) Mitochondria
(c) Cytoplasm
(d) Protoplasm
Answer: (a) Chloroplast
10. Which of these is the simplest form of food ?
(a) Rice
(b) Wheat
(c) Protein
(d) Glucose
Answer: (d) Glucose
11. Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?
(a) Starch breaking down into sugars.
(b) Proteins breaking down into amino acids.
(c) Absorption of vitamins.
(d) Fats breaking down into fatty acids and glycerol.
Answer: (a) Starch breaking down into sugars.
12. Which is the correct sequence :–
(a) Mouth → Stomach → Small intestine → Esophagus → Large intestine
(b) Mouth → Esophagus → Stomach → Large intestine → Small intestine
(c) Mouth → Stomach → Esophagus → Small intestine → Large intestine
(d) Mouth → Esophagus → Stomach → Small intestine → Large intestine
Answer: (d) Mouth → Esophagus → Stomach → Small intestine → Large intestine
13. Which of the following help in protecting the inner lining of the stomach from the harmful effect of hydrochloric acid?
(a) Mucus
(b) Pepsin
(c) Trypsin
(d) Bile
Answer: (a) Mucus
14. The respiratory pigment in human beings is:
(a) Carotene
(b) Chlorophyll
(c) Haemoglobin
(d) Mitochondria
Answer: (c) Haemoglobin
15. Choose the correct path of urine in our body:
(a) Kidney → Ureter → Urethra → Urinary bladder
(b) Kidney → Urinary bladder → Urethra → Ureter
(c) Kidney → Ureters → Urinary bladder → Urethra
(d) Urinary bladder → Kidney → Ureter → Urethra
Answer: (c) Kidney → Ureters → Urinary bladder → Urethra
16. The vein which brings clean blood from the lungs into the heart is known as:
(a) Pulmonary vein
(b) Hepatic vein
(c) Superior vena cava
(d) Pulmonary artery
Answer: (a) Pulmonary vein
17. What is the approximate length of an alimentary canal?
(a) 3m
(b) 4m
(c) 5m
(d) 4.5-5 m
Answer: (d) 4.5-5 m
18. Single circulation, i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by which of the following:
(a) Hyla, Rana, Draco
(b) Whale, Dolphin, Turtle
(c) Labeo, Chameleon, Salamander
(d) Hippocampus, Exocoetus, Anabas
Answer: (d) Hippocampus, Exocoetus, Anabas
19. What prevents backflow of blood inside the heart during contraction?
(a) Valves in heart
(b) Thick muscular walls of ventricles
(c) Thin walls of atria
(d) All of the above
Answer: (a) Valves in heart
20. During deficiency of oxygen in tissues of humans, pyruvic acid is converted into lactic acid in
(a) Cytoplasm
(b) Chloroplast
(c) Mitochondria
(d) Golgi body
Answer: (a) Cytoplasm
21. Which part of nephron allows the selective reabsorption of useful substances like glucose, amino acids, salts and water into the blood capillaries?
(a) Tubule
(b) Glomerulus
(c) Bowman’s capsule
(d) Ureter
Answer: (a) Tubule
22. The movement of food in phloem is called:
(a) Transpiration
(b) Translocation
(c) Respiration
(d) Evaporation
Answer: (b) Translocation
23. What are the products obtained by anaerobic respiration in plants?
(a) Lactic acid + Energy
(b) Carbon dioxide + Water + Energy
(c) Ethanol + Carbon dioxide + Energy
(d) Pyruvate
Answer: (c) Ethanol + Carbon dioxide + Energy
24. The process of diffusion of solvent particles from the region of less solute concentration to a region of high solute concentration through semi-permeable membrane is known as
(a) Diffusion
(b) Osmosis
(c) Translocation
(d) Transpiration
Answer: (b) Osmosis
25. Where is the dirty blood in our body filtered?
(a) Heart
(b) Lungs
(c) Ureter
(d) Kidneys
Answer: (d) Kidneys
26. Which of the following statement (s) is (are) true about heart?
(a) Left atrium receives oxygenated blood from different parts of body while right atrium
(b) receives deoxygenated blood from lungs
(c) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs
(d) Left atrium transfers oxygenated blood to the right ventricle which sends it to different body parts Right atrium receives oxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body.
Answer: (a) Left atrium receives oxygenated blood from different parts of body while right atrium
27. During respiration exchange of gases takes place in
(a) Trachea and larynx
(b) Alveoli of lungs
(c) Alveoli and throat
(d) Throat and larynx
Answer: (b) Alveoli of lungs
28. The Pancreas pours their secretion into
(a) Small intestine
(b) Large intestine
(c) Stomach
(d) Duodenum
Answer: (d) Duodenum
Also Read: [Term 1] 25+ Human Eye and Colourful World MCQs 2021-22
So guys here comes end. In this article, I shared 25+ Life Processes MCQs of CBSE Class 10 Biology MCQs 2021-22.
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