Saturday 9 October 2021

CBSE Class 10 - Biology - Life Processes MCQs (#class10Biology)(#Class10Term1MCQs)(#class10Science)(#eduvictors)

CBSE Class 10 - Biology - Life Processes MCQs 

CBSE Class 10 - Biology - Life Processes MCQs (#class10Biology)(#Class10Term1MCQs)(#class10Science)(#eduvictors)

Q1: Which activity is basic to living beings?

(a) Reproduction

(b) Locomotion

(c) Molecular Movement

(d) Adaptation

Q2: Which of the following statement is not true about living beings?

(a) Reproduction is critical both at individual level as well as at species level for survival. 

(b) Life on the Earth depends on carbon based molecules

(c) The basic functions performed by living organisms to maintain their life on the Earth are called life processes.

(d) Oxidation of food takes place inside every cell of the body by a process called respiration.

Q3: Which of the following structures is involved in gaseous exchange in woody stem of a plant?

(a) Stomata 

(b) Lenticel 

(c) Hydathode 

(d) Epidermis

Q4: Carefully study the diagram of the human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and /or characteristic.

CBSE Class 10 - Biology - Life Processes MCQs (#class10Biology)(#Class10Term1MCQs)(#class10Science)(#eduvictors)

(a) (i) Trachea: It is supported by bony rings for conducting inspired air.

(b) (ii) Ribs: When we breathe out, ribs are lifted.

(c) (iii) Alveoli: Thin-walled sac like structures for exchange of gases.

(d) (iv) Diaphragm: It is pulled up when we breathe in.

Q5: To demonstrate that carbon dioxide is necessary for photosynthesis, following activity is performed. Take two destarched potted plants are place on glass slabs.  Both are covered with glass jars and are the edges are sealed. In the first jar, a chemical solution is placed in watch glass (as shown in figure) to absorb carbon-dioxide. Name the chemical used.

CBSE Class 10 - Biology - Life Processes MCQs (#class10Biology)(#Class10Term1MCQs)(#class10Science)(#eduvictors)

(a) Mg(OH)₂

(b) NaCl

(c) C₂H₅OH

(d) KOH

Q6: During respiration exchange of gases take place in

(a) trachea and larynx 

(b) alveoli of lungs 

(c) alveoli and throat 

(d) throat and larynx

Q7: The leaves of a plant prepare food X by photosynthesis. Food X then gets converted into food Y which is stored in the leaves. What are X and Y?

(a) X: Glucose, Y: Glycogen

(b) X: Starch, Y: Glucose

(c) X: Glucose, Y: Starch

(d) X: Glycogen, Y: Starch

Q8: Stomatal openings get closed when guard cells are?

(a) flaccid

(b) turgid

(c) doing transpiration

(d) doing photosynthesis

Q9: Digestion of food starts at?

(a) Stomach 

(b) Mouth cavity

(c) Small intestine

(d) Large intestine

Q10: In which part of the alimentary canal food is finally digested?

(a) Stomach 

(b) Mouth cavity

(c) Small intestine

(d) Large intestine

Q11: The air consist of 78% Nitrogen . Choose the forms in which most plants absorb nitrogen:

1. Proteins

2. Nitrates and nitrites

3. Urea

4. Atmospheric nitrogen Choose the correct option.

(a) 1 and 2 

(b) 2 and 3

(c) 3 and 4

(d) 1 and 4

Q12: Only two of the following Statements accurately describe what happens in the mouth.

1. Amylase breaks down large starch molecules into smaller maltose molecules.

2. Chewing increases the surface area of food for digestion.

3. Saliva emulsifies fats into smaller droplets.

4. Teeth breakup large insoluble molecules into smaller soluble molecules which statements are correct? 

(a) 1 and 2

(b) 2 and 3 

(c) 3 and 4 

(d) 1 and 4

Q13: Name a circulatory fluid in the human body other than blood.

(a) Platelets 

(b) RBC

(c) Plasma

(d) Lymph

Q14: Normal blood pressure (systolic/diastolic) is

(a) 120/80 mm of Hg 

(b) 160/80 mm of Hg 

(c) 120/60 mm of Hg 

(d) 180/80 mm of Hg

Q15: What are the end products of anaerobic respiration by yeast cells?

(a) O2 and ethyl alcohol

(b) CO2 and lactic acid

(c) O2 and lactic acid

(d) CO2 and ethyl alcohol

Q16: One cell-thick vessels are called

(a) Arteries 

(b) Veins

(c) Capillaries

(d) Aorta

Q17: The vein which brings oxygenated blood from the lungs into the heart is known as

(a) pulmonary vein 

(b) hepatic vein

(c) vena cava 

(d) pulmonary artery

Q18: The excretory unit of the human excretory system is known as

(a) nephridia 

(b) neuron 

(c) nephron 

(d) kidneys

Q19: Which vessel brings urea-rich blood to kidneys?

(a) Renal Artery

(b) Renal Vein

(c) Hepatic Artery

(d) Vena Cava

Q20: In the excretory system of human beings, some substances in the initial filtrate such as glucose, amino acids, salts and water are selectively reabsorbed in 

(a) Urethra 

(b) Nephron 

(c) Ureter

(d) Urinary Bladder


1: (c) Molecular Movement

2: (a) Reproduction is critical both at individual level as well as at species level for survival. 

3: (b) Lenticel 

4: (c) (iii) Alveoli: Thin-walled sac like structures for exchange of gases.

5: (d) KOH

6: (b) alveoli of lungs 

7: (c) X: Glucose, Y: Starch

8: (b) turgid

9: (b) Mouth cavity

10: (c) Small intestine

11: (b) 2 and 3

12: (a) 1 and 2

13: (d) Lymph

14: (a) 120/80 mm of Hg 

15: (d) CO2 and ethyl alcohol

16: (c) Capillaries

17: (a) pulmonary vein 

18: (c) nephron 

19: (a) Renal Artery

20: (b) Nephron 

👉See Also:

Ch 6 - Life Processes (Q & A) 
Ch 6 - Life Processes (Nutrition) - Q & A
Ch 6 - Life Processes - Photosynthesis (Q & A) 
Ch6 - Life Processes (MCQs) 
Ch6 - Life Processes (Gist on Excretory System)
Ch 6 - Digestive Organs & Functions
Ch 6 - Life Processes (Assignment Q & A-1)
Ch 6 -Life Processes: 51 Questions You must Revise
Ch6 - Life Processes - Breathing - Pathway To Air
Ch 6 - Life Processes- TRANSPORTATION & EXCRETION  - Assignment Sheet
Ch 6 - Arteries vs Veins (Important Differences)
Ch 6 - Five Digestive Juices
Ch 6 - Human Nutrition (VSQA - Worksheet)
Ch 6 - Life Processes - Assertion Reasoning Type Questions 
Ch 6 - Life Processes (Worksheet)
Ch 6 - Activity 6.1 Related Questions and Answers
Ch 6 - Life Processes (Worksheet-2)

Ch 1 - Chemical Reactions & Equations (MCQs)

Ch2 - Acids, Bases and Salts (MCQs)

Ch 3 - Metals and Non-Metals (MCQs) 

Ch 10 - Light - MCQ 

Ch 11 - Human Eye and The Colourful World (MCQs)

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