Life Processes MCQ Questions for Class 10 Science Chapter 6 with Answers

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All questions answers in the last paragraph

MCQ Questions for Class 10 Science with Answers Biology

Q1. Blood vessel which carries oxygenated blood from lungs is:

(A) pulmonary vein
(B) pulmonary artery
(C) coronary artery
(D) superior venacava

Q2. Which region of the alimentary canal absorbs the digested food?

(A) Stomach
(B) Small intestine
(C) Large intestine
(D) Liver

Q3. Excess glucose is stored in our body in the form of:

(A) glycogen
(B) fat
(C) protein
(D) cholesterol.

Q4. When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of

(A) oxygen
(B) carbon dioxide
(C) nitrogen
(D) water vapour

Q5. Trachea do not collapse when there is not much air because they are:

(A) thick and muscular
(B) having cartilaginous rings
(C) have valves
(D) supported by larynx.

Q6. Woody plants carry gaseous exchange through

(A) root hair
(B) stem hair
(C) Lenticels
(D) epidermal cells.

Q7. In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?

(A) Pisces and amphibians
(B) Amphibians and reptiles
(C) Amphibians only
(D) Pisces only

Q8. The ultimate source of all metabolic energy on our earth is:

(A) green plants
(B) the sun
(C) O2
(D) O2 and H2O.

Q9. The movement of food in phloem is called:

(A) transpiration
(B) translocation
(C) respiration
(D) evaporation

Q10. In amoeba, food is digested in the:

(A) food vacuole
(B) mitochondria
(C) pseudopodia
(D) chloroplast

Q11. The autotrophic mode of nutrition requires:

(A) carbon dioxide and water
(B) chlorophyll
(C) sunlight
(D) all of the above

Q12. A few drops of iodine solution were added to rice water. The solution turned blue-black in color. This indicates that rice water contains

(A) complex proteins
(B) simple proteins
(C) fats
(D) starch

Q13. Which region of the alimentary canal absorbs the digested food?

(A) Stomach
(B) Small intestine
(C) Large intestine
(D) Liver

Q14. The site of photosynthesis in the cells of a leaf is

(A) chloroplast
(B) mitochondria
(C) cytoplasm
(D) protoplasm

Q15. Which is the first enzyme to mix with food i the digestive tract?

(A) Pepsin
(B) Cellulose
(C) Amylase
(D) Trypsin

Q16. Rate of photosynthesis is high in:

(A) orange light
(B) green light
(C) red light
(D) yellow light

Q17. Name a circulatory fluid in the human body other than blood.

(A) Platelets
(C) Lymph
(D) Plasma

Q18. Roots of the plants absorb water from the soil through the process of:

(A) diffusion
(B) transpiration
(C) osmosis
(D) None of these

Q19. Number of salivary glands found in man are:

(A) one pair
(B) two pairs
(C) three pairs
(D) five pairs

Q20. The extracellular fluid released from the capillaries is:

(A) serum
(B) plasma
(C) lymph
(D) mucus

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