Life Processes Class 10 MCQ with Answers

Welcome to biology life processes class 10 MCQ online test. In this online test, you would find the single choice type questions along with assertion reason type questions. This test is strictly according to the class 10 science syllabus as proposed by CBSE and NCERT books.

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Life Processes Class 10 MCQ Online Test

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Your test contains multiple-choice questions with only one answer-type question. There are a total of 20 questions
This is a 20 min test. Please make sure you complete it in the stipulated time
You can finish this test any time using the 'Submit' button.

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1. Which is the correct sequence of body parts in the human alimentary canal?

Mouth → stomach → small intestine → large intestine → oesophagus

Mouth → oesophagus → stomach → small intestine → large intestine

Mouth → stomach → oesophagus → smallintestine → large intestine

Mouth → oesophagus → stomach → large intestine → small intestine

2. In which mode of nutrition an organism derives its food from the body of another living organism without killing it?

Saprotrophic nutrition

Parasitic nutrition

Holozoic nutrition

Autotrophic nutrition

3. 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:

hyla, rana, draco

whale, dolphin, turtle

labeo, chameleon, salamander

hippocampus, exocoetus, anabas

4. Oxygen released during photosynthesis comes from

water

Chlorophyll

carbon dioxide

glucose

5. Choose the form in which most of the plants absorb nitrogen from the atmosphere ?

proteins

nitrates and nitrites

atmospheric nitrogen

amino acids

6. Blood consist of what fluid medium?

Lymph

Platelets

Plasma

None of these

7. Which of these juices is secreted by pancreas?

Trypsin

Pepsin

Bile juice

both Trypsin and Pepsin

8. Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?

Starch breaking down into sugars

Proteins breaking down into amino acids

Absorption of vitamins

Fats breaking down into fatty acids and glycerol

9. Assertion: All proteins in our food are digested in small intestine only.
Reason: The protein-digesting enzymes are released onto small intestine.

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

Assertion is true but Reason is false

Assertion is false but Reason is true

Both Assertion and Reason are false

10. Name the pores in a leaf through which respiratory exchange of gases takes place.

Lenticels

Vacuoles

Xylem

Stomata

11. The exit of unabsorbed food material is regulated by

liver

anus

small intestine

anal sphincter

12. A blood vessel that pumps the blood from the heart to the entire body:

artery

capillary

Vein

Haemoglobin

13. Which of the following is incorrect statement:

organism grow with time

Organisms must repair and maintain their structure

The movement of molecules does not take place among cells

Energy is essential for life processes

14. Main site of photosynthesis

Leaf

Stem

Chloroplast

Guard cells

15. ASSERTION: In human beings, the respiratory pigment is haemoglobin.
REASON: It is a type of protein which has high-affinity carbon dioxide.

If both assertion and reason are CORRECT and the reason is the CORRECT explanation of the assertion.

If both assertion and reason are CORRECT, but the reason is NOT THE CORRECT explanation of the assertion.

If the assertion is CORRECT, but the reason is INCORRECT

If the assertion is INCORRECT, but the reason is CORRECT

If both assertion and reason are INCORRECT

16. The contraction and expansion movement of the walls of the food pipe is called

translocation

transpiration

peristaltic movement

digestion

17. Respiratory pigment in the human body is

Chlorophyll

Water

Blood

haemoglobin

18. Proteins after digestion are converted into

Carbohydrates

Small globules

Amino acids

starch

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

Pepsin

Cellulose

Amylase

Trypsin

20. ASSERTION: The purpose of making urine is to filter out undigested food from intestine.
REASON: Kidneys filter the waste and produce urine.

If both assertion and reason are CORRECT and the reason is the CORRECT explanation of the assertion.

If both assertion and reason are CORRECT, but the reason is NOT THE CORRECT explanation of the assertion.

If the assertion is CORRECT, but the reason is INCORRECT

If the assertion is INCORRECT, but the reason is CORRECT

If both assertion and reason are INCORRECT

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