Human Organ Systems

Samacheer Book Back Questions And Answers For Science Standard 6 Term 2 “Human Organ Systems“

I. Choose the correct answer:
1. The circulatory system transports these throughout the body
(a) Oxygen
(b) Nutrient
(c) Hormones
(d) All of these

2. Main organ of respiration in human body is
(a) Stomach
(b) Spleen
(c) Heart
(d) Lungs

3. Breakdown of food into smaller molecules in our body is known as
(a) Muscle contraction
(b) Respiration
(c) Digestion
(d) Excretion

II. Fill in the Blanks:
1. A group of organs together make up an _____ system.
2. The part of the skeleton that protects the brain is _____.
3. The process by which the body removes waste is _____
4. The _____ is the largest sense organ in our body.
5. The endocrine glands produce chemical substances called _____.

Answers:
1. Organ
2. Skull
3. Excretion
4. Skin
5. Hormones

III. True or False. If False, give the correct answer:
1. Blood is produced in the bone marrow.
2. All the waste products of the body are excreted through the circulatory system.
3. The other name of the food pipe is an alimentary canal.
4. Thin tube-like structures which are the component of the circulatory system are called blood vessels.
5. The brain, the spinal cord, and nerves form the nervous system.

Answers:
1. False (RBC is produced in the bone marrow)
2. False (All the waste products are transported through the excretory system)
3. False (The other name of the digestive tract is an alimentary canal)
4. True
5. True

IV. Match the following:
1. Ear                            A. Cardiac muscle
2. Skeletal System        B. Flat muscle
3. Diaphragm               C. Sound
4. Heart                        D. Air sacs
5. Lungs                        E. Protection of internal organs

Answers:
1. C
2. E
3. B
4. A
5. D

V. Arrange in the correct sequence:
1. Stomach → Large intestine → Oesophagus → Pharynx → Mouth → Small Intestine → Rectum → Anus
2. Urethra → Ureter → Urinary Bladder → Kidney

Answers:
1. Mouth → Pharynx → Oesophagus → Stomach → Small intestine → Large intestine → Rectum
2. Kidney → Ureter → Urinary bladder → Urethra

VI. Analogy:
1. Arteries: Carry blood from the heart:: _____: Carry blood to the heart.
2. Lungs: Respiratory system:: _____ : Circulatory system.
3. Enzymes: Digestive glands:: _____ : Endocrine glands

Answers:
1. Veins
2. Heart
3. Hormones

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