concept 1 lesson 4 grade 5 unit 1

1. The human system that moves blood through the body is called...................................... system.

• a. digestive

• b. respiratory

• c. circulatory

• d. nervous

2. Air enters the human body through the....................................

• a. nose only.

• b. mouth only.

• c. nose and mouth.

• d. mouth and stomach.

3. The human circulatory system consists of,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

• a. lungs and heart.

• b. heart and blood vessels.

• c. blood vessels and stomach.

• d. heart and pancreas.

4........................................... carry blood which is rich in oxygen and glucose from the heart to the body cells.

• a. Arteries

• b. Veins

• c. Lungs and veins

• d. Brain and veins

5. Blood rich in carbon dioxide gas returns back to the heart through.....................................

• a. arteries.

• b. veins.

• c. lungs.

• d. xylem.

6-............................... system in plants consists of tubes that water and nutrients move through it.

• a. Digestive

• b. Respiratory

• c. Transport

• d. Nervous

7. The heart in the human circulatory system consists of.......................................................

• a. two arteries and two ventricles.

• . b. two atria and two ventricles.

• c. two veins and two atria.

• d. two ventricles and two veins.

8. Glucose sugar is transported from the leaves to other parts of the plant through ..................................

• a. xylem.

• b. phloem.

• c. roots.

• d. stems.

9-..................................... in the leaves allow air to enter the plant.

• a. Xylem

• b. Phloem

• c. Stomata

• d. Chlorophyll

10-In plant's leaves, light energy is converted into ..........................energy during photosynthesis process.

• a. sound

• b. electric

• c. chemical

• d. kinetic