FIRST QUARTER S.Y. 2020 – 2021
Summative Test 1
Grade 9 Science
Name: _______________________________ Year / Section: __________________________
LRN: _______________________________ Score: ________________________________
Directions: Encircle the letter of the best answer.
1. Which of the following best describe your lungs?""
a. Porous and spongy c. Inflated balloons"
b. Flat and thick tissues d. highest organ of the human body"
2. Where does the exchange of gases take place?""
a. Pharynx c. Air sacs""
b. Trachea d. Bronchial tubes""
3. What happens to the diaphragm when you exhale?""
a. It relaxes c. It contracts"
b. It expands d. It moves up and down"
4. Which of the following is NOT a function of the circulatory system?""
a. Taking oxygen to cells""
b. Obtaining nutrients from small intestines to cells"
c. Removing cell waste"
d. Maintaining calcium levels in the blood"
5. What system is responsible for the exchange of oxygen and carbon dioxide between the"air and the cells?"
a. Circulatory c. Excretory"
b. Integumentary d. Respiratory"
6. What is the primary organ of the circulatory system?"
a. Heart c. Vein"
b. Artery d. Blood"
7. What type of circulation is described by the movement of blood through the tissues of the"heart?"
a. Coronary Circulation c. Closed Circulation
b. Pulmonary Circulation d. Systemic Circulation"
8. How will you describe the pathway of oxygen in the breathing system?"
a. From the nose and mouth, oxygen travels to the bronchi, bronchioles, trachea and then"into the alveoli."
b. From the nose and mouth, oxygen travels to the trachea, bronchioles, bronchi, and then"into the alveoli."
c. From the nose and mouth, oxygen travels to the trachea, lungs, bronchioles, and then into"the alveoli."
d. From the nose and mouth, oxygen travels to the trachea, bronchi, bronchioles, and then"into the alveoli."
9. What is a large flat muscle that separates the lungs from the stomach area and that is"used in breathing?"
a. Lung c. Rib cage"
b. Heart d. Diaphragm"
10. Which of the following prevents the back flow of blood?"
a. Atrium c. Ventricle"
b. Valve d. Septum"