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WorksheetsGrade 9 Biology Study Materials
Total questions: 27
Worksheet time: 17mins
What is the function of red blood cells?
To carry oxygen using haemoglobin.
To fight infections in the body.
To help in blood clotting.
To produce hormones.
What are the three types of blood vessels?
Arteries, veins, and capillaries.
Arteries, nerves, and muscles.
Veins, bones, and tissues.
Capillaries, ligaments, and tendons.
What is the role of auxins in phototropism?
Auxins accumulate on the shaded side of the plant, causing cell elongation and bending towards light.
Auxins are responsible for the absorption of water in roots.
Auxins help in the process of photosynthesis by producing chlorophyll.
Auxins cause the plant to grow away from the light source.
What is the difference between the CNS and PNS?
CNS includes the brain and spinal cord; PNS includes nerves connecting the CNS to the rest of the body.
CNS includes only the nerves; PNS includes the brain and spinal cord.
CNS and PNS both include only the brain.
CNS and PNS are two names for the same system.
What happens during systole?
The heart contracts to pump blood.
The heart relaxes to fill with blood.
The lungs expel carbon dioxide.
The kidneys filter waste from blood.
A capillary is:
a large blood vessel
a small blood vessel
a type of nerve cell
a type of muscle fiber
Sickle cell anemia is caused by:
A deficiency of iron in the diet
A mutation in the hemoglobin gene
A viral infection
A lack of vitamin B12
Which part of the blood transports hormones and waste products?
Red blood cells
White blood cells
Plasma
Platelets
Which type of blood vessel has valves?
Arteries
Capillaries
Veins
All of the above
What is the main function of white blood cells?
(a)
Which disease is caused by a deficiency of iron?
Leukemia
Sickle cell anemia
Iron deficiency anemia
Haemophilia
Which chamber of the heart receives oxygen-rich blood from the lungs?
Right atrium
Left atrium
Right ventricle
Left ventricle
What structure in neurons carries impulses away from the cell body?
Dendrite
Axon
Nucleus
Receptor
What causes haemophilia?
Lack of red blood cells
Lack of clotting proteins
Excess iron
Sickle-shaped cells
Which blood vessel carries oxygenated blood from the lungs to the heart?
Aorta
Pulmonary vein
Pulmonary artery
Vena cava
What is the primary function of the left ventricle?
To pump blood to the lungs.
To pump oxygenated blood to the body.
To regulate blood pressure.
To receive deoxygenated blood from the body.
Which type of blood cell is primarily involved in the immune response?
White blood cells
Platelets
Red blood cells
Plasma cells
What is the role of the sinoatrial node in the heart?
To initiate the heartbeat.
To regulate blood flow.
To produce red blood cells.
To filter blood.
What is the primary function of auxins in plant growth?
To stimulate root growth.
To control flowering time.
To regulate water loss.
To promote cell division.
Which part of the heart is responsible for pumping deoxygenated blood to the lungs?
Left ventricle
Right atrium
Left atrium
Right ventricle
What is the role of platelets in the blood?
To fight infections.
To transport oxygen.
To aid in blood clotting.
To carry nutrients.
What is the primary function of the right ventricle?
To regulate blood pressure.
To pump deoxygenated blood to the lungs.
To receive deoxygenated blood from the body.
To pump oxygenated blood to the body.
Which type of blood cell is responsible for transporting oxygen?
White blood cells
Platelets
Plasma cells
Red blood cells
What is the role of the atrioventricular node in the heart?
To filter blood.
To initiate the heartbeat.
To regulate the electrical signals between the atria and ventricles.
To pump blood to the lungs.
Identify the blood vessels
(Not all are used)
Brachiocephalic artery
Jugular vein
Carotid artery
Subclavian vein
Identify the following
Saphenous vein
Femoral vein
Femoral artery
Match the following
Helps aid in clotting when you have a cut
platelets/Thrombocytes
Contains Hemoglobin
RBC/Erythrocytes
Protect the body from pathogens
WBC/Leukocytes
The largest component of blood
Plasma
Carries blood AWAY from the heart
Arteries
