Last updated on December 14th, 2023 at 08:36 am
What is the main function of arteries in the human body?
a) Carry blood away from the heart
b) Carry blood to the heart
c) Carry oxygen to the lungs
d) Carry waste products to the kidneys
Answer: a) Carry blood away from the heart
What is the average heart rate in an adult human?
a) 40-50 times per minute
b) 60-70 times per minute
c) 70-80 times per minute
d) 90-100 times per minute
Answer: c) 70-80 times per minute
In plants, what process is responsible for the loss of water vapor through stomata?
a) Osmosis
b) Photosynthesis
c) Transpiration
d) Respiration
Answer: c) Transpiration
Which part of the circulatory system carries blood from all parts of the body back to the heart?
a) Veins
b) Arteries
c) Capillaries
d) Aorta
Answer: a) Veins
What do plants absorb from the soil through their roots?
a) Carbon dioxide
b) Water and mineral nutrients
c) Sunlight
d) Oxygen
Answer: b) Water and mineral nutrients
Which blood component is responsible for carrying oxygen to cells and carbon dioxide away from cells?
a) Platelets
b) White Blood Cells (WBC)
c) Red Blood Cells (RBC)
d) Plasma
Answer: c) Red Blood Cells (RBC)
The vascular tissue responsible for transporting food to various parts of the plant is called:
a) Xylem
b) Epidermis
c) Phloem
d) Stomata
Answer: c) Phloem
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