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Homework Practice

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Transportation in Animals and Plants: Apply and Reason

Observe and Compare

Question 1mcq
Which statement is generally correct about veins?
A.They always carry blood away from the heart.
B.They are the tubes that carry urine from kidneys.
C.They carry blood toward the heart.
D.They make food in plants.
Question 2mcq
A student says arteries and veins are the same because both carry blood. What is the best correction?
A.Arteries carry urine and veins carry air.
B.Only veins are connected to the heart.
C.Arteries exist only in plants.
D.They both carry blood, but arteries carry it away from the heart and veins carry it toward the heart.
Question 3mcq
What is pulse?
A.The rhythmic expansion of arteries due to heartbeat
B.The movement of water through xylem
C.The opening and closing of stomata
D.The digestion of starch
Question 4mcq
Why does pulse rate usually rise after running?
A.The heart stops pumping blood.
B.The heart pumps faster to deliver more oxygen and nutrients to muscles.
C.Muscles need less energy during running.
D.Blood turns into air.
Question 5mcq
A student measures pulse for 1515 seconds and counts 2020 beats. What is the pulse rate per minute?
A.2020 beats per minute
B.3535 beats per minute
C.8080 beats per minute
D.300300 beats per minute

Reason Like a Scientist

Question 6mcq
Why is the wrist commonly used to feel pulse?
A.A vein there makes food.
B.The wrist contains stomata.
C.Urine passes through the wrist.
D.An artery lies close enough to the surface to feel its expansion.
Question 7mcq
A student compares pulse before and after exercise but counts for 1010 seconds before and 3030 seconds after. What is wrong?
A.The counting time is not the same, so comparison is unfair unless converted properly.
B.Pulse cannot be measured at all.
C.Exercise never affects pulse.
D.Only plants have pulse.
Question 8mcq
Which organs filter wastes from blood to form urine?
A.Lungs only
B.Kidneys
C.Heart valves
D.Stomata
Question 9mcq
What is the correct path of urine after it is formed in the kidneys?
A.Bladder ightarrow ightarrow lungs ightarrow ightarrow arteries ightarrow ightarrow kidney
B.Kidneys ightarrow ightarrow bronchi ightarrow ightarrow alveoli
C.Kidneys ightarrow ightarrow ureters ightarrow ightarrow bladder ightarrow ightarrow urethra
D.Xylem ightarrow ightarrow phloem ightarrow ightarrow stomata
Question 10mcq
Why is excretion necessary?
A.It makes all food in leaves.
B.It pumps blood to muscles.
C.It creates wind from pressure.
D.It removes harmful wastes produced by body cells.