EASY
7th CBSE
IMPORTANT
Earn 100
Aquatic animals like fish excrete their wastes in gaseous form as
77.78% studentsanswered this correctly
Important Questions on Transportation in Animals and Plants
MEDIUM
7th CBSE
IMPORTANT
Veins have valves which allow blood to flow only in one direction. Arteries do not have valves. Yet the blood flows in one direction only. Can you explain why?
EASY
7th CBSE
IMPORTANT
What is the special feature present in a human heart which does not allow mixing of blood when oxygen-rich and carbon dioxide-rich blood reach the heart?
EASY
7th CBSE
IMPORTANT
Name the organ which is located in the chest cavity with its lower tip slightly tilted towards the left.
HARD
7th CBSE
IMPORTANT
Look at the figure. Draw another figure of the same set up as would be observed after a few hours.
EASY
7th CBSE
IMPORTANT
Arrange the following statements in the correct order in which they occur during the formation and removal of urine in human beings.
a) Ureters carry urine to the urinary bladder.
b) Wastes dissolved in water are filtered out as urine in the kidneys.
c) Urine stored in urinary bladder is passed out through the urinary opening at the end of the urethra.
d) Blood containing useful and harmful substances reaches the kidneys for filtration.
e) Useful substances are absorbed back into the blood.
HARD
7th CBSE
IMPORTANT
Paheli uprooted a rose plant from the soil. Most of the root tips, with root hairs got left behind in the soil. She planted it in a pot with new soil and watered it regularly. Will the plant grow or die? Give reason for your answer.
EASY
7th CBSE
IMPORTANT
Name the only artery that carries carbon dioxide-rich blood.
EASY
7th CBSE
IMPORTANT
Why is pulmanory artery called an artery if it does not carry oxygen-rich blood?
