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Transportation in Animals and Plants Test - 7

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Transportation in Animals and Plants Test - 7
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  • Question 1
    1 / -0
    Food substances travel up and down through ______
    Solution
    Water and salt travel upwards mainly in the xylem and food substances travel up and down in the phloem.
  • Question 2
    1 / -0
    Phloem is responsible for transporting _____ in plants.
    Solution
    Xylem transports and stores water and water-soluble nutrients in vascular plants. Phloem is responsible for transporting sugars, proteins, and other organic molecules in plants.
    So, the correct answer is option D.
  • Question 3
    1 / -0
    The number of beats _______ is called the pulse rate.
    Solution
    Pulse is a term that signifies the throbbing of arteries as an effect of heartbeat and is counted by the number of beats per minute, which is called the pulse rate. The normal pulse rate (count of arterial pulse beats per minute) in a healthy adult at rest ranges from 72 to 80 beats per minute. However, the pulse rate may fluctuate with exercise, illness, injury and emotions. The pulse rate of an individual can be checked at various points on the body. These points are the neck, inside of the elbow, the wrist, groin, behind the knee, ankle joint and foot.
    So, the correct answer is option C.
  • Question 4
    1 / -0
    The rhythmic contraction and relaxation of heart muscles makes a
    Solution
    Heartbeat is rhythmic contraction and relaxation of heart muscles is called a heartbeat. Heart rate is the speed of the heartbeat measured by a number of contraction of the heart per minute.
     Thus the correct answer is C.
  • Question 5
    1 / -0
    Aniruddha wants to make a stethoscope. He is confused what he should use for its tube portion. Help him.
  • Question 6
    1 / -0
    Which of the following can be used to make a stethoscope at home?
    Solution
    Steps to construct a stethoscope at home:
    1) Take a funnel and put its small end at one end of the flexible tube. Push the funnel as far as u can into the tube.
    2) Tape the funnel using suitable tape.
    3) Inflate the balloon to stretch it out. Let the air out and then cut the neck of the ballon.
    3) Stretch the remaining part of the balloon tightly over the open end of the funnel, and tape it. This creates the tympanic membrane for the stethoscope
    4) Place the funnel end of the stethoscope on to the chest and end of the tube to the ear to listen to the heartbeat.
    Hence rubber tube, balloon and funnel can be used to make a stethoscope at home.
    So, the correct answer is 'All of the above'.
  • Question 7
    1 / -0
    Raman went to the doctor. On which side of the chest will the doctor keep the stethoscope for hearing his heartbeat?
    Solution
    • In humans, the heart is present in the chest region. 
    • It is located between the lungs and above the diaphragm. 
    • The heart is slightly tilted towards the left side and thus, a stronger heartbeat can be felt on the left side. 
    • Hence the doctor will keep the stethoscope for hearing Raman's heartbeat on the left side of his chest.
      • Thus the correct answer is option C.
  • Question 8
    1 / -0
    The movement in the vessels on the wrist is due to the 
    Solution
     The heart rate is the same as pulse rate because the pumping action of the heart causes an increase in blood pressure in arteries. Hence the movement in the vessels on the wrist is due to the pulse.
    So, the correct answer is 'Pulse'.
  • Question 9
    1 / -0
    The correct sequence of urine movement is
    Solution
    Urine is formed in the kidney. The tubes which connect the kidney and urinary bladder are known as the ureter. From the kidney, urine is propelled into the urinary bladder through ureters which are made of smooth muscle fibres. The bladder stores urine, allowing urination to be infrequent and can be controlled. The urethra is a long tube which connects the urinary bladder to the urinary opening for removal of urine from the body. 
     So the correct sequence of urine movement is Kidney -->Ureter -->Bladder--> Urethra.
    So, the correct answer is 'Kidney -->Ureter -->Bladder -->Urethra'.
  • Question 10
    1 / -0
    The separation of the atria and ventricles helps to:
    Solution
    • The two upper chambers are called the atria (singular: atrium) and the two lower chambers are called the ventricles. 
    • The partition between the chambers helps to avoid mixing up blood rich in oxygen with blood rich in carbon dioxide.
    Thus, the correct answer is option A.
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