Ncert- science – class 7- Chapter 7 – Transportation in Animals and Plants 1 Welcome to your Ncert- science – class 7- Chapter 7 – Transportation in Animals and Plants 1 1. The walls of veins are not thick as those of arteries because? The blood is under low pressure. The blood is thicker. The blood is in less quantity. The blood is deoxygenated. None 2. The heart is an organ that beats continuously to act as a pump for the transport of blood, which carries other substances with it.The heart is located in the chest cavity with its lower tip slightly tilted towards the left.The two upper chambers are called the atria.the two lower chambers are called the ventricles.Correct statements about the human heart are- 1 and 4 are correct. 3 and 4 are incorrect. 1, 2 and 4 are correct. All statements are correct. None 3. Urine is stored in the Ureter Urinary bladder Kidney Urethra None 4. None 5. The tubes which connect the kidney and urinary bladder is known as Urethra Kidney Ureter None of the above None 6. Which among the following is/are function of blood vessels? Blood vessels are the tube-like structures which carry the blood through cells, tissues and organs. Blood vessels are the flat structures which transport oxygen to different parts of the body. Blood vessels absorbs oxygen from air in the heart. All of the above. None 7. Which of the following activities benefit in maintaining a healthy heart? Quitting smoking Practicing Yoga Walking everyday All of the above None 8. The capillaries join up to form _____ which empty into the _____. Veins, Lungs Arteries, Heart Veins, Heart Arteries, Lungs None 9. The correct sequence of urine movement is Bladder -->Urethra -->Kidney -->Ureter Bladder --> Kidney --> Ureter -->Urethra Kidney -->Ureter -->Bladder -->Urethra Kidney -->Bladder -->Ureter --> Urethra None 10. Why is the blood from the heart should be transported to the lungs? None of the above For removal of oxygen For removal of water For removal of carbon dioxide None 11. Which of the following is used as artificial kidney in the patients suffering from kidney failure?, Filteration Circulation Dialysis Ventilation None 12. The stethoscope was discovered by Leopold Auenbrugger Antonie van Leeuwenhoek Rene Laennec Jean-Nicolas Corvisart None 13. The relatively clear fluid medium which carries various other suspended cells of blood is called________. WBC Plasma Platelets RBC None 14. Which of the following statements are true-Pulmonary artery carries blood from the heart, so it is called an artery and not a vein.It carries carbon dioxide-rich blood to the lungs.Pulmonary vein carries oxygen-rich b Statement 1 and 2 are true Statement 2 and 3 are true Statement 3 and 1 are true All the statements are true None 15. The composition of urine is: 95% water, 2.5 % urea and 12.5% other waste 25% water, 2.5 % urea and 2.5% other waste None of the above 95% water, 2.5 % urea and 2.5% other waste None 16. Pulmonary vein carries oxygenated blood from: Heart to lungs Heart to its walls Heart to all body parts Lungs to heart None 17. Arteries can be distinguished from veins because the arteries have: More plasma Thinner walls Thicker walls More blood cells None 18. Due to the presence of hemoglobin, ____________. Arteries appear red Veins appear red Veins appear blue Arteries appear blue None 19. The separation of the atria and ventricles helps to: Prevent mixing of the blood. Both A and C. Pump blood only to upper parts of the body. Pump blood only to lower parts of the body. None 20. Which of the following is likely to increase in number when the body is under attack from bacteria? WBCs Platelets Bone cells RBCs None 21. Arteries are best defined as the vessels which Carry blood from one visceral organ to another visceral organ Break up into capillaries which reunite to form a vein Carry blood away from the heart to different organs Supply oxygenated blood to the different organs None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
