Q49. What is blood?
Or
How does the blood carry various substances?
Q50. State one function of the following:
i. Arteries
ii. Veins
iii. Capillaries
Q51. What are stomata? Give two functions of stomata.
Q52. What are the components of blood?
Q53. Differentiate between arteries and veins.
Q54. Describe the function of the heart.
Q55. Draw a diagram of the human excretory system and label the various parts.
Q56. Draw a labeled diagram of the human heart.
Q57. Write a note on excretory system in humans.