Question

Q1. Draw a neat labeled diagram of human alimentary canal.

Q2.State the role of the following in human digestive system:
(a) Digestive enzymes
(b) Hydrochloric acid (Hel)
(c) Villi

Q3.Draw a diagram of human respiratory system and label the following:
(a) Part where air is filtered by fine hairs and mucus
(b) Part which terminates in balloon like structures
(c) Part which separates chest cavity from abdominal cavity
(d) Part where exchange of gases takes place.

Q4. Draw a neat labeled diagram of opened and closed stomata.​

Answer 1

Answer:

q2)a) digestive enzyme helps breaking down big component to smaller onces

b)hcl helps in killing bacteria in stomach and break down of components

c)villi absoure the fact globules,protines, vitamins.etc and it increase the surface area of more absourbtio of energy from food