How the process of digestion will be affected if the bile ducts get blocked?

2

(a)

(a)What prevents the entry of food into trachea while swallowing?
(b)Why rate of breathing is faster in aquatic animals as compared to terrestrial animals?

2

(a)

What do the following transport?
(a)Xylem
(b)Phloem
(c)Pulmonary vein
(d)Pulmonary artery

2

(a)

a - What is this structure called and give its state-open or closed?
b - Where are they present?
c - What controls the opening and closing of it?
d - Draw the opposite figure to this.

2

(a)

Three organisms ate food in the form of glucose and the end products after respiration are:
a - ethanol + CO₂
b - CO₂+H₂O 
c - Lactic acid + water
Explain how is this possible?

2

(a)