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

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)

Name the following in human system:
(i) Balloon like structures richly supplied with blood capillaries.
(ii) Prevents the back flow of blood in heart.
(iii) squeeze out the water with amino acids and other wastes and separates from the blood.
(iv) Bring impure blood to kidney.
(v) Rythmic contraction and relaxation of walls of digestive system

2

(a)

Name the excretory wastes of the following:
(a) Digestive systems
(b) Kidney
(c) Skin
(d) Lungs
(e) Plants stem
(f) Leaves

2

(a)

Give the role of the following in plants and animals:
(a) Guard cells
(b) Tracheids and vessels
(c) Lymph
(d) Phloem
(e) Bio-catalyst

2

(a)