Water which is absorbed by roots is transported to aerial parts of the plant through

(a)

Cortex

(b)

Epidermis

(c)

Phloem

(d)

Xylem

Root hairs are

(a)

Cortical cell

(b)

Projection of epidermal cell

(c)

Unicellular

(d)

Both (b) and (c)

The wall of human heart is made of

(a)

Endocardium

(b)

Epicardium

(c)

Myocardium

(d)

All of the above

A patient with blood group O was injured in an accident and has blood loss. Which group of blood should be used by doctor for transfusion?

(a)

O group

(b)

AB group

(c)

A and B group

(d)

All blood group

Which one of the following shows correct composition of blood?

(a)

Plasma - Blood + Lymphocyte

(b)

Serum - Blood + Fibrinogen

(c)

Lymph - Plasma + RBC + WBC

(d)

Blood - Plasma + RBC + WBC + Platelets