Question

UUDULUTUL
III. I
Q-1: Attempt any five parts. All carry equalm arks.
[5x3=15]
a) What are the three major types of blood vessels and their ·
functions?
b) i) Calculate the pressure exerted on the floor when an
elephant who weighs 2400N stands on one foot which has
an area of4 m??
c)
d)
Whatd oes a prism do to a white light?
What law ofr eflection of light? Is it applicable to sound as well?
Why / Why not?
Give three differences between chemical and physical changes.
Does the shape of the container affectl iquid pressure?
How alveoli can speed up the process ofe xchange of gases
during breathing?
e)
f)​

Answer 1

Answer:

a. arteries ,veins and capillaries.

arteries:it carries oxygen rich blood away from the heart to other parts of the body.

capillaries: this connect arteries and veins.

veins: it carries deoxygenated blood from different parts to heart