Question

1. The muscular tube through which stored urine is passed out of the body is
called –
 (a) kidney
 (b) ureter
 (c) urethra
 (d) urinary bladder
2. They are pipe-like, consisting of a group of specialized cells. They transport
substances and form a two-way traffic in plants. Which of the following
terms qualify for the features mentioned above?
 (a) Xylem tissue
 (b) Vascular tissue
 (c) Root hairs
 (d) Phloem tissue
3. The absorption of nutrients and exchange of respiratory gases between
blood and tissues takes place in –
 (a) veins
 (b) arteries
 (c) heart
 (d) capillaries
4. In which of the following parts of human body are sweat glands absent?

 (a) Scalp
 (b) Armpits
 (c) Lips
 (d) Palms
5. In a tall tree, which force is responsible for pulling water and minerals from
the soil?
 (a) Gravitational force
 (b) Transportation force
 (c) Suction force
 (d) Conduction force
6. Aquatic animals like fish excrete their wastes in gaseous form as
 (a) Oxygen
 (b) Hydrogen
 (c) Ammonia
 (d) Nitrogen
Very Short Answer Type Questions
1. Veins have valves which allow blood to flow only in one direction. Arteries do
not have valves. Yet the blood flows in one direction only. Can you explain
why?
2. What is the special feature present in a human heart which does not allow
mixing of blood when oxygen-rich and carbon dioxide-rich blood reach the
heart?
3. Name the organ which is located in the chest cavity with its lower tip slightly
tilted towards the left.

Answer 1

Answer:

1. C urethra

2. D phloem tissues

3. D capillaries

4. C lips

5. C suction force

6. C ammonia

Answer 2

1. C
2. D
3. D
4. C
5. C
6. C

Very Short Answer

1. Veins have valves because blood flows with less pressure and there are chances that it comes back. Thus to prevent blood from coming back it has valves whereas in arteries blood flows at high pressure so it won't come back. Thus, it doesn't have valves.
2. septum
3. The heart