The muscular tube through which stored urine is passed out of the body is called

Which among the following contain haemoglobin?

They are pipe-like consisting of a group of specialised cells. They transport substances and form a two-way traffic in plants. Which of the following terms qualifies for the features mentioned above?

A certain type of cells helps in destruction of disease-causing microorganisms are known as

In which of the following parts of human body are sweat glands absent?

The lower chambers of heart is called

Aquatic animals like fish excrete their wastes in gaseous form as

The filtration of blood is done by

In a tall tree which force is responsible for pulling water and minerals from the soil?

Transport of water in plants takes place through

Water reaches great heights in the trees because of suction pull caused by __________.

The _________ is an organ which beats continuously to act as a __________.

Heart is located in the ___________.

The parts or organs involved in excretion to form the _________.

Heart has four _________ called as chambers.

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?

Human blood group is divided into how many groups? Name them.

Pulse rate can indicate the health states of an individual. How?

Exchange of gases, food and other substances occurs between arteries and veins. How does this exchange happen?

Urine is called an excretory product. Why?

What is the relation between the rate of heartbeat and pulse rate? If a pulse rate of an athlete is 96/min, what will be the number of his heartbeat at the same time?

Give one function of each of the following organs.
(a) Blood vessels
(b) Kidney
(c) Blood platelets
(d) Heart.

Make a table depicting the function of all chambers of the human heart.

How does the water move from root to leaves?

Priya's grandfather was taken to the hospital as he was unable to perform excretory processes. Priya heard a nurse talking to her father that her grandfathers has kidney failure and needs to undergo dialysis. Priya later asked her father as to what is dialysis process and why does grandpa needs it. Her father smiles and tells her all the facts associated with this process.
(a) What do you mean by dialysis?
(b) Why is there a need for dialysis in some people?
(c) Excretion is an important life process. How?
(d) Which is the major excretory organ in humans?
(e) What values do you observe in Priya?

While riding a bike, Mason fell from it due to loss of balance. He got up and realised that he was bleeding from several wounds badly. He panicked and started to run but Mansi who was looking at him, stopped him and told him to clean his wound with a clean cloth and that blood will stop coming in a while. Mason noticed that he has stopped bleeding after sometime and a hard covering was appearing on his wounds.
(a) Why did the bleeding stop after a while?
(b) What is blood and what type of cells are responsible for clotting?
(c) What of values do you think Mansi have?