Excretion

Q. Draw a well labelled diagram of kidney.

Q. How many nephrons are present in our kidneys??

Q. Which of the following organ is responsible for filtering blood?

1. Heart
2. Lungs
3. Kidneys
4. Liver

Q.

Why do dogs always keep their tongue out?

Q.

Name the various waste products produced in the body.

Q. The process of eliminating waste products from the body is called _______.

1. excretion
2. reproduction
3. respiration
4. circulation

Q. Does both kidneys work simultaneously

Q.

The process of getting rid of the waste products in an organism is called __.

Q. What is the significance of tubular secretion?

1. To maintain the ionic balance
2. To maintain the hypotonic condition with the plasma
3. To maintain the air pressure
4. To maintain the hypertonic condition with the plasma

Q.

Sweat contains water and __.

Q.

The bean shaped organ that filters the waste materials out of blood is:

1. kidney

2. brain

3. heart

4. liver

Q.

How do humans excrete waste?

Q. Why is it necessary to excrete waste products?

Q.

The process of removal of wastes from the body is called ______________.

Q. The only function of sweat is excretion of waste products from the body.TRUE or FALSE?

Q.

The process of removing wastes in living beings is known as excretion.

1. True

2. False

Q. Question 2 (v)
Fill in the blanks.
(v) The main excretory product in human beings is ___.

Q.

Why do tears come out of our eyes when we cry

Q.

Choose the option that gives the major excretory product of the organism mentioned. (Eg: Humans – Urea).

1. Dogs – Urea, Fish – Ammonia, Birds – Uric Acid

2. Dogs – Ammonia, Fish – Urea, Birds – Ammonia

3. Dogs – Urea, Fish – Ammonia, Birds – Urea

4. Dogs – Urea, Fish – Ammonia, Birds – Ammonia

Q. The muscular tube through which urine is passed out of the body is called __________.

1. kidney
2. ureter
3. urethra
4. urinary bladder

Q. The process by which waste products of metabolism are removed from our body is known as:

1. Evacuation
2. Exhalation
3. Excretion
4. Inhalation

Q.

Name the chemical used in the experiment which absorbs oxygen.

1. Pyrogallic acid

2. Sulphuric acid

3. Acetic acid

4. Calcium carbonate

Q.

Urine consists of 95% urea.

1. True

2. False

Q. How is waste removed from the body of humans?

Q.

Are humans uricotelic?

Q.

Write about the location, structure, and functions of the kidney. [3 MARKS]

Q. How is waste removed from the body of humans?

Q.

Name the chemical used in the experiment which absorbs oxygen.

1. Pyrogallic acid

2. Sulphuric acid

3. Calcium carbonate

4. Acetic acid

Q.

Which among the following are the functions of sweat?

1. It removes wastes

2. It cools the body

3. Reduces fat tissues

4. It removes wastes and cools the body

Q. What is diffusion?Name an organism that excretes by diffusion