Accessory Excretory Organs

Q.

Aquatic animals like fish excrete their wastes in gaseous form as

1. Oxygen

2. Hydrogen

3. Ammonia

4. Nitrogen

Q.

Aquatic amphibians and chondrichthyes excrete ___ and ____, respectively.

1. ammonia, urea

2. urea, ammonia

3. uric acid, urea

4. ammonia, uric acid

Q. Question 2 (vi)
Fill in the blanks.
(vi) Sweat contains water and ___.

Q. Lungs help in excretion of carbon dioxide.

1. True
2. False

Q.

How does the skin help in controlling water balance and excretion?

Q.

Why do athletes sweat after a race?

Q.

What are the excretory substances present in urine

Q. Match the following excretory products to the waste it contains.

1. Bile
2. Hydrocarbons
3. Urea

Q. Which of the following is metabolic waste of protein metabolism?

1. NH${}_3$, urea and CO${}_2$
2. Urea, oxygen and N${}_2$
3. Urea, ammonia and alanine
4. Urea, ammonia and creatinine

Q. Unscramble and match the following.
$\begin{array}{cc}\text{Column A}& \text{Column B}\\ \text{a. NIKS}& \text{i. Bile pigments}\\ \text{b. SUNLG}& \text{ii. Faeces}\\ \text{c. NITETESNI}& \text{iii. Sweat}\\ \text{d. IVERL}& \text{iv. Carbon dioxide}\end{array}$

1. a-ii, b-iii, c-i, d-iv
2. a-i, b-iii, c-iv, d-ii
3. a-i, b-iv, c-ii, d-i
4. a-iii, b-iv, c-ii, d-i

Q. Write the names of any two excretory organs in human beings. [1 Mark]

Q. Unscramble and match the following.
$\begin{array}{cc}\text{Column A}& \text{Column B}\\ \text{a. NIKS}& \text{i. Bile pigments}\\ \text{b. SUNLG}& \text{ii. Faeces}\\ \text{c. NITETESNI}& \text{iii. Sweat}\\ \text{d. IVERL}& \text{iv. Carbon dioxide}\end{array}$

1. a-i, b-iii, c-iv, d-ii
2. a-i, b-iv, c-ii, d-i
3. a-ii, b-iii, c-i, d-iv
4. a-iii, b-iv, c-ii, d-i

Q. Which of the following is a metabolic waste of protein metabolism?

1. NH${}_3$, urea and CO${}_2$
2. Urea, ammonia and alanine
3. Urea, Oxygen and N${}_2$
4. Urea, ammonia and creatinine

Q.

Can urine kill bacteria?

Q.

Arrange the following statements in the correct order in which they occur during the formation and removal of urine in human beings.
(a) Ureters carry urine to the urinary bladder.
(b) Wastes dissolved in water are filtered out as urine in the kidneys.
(c) Urine stored in urinary bladder is passed out through the urinary opening at the end of the urethra
(d) Blood containing useful and harmful substances reaches the kidneys for filtration.
(e) Useful substances are absorbed back into the blood.

Q. The function of ureters in excretory system of humans is to __________ .

1. stimulate micturition in the bladder.
2. produce urine in kidneys.
3. transport urine to urinary bladder.
4. transfer urine into the kidney.

Q. To which of the following life process is sweating associated with?

1. Excretion
2. Nutrition
3. Growth
4. Respiration

Q. The function of ureters in excretory system of humans is to __________.

1. stimulate micturition in the bladder
2. transport urine to urinary bladder
3. produce urine in kidneys
4. transfer urine into the kidney

Q. Which of the following is not a nitrogenous waste; that must be excreted from the body?

1. Faeces
2. Uric acid
3. Urea
4. Ammonia

Q. Choose the correct answers from the following given.
In which of the following human structures are you least apt to find urine?

1. Large intestine
2. Urethra
3. Ureter
4. Bladder

Q.

How does skin assist in the process of excretion?

1. Through sweating.

2. By wrinkling.

3. Through evaporation.

4. By tanning.

Q. Carbon dioxide is a waste byproduct of cellular respiration. This is removed out of the body by the .

1. lungs
2. kidney
3. heart
4. skin