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Excretion questions

Excretion questions | form three Biology

Find Excretion examination questions, form three Biology in acaproso.com

# Question
1

Which of the following is a metabolic waste product?
A Tears
C Mucus
E Urine
B Saliva
D Faeces


Multiple choices
2

Bowman's capsule in the kidney functions as a
A filter
D sponge
B sanction pump
E absorber
C transmitter


Multiple choices
3

Bowman's capsule is found in which of the following organs?
A Liver
D Spleen
B Pancreas
E Heart
C Kidney


Multiple choices
4
  1. Give the meaning of the term Excretion
  2. (i) List down the types of excretory products in plants

(ii)In what ways are plant excretory products useful?


Short answers
5

The diagram below (Figure 4) shows a kidney and its blood supply.

Excretion Kidney

Which of the following correctly compares the carbon dioxide and urea content of the blood in vessels
X andY?

  Carbondioxide in X Urea in Y

A

B

C

D

E

less

more

less

more

same

less

less

more

more

same

 


Multiple choices
6

How do plants get rid of excretory products? Briefly explain three ways.


Short answers
7

Consider that you are a medical doctor and you have received a patient whose investigation has diagnosed kidney stones. Suggest to the patient three possible causes and three control measures for kidney stones.


Short answers
8

With the aid of a well labelled diagram, describe the urinary system and explain the process of urine formation in human beings.


Long answers
9

The kidney in animals is mainly responsible for

  1. excretion
  2. digestion
  3. transportation
  4. respiration
  5. absorption.

Multiple choices
10

A blood vessel which takes away blood from the glomerulus is narrower than the blood vessel which enters blood into the glomerulus. What does it imply with respect to urine formation?

  1. Creates low pressure for efficient filtration of blood
  2. Increases surface area for selective reabsorption
  3. Builds up high pressure for ultra-filtration of blood
  4. Reduces diffusion distance for faster filtration
  5. Create high pressure for ultra-filtration of urine

Multiple choices