Advertisements
Advertisements
Question
The excretory organs in an earthworm are:
(a) nephridia
(b) nephrons
(c) raphides
(d) ureters
Solution
(a) nephridia
In earthworm, the main excretory organs are nephridia. It functions like a kidney.
APPEARS IN
RELATED QUESTIONS
Name the Following
The organ which produces urea.
The diagram given below shows a section of human kidney. Study the diagram carefully and answer the questions that follow :
(i) Label the parts numbered 1 to 4.
(ii) Why does part ‘2’ have a striped appearance?
(iii) What is the fluid that passes down part ‘4’? Name the main nitrogenous waste present in it.
(iv) Mention the structural and functional units of kidneys.
(v) Name the two major steps in the formation of the fluid mentioned in Q.5 (a) (iii).
Write the functions of the Urinary bladder
Define excretion
Where is the dirty blood in our body filtered?
With which human organ system (or human systems) is glomerulus associated?
What is the function of excretory system in humans?
Why is excretion necessary in living beings?
Correct and rewrite the statements by changing the biological term that is underlined for the statement:
The kidney is composed of number of neurons.
Choose the correct answer:
A condition of failure of kidney to form urea is called ____________
Choose the odd one out in the following series:
Renal fat, renal capsule, nerve.
Label the diagram given below :
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1to 8 are as follows:
1. Afferent arteriole from renal artery
2. Efferent arteriole
3. Bowman's capsule
4. Glomerulus
5. Proximal convoluted tubule with blood capillaries
6. Distal convoluted tubule with blood capillaries
7. Collecting tubule
8. U-shaped loop of Henle
Study the diagram and answer the question that follow:
Which structure contains the highest concentration of urea?
Differentiate between:
Renal cortex and Renal medulla.
Name the Following
The division of the kidney which is light in colour and subdivided into conical renal pyramids.
Name the Following
The process by which kidneys regulate the water content of the body.
Give Technical Term:
The tube joining the kidney to the urinary bladder.
Write the functional activity of the following structure: Vasopressin
In a person the tubule part of the nephron is not functioning at all. What will its effect be on urine formation?
“All plants give out oxygen during the day and carbon dioxide during the night”. Do you agree with this statement? Give a reason.
