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Given below is a diagram of a nephron.

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Which row of the following table correctly shows where filtration and selective reabsorption occur?

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Important Questions on Life Processes

MEDIUM
Name the organs that form the excretory system in human beings.
MEDIUM

Draw excretory system in human beings and label the following organs of the excretory system which performs the following functions:

(i) form urine.
(ii) is a long tube that collects urine from the kidney.
(iii) store urine until it is passed out.

EASY
Name the basic filtration unit present in the kidney.
EASY
The major nitrogenous excretory product in mammals is:
MEDIUM

Describe the structure and functioning of Nephron.

EASY
Human urine is usually acidic because ?
HARD

The figure given below shows a part of a nephron.

Answer the questions that follow:

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(i) In which region of the kidney is the above structure present?

(ii) Label the parts numbered 1 to 4.

(iii) What is the technical term for the process that occurs in part 3?

(iv) Why is fluid X not called urine? Justify your answer.

(v) Draw a neat, labelled diagram of the urinary system of man.

MEDIUM
Explain the structure of the nephron with a labelled diagram.
HARD

Which diagram do you draw to label these parts?

(i) Bowman’s Capsule (ii) Uriniferous tubule (iii) Collecting Tubule

Draw the diagram and label the parts.

EASY
The major excretory product of birds is:
MEDIUM
State two factors on which the amount of water reabsorbed in the kidney depends on.
EASY

Choose the correct answer from the four options given below:

The structural and functional units of excretion in the human kidney is the:

HARD
Describe in brief how urine is produced in the human body.
EASY

Differentiate between the following pairs on the basis of what is indicated in the brackets.

 Ureter and Urethra [function]

EASY
Give functional unit of-
Kidney
HARD

The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow:

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(i) Identify the system.

(ii) Label the parts marked 2 and 4. Mention the function of part 5.

(iii) Name the structural and functional units of the part marked 1.

(iv) What is the fluid that accumulates in part 3? Which is the main nitrogenous waste present in it?

(v) Draw a neat, labelled diagram showing the longitudinal section of part 1.

EASY

A person was found to have a reduced level of reabsorption of water and glucose due to kidney damage. The following labelled part would be the site of damage for this patient.

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HARD
Describe the structure and function of Nephron. Draw the labelled diagram.
MEDIUM
During which process blood is filtered out in Bowman's capsule?