(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Biology

Give reason:

Why does the cortex of kidneys shows a 'dotted' appearance?

Give reason:

Why does the medulla of kidneys show a ‘striped’ appearance?

Given below is a simple diagram of the longitudinal section of a human kidney. Study the same and answer the following questions:

1. Name the part of kidney which is found between medulla and pelvis.
2. What is the basic structural and functional unit of kidney?
3. What is main function of kidney?
4. Mention the exact location of kidney.
5. Write two differences in the composition of blood flowing through blood vessels A and B.
6. Name the part of kidney which collects urine for the first time from the nephrons.
7. Define 'Osmoregulation'.
8. Name the technique which is normally suggested by the doctors to the patients in case of a permanent damage to both the kidneys.
   1. Name the hormone which is associated with the 'reabsorption' step of urine production.
9. Draw a neat and labelled diagram of a malpighian capsule.

The figure given below represents a kidney tubule in humans and its blood supply. Study the figure and answer the questions that follow. Write specific name and numbers shown in the diagram for each answer.

1. Name the part which consists of a knot - like mass of blood capillaries.
2. What is the specific name for the combination of parts shown as 5 and 3?
3. Name the part which collects the glomerular filtrate.
4. Where is the most water reabsorbed?
5. Name the part which collects urine in the diagram shown.
6. Which part lies in the medulla of the kidney?
7. Which of the above parts is involved in the process of tubular secretion?
8. How is hydrostatic pressure created?
9. Where does ultrafiltration take place?
10. Name two important constituents of urine.

Write one word for the following:

Point of contact between two nerve cells.

Draw neat and labelled diagrams of Malpighian capsule

What is a nucleosome?

One of the following sets of body parts or substances or processed, pick out the one item which overall includes the remaining foir.

ADH, Water, pituitary, osmoregulation, urine 

Write down the functional activity of the following parts, 

Urethra …………………… 

Define the following term:

Ultrafiltration

Explain the terms ultrafiltration and selective absorption 

Name the following:
Organ where ultrafiltration occurs.

Name any three vestigial organs found in humans.

Give the working of the nephron.

Give Reasons for the following:
As a result of ultrafiltration along with excretory products certain useful products like glucose, salt, etc. are also filtered but these are not excreted?

Differentiate between Afferent arteriole and Efferent arteriole.

Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

Sometimes urine may contain certain excess vitamins.

Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

Glomerular filtration occurs under pressure on the blood as a result of systolic pressure of the heart.

Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

Glomerular filtrate consists of many substances such as water, salts, glucose and white blood corpuscles.

Write the functional activity of the following structure: Bowman’s capsule