Selina solutions for Concise Biology Class 10 Icse chapter 9 - The Excretory system [Latest edition]

Excretion primarily involves

Maximum amount of water from the glomerular filtrate is reabsorbed in 

Which one of the following in real sense is NOT an excretory activity?

In humans, urea is formed in

Name the Following
The organ which produces urea.

Name the following: 

The outer region of kidney containing the Bowman’s capsule

Name the following: 

The tuft of capillaries inside the Bowman’s capsule 

Name the following : 

The part of kidney tubules where the term urine is first used for the fluid in it 

Name the following: 

The vein in which urea concentration is maximum 

Given below are   of five terms. Rewrite the terms in their correct order so as to be in logical sequence. 

Afferent arteriole, renal vein, capillary network, glomerulus, efferent arteriole. 

Given below are of five terms. Rewrite the terms in their correct order so as to be in logical sequence. 

Renal artery, urethra, ureter, kidney, urinary bladder. 

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

Glomerular filtrate, bowman’s capsule, ultrafiltration, glomerulus, blood plasma. 

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

Skin, liver, lungs, kidneys, excretion.

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 

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

CO₂, bile pigments, water, excretion, urea.  

Write down the functional activity of the following parts, 

Glomerulus ………………… 

Write down the functional activity of the following parts, 

Henle's loop ……………… 

Write down the functional activity of the following parts, 

Renal artery ……………… 

Write down the functional activity of the following parts, 

Renal artery ……………… 

Write down the functional activity of the following parts, 

Urethra …………………… 

Why is excretion necessary? Name the common excretory substance in our body. 

What is a uriniferous tubule? How does it function? 

Why is it necessary to maintain a normal osmotic concentration of the blood? 

If you donate one kidney to a needy patient, would it cause any harm to you? Give reason. 

In summer the urine is slightly thicker than in winter explain the reason. 

Differentiate between the following pairs of terms: 

Bowman’s capsule and malpighian capsule. 

Differentiate between the following pairs of term : 

Renal cortex and renal medulla 

Differentiate between the following pairs of term : 

Renal pelvis and renal papilla 

Differentiate between the following pairs of term : 

Urea and urine 

Differentiate between the following pairs of term : 

Excretion and katabolism 

Name the main nitrogenous metabolic waste excreted out by mammals including humans. 

Match the terms in Column I with those in Column II and write down the matching pairs 

In a nephron, the ………….. flows through the ………….. under great pressure. The reason for this great pressure is that the ………….. (outgoing) ………….. is narrower than the ………….. (incoming). This high pressure causes the………….. part of the blood to filter out from the ………….. into the renal capsule. 

Define the following term : 

Ultrafiltration 

Define the following term : 

Micturition 

Define the following term : 

Renal pelvis 

Define the following term:  

urea 

Define the following term : 

Osmoregulation 

Explain the terms ultrafiltration and selective absorption 

What is dialysis? Under what condition is it carried out? 

Look at the figure given bellow, it is a section of human kidney as seen from the front.  

Is it a longitudinal section or a cross-section?

Look at the figure given below. It is a section of human kidney as seen from the front.

Name the parts numbered 1-5.

Look at the figure given below. It is a section of human kidney as seen from the front.

Which area/part (give its name and number given on the diagram) which contains the following:

(i) Malpighian capsule

(ii) The pyramids

(iii) Freshly collected urine

Given alongside is the figure of certain organs and associated parts in the human body. Study the same and answer the questions that follow:

Name all the organ systems shown completely or even partially.

Given below is the figure of certain organs and associated parts in the human body. Study the same and answer the question that follow:

Name the parts numbered 1 to 5.

Given below is the figure of certain organs and associated parts in the human body. Study the same and answer the question that follow:

Name the structural and functional unit of the part marked '1'.

Given below is the figure of certain organs and associated parts in the human body. Study the same and answer the question that follow:

Name the two main organic constituents of the fluid that flows down the part labeled '3'.

Given below is the figure of certain organs and associated parts in the human body. Study the same and answer the question that follow:

Name the two major steps involved in the formation of the fluid that passes down the part labeled '3'.

The following diagram represents a mammalian kidney tubule (nephron) and its blood supply. 

Parts indicated by the guidelines 1 to 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:

Where does ultrafiltration take place?

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 lowest concentration of urea?

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?

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 (normally) contains the lowest concentration of glucose?

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:

Where is most water reabsorbed ?

Given alongside is a highly simplified (but also somewhat wrong) diagram of the human kidney cut open longitudinally. Answer the question that follow.

Define excretion 

Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:

Name the functional units of the kidneys.

Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:

Why does the cortex of the kidney show a dotted appearance?

Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:

Mention two functions of the kidney.

Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:

Write two differences in composition of the blood flowing through the blood vessels, 'A' and 'B'.

Study the diagram given alongside and then answer the question that follow:

Name the region in the kidney where the above structure is present?

  

Study the diagram given alongside and then answer the question that follow:

Name the parts labelled 1, 2, 3, and 4.

Study the diagram given alongside and then answer the question that follow:

Name the stages involved in the formation of urine.

Study the diagram given alongside and then answer the question that follow:

What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.

The given diagram represents a nephron and its blood supply. Study the diagram and answer the following question :

Label parts 1, 2, 3 and 4.

The given diagram represents a nephron and its blood supply. Study the diagram and answer the following question :   

State the reason for the high hydrostatic pressure in the glomerulus.

The given diagram represents a nephron and its blood supply. Study the diagram and answer the following question :

Name the blood vessel which contains the least amount of urea in this diagram.

The given diagram represents a nephron and its blood supply. Study the diagram and answer the following question : 

Name the two main stages of urine formation.

The given diagram represents a nephron and its blood supply. Study the diagram and answer the following question :

Name the part of the nephron which lies in the renal medulla.