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Chapters
2: Kingdom Animalia
3: Tissue Level of Organisation
4: Organ and Organ Systems in Animals
5: Digestion and Absorption
6: Respiration
7: Body Fluids and Circulation
▶ 8: Excretion
9: Locomotion and Movement
10: Neural Control and Coordination
11: Chemical Coordination and Integration
12: Basic Medical Instruments and Techniques
13: Trends in Economic Zoology
![Samacheer Kalvi solutions for Zoology [English] Class 11 TN Board chapter 8 - Excretion - Shaalaa.com](/images/zoology-english-class-11-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Zoology [English] Class 11 TN Board chapter 8 - Excretion")
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Solutions for Chapter 8: Excretion
Below listed, you can find solutions for Chapter 8 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Zoology [English] Class 11 TN Board.
Samacheer Kalvi solutions for Zoology [English] Class 11 TN Board 8 Excretion Evaluation [Pages 150 - 152]
Arrange the following structures in the order that a drop of water entering the nephron would encounter them.
- Afferent arteriole
- Bowman’s capsule
- Collecting duct
- Distal tubule
- Glomerulus
- Loop of Henle
- Proximal tubule
- Renal pelvis
Name the three filtration barriers that solutes must come across as they move from plasma to the lumen of Bowman’s capsule. What components of the blood are usually excluded by these layers?
What forces promote glomerular filtration? What forces opposes them? What is meant by net filtration pressure?
Identify the following structures and explain their significance in renal physiology?
- Juxtaglomerular apparatus
- Podocytes
- Sphincters in the bladder
In which segment of the nephron most of the re-absorption of substances takes place?
When a molecule or ion is reabsorbed from the lumen of the nephron, where does it go? If a solute is filtered and not reabsorbed from the tubule, where does it go?
Which segment is the site of secretion and regulated reabsorption of ions and pH homeostasis?
What solute is normally present in the body to estimate GFR in humans?
Which part of the autonomic nervous system is involved in micturition process?
If the afferent arteriole of the nephron constricts, what happens to the GFR in that nephron? If the efferent arteriole constricts what happens to the GFR in that nephron? Assume that no auto regulation takes place.
Concentration of urine depends upon which part of the nephron
Bowman’s capsule
Length of Henle’s loop
P.C.T
Network of capillaries arising from glomerulus
If Henle’s loop were absent from mammalian nephron, which one of the following is to be expected?
There will be no urine formation
There will be hardly any change in the quality and quantity of urine formed
The urine will be more concentrated
The urine will be more dilute
What will happen if the stretch receptors of the urinary bladder wall are totally removed?
Micturition will continue
Urine will be continue to collect normally in the bladder
There will be micturition
Urine will not collection the bladder
The end product of Ornithine cycle is ______.
carbon dioxide
uric acid
urea
ammonia
Identify the wrong match
Bowman’s capsule - Glomerular filteration
DCT - Absorption of glucose
Henle’s loop - Concentration of urine
PCT - Absorption of Na+ and K+ ions
Podocytes are the cells present on the ______.
Outer wall of Bowman’s capsule
Inner wall of Bowman’s capsule
Neck of nephron
Wall glomerular capillaries
Glomerular filtrate contains ______.
Blood without blood cells and proteins
Plasma without sugar
Blood with proteins but without cells
Blood without urea
Kidney stones are produced due to deposition of uric acid and ______.
silicates
minerals
calcium carbonate
calcium oxalate
Animal requiring minimum amount of water to produce urine are ______.
ureotelic
ammonotelic
uricotelic
chemotelic
Aldosterone acts at the distal convoluted tubule and collecting duct resulting in the absorption of water through ______.
Aquaphorins
spectrins
GLUT
Chloride channels
The hormone which helps in the reabsorption of water in kidney tubules is ______.
cholecystokinin
angiotensin II
antidiuretic hormone
pancreozymin
Malpighian tubules remove excretory products from ______.
mouth
oesophagus
haemolymph
alimentary canal.
Identify the biological term
A liquid which gathers in the bladder.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
Produced when blood is filtered in a Bowman’s capsule.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identfiy the biological term
Temporary storage of urine.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
A ball of inter twined capillaries.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
Removal of unwanted substances from the body.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
Each contains a glomerulus.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
Carry urine from the kidneys to the bladder.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
Scientific term for urination.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
Regulation of water and dissolved substances in blood and tissue fluid.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
Consists of the kidneys, ureters and bladder.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
Removal of useful substances from glomerular filtrate.
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
Identify the biological term
What solute the blood contains that are not present in the glomerular filtrate?
Excretion
glomerulus
urinary bladder
glomerular filtrate
ureters
urine
Bowman’s capsule
urinary system
reabsorption
micturition
osmosis
proteins
With regards to toxicity and the need for dilution in water, how different are ureotelic and uricotelic excretions? Give examples of animals that use these types of excretion?
Differentiate protonephridia from metanephridia.
What is the nitrogenous waste produced by amphibian larvae and by the adult animal?
How is urea formed in the human body?
Differentiate cortical from medullary nephrons.
What vessels carry blood to the kidneys? Is this blood arterial or venous?
Which vessels drain filtered blood from the kidneys?
What is tubular secretion? Name the substances secreted through the renal tubules.
How are the kidneys involved in controlling blood volume? How is the volume of blood in the body related to arterial pressure?
Name the three main hormones involved in the regulation of the renal function?
What is the function of antidiuretic hormone? Where is it produced and what stimuli increases or decreases its secretion?
What is the effect of aldosterone on kidneys and where is it produced?
Explain the heart’s role in secreting a hormone that regulates renal function? What hormone is this?
Solutions for 8: Excretion
Samacheer Kalvi solutions for Zoology [English] Class 11 TN Board chapter 8 - Excretion
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Concepts covered in Zoology [English] Class 11 TN Board chapter 8 Excretion are Modes of Excretion: Ammonotelism, Ureotelism, and Uricotelism, Human Excretory System, Function of the Kidney - “Production of Urine”, Regulation of Kidney Function, Micturition, Accessory Excretory Organs, Haemodialysis, Common Disorders of the Urinary System.
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