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Chapters
1: Cell Cycle and Cell Division
2: Structure of Chromosome
3: Genetics
Unit 2: Plant Physiology
4: Absorption by Roots
5: Transpiration
6: Photosynthesis
7: Chemical Coordination in Plants
Unit 3: Human Anatomy and Physiology
8: Circulatory System
▶ 9: Human Excretory System
Chapter 10: Nervous System
Chapter 11: Sense Organs
Chapter 12: Endocrine System
Chapter 13: Reproductive System
Unit 4: Population
Chapter 14: Population
Unit 5: Human Evolution
Chapter 15: Human Evolution
Unit 6: Pollution
Chapter 16: Pollution
![Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 9 - Human Excretory System - Shaalaa.com](/images/biology-english-class-10-icse_6:7181a54a5d284da8b50dd2f92022a1f6.jpg "Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 9 - Human Excretory System")
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Solutions for Chapter 9: Human Excretory System
Below listed, you can find solutions for Chapter 9 of CISCE Lakhmir Singh for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई.
Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई 9 Human Excretory System Intex Quesions [Pages 143 - 151]
THINK AND ANSWER
Give reason why ammonotelism is found in most aquatic animals while terrestrial animals are ureotelic.
Does being uricotelic act as a flight adaptation in birds?
TEST YOUR UNDERSTANDING -1
True or False.
Carbon dioxide is expelled from sweat glands.
True or False.
Bony fishes excrete nitrogenous waste in the form of uric acid.
True or False.
Human kidneys expel out ammonia, uric acid and urea.
Fill in the Blanks
The process of elimination of metabolic nitrogenous wastes is called ______.
______ secretes the bile pigments, some of which are excreted through urine.
The prime function of sweat glands is ______.
______ are the long tubes which carry urine from the kidney to the urinary bladder.
The opening of the urinary bladder through which the urine is passed out of the body is called ______.
TEST YOUR UNDERSTANDING - 2
True or False.
Kidneys are situated one on either side of the backbone in the thoracic cavity.
True or False.
The medulla region of the kidney is divided into few conical pyramids.
True or False.
Malpighian body consists of glomerulus and Bowman's capsule.
True or False.
Vasa recta forms the tuft of blood capillaries in the glomerulus.
True or False.
The ascending limb of the Henle's loop opens in the collecting duct.
Give One- or Two-Word Answer.
Part of renal tubule which looks like a hairpin.
Give One- or Two-Word Answer:
Another name of Malpighian body.
Give One- or Two-Word Answer:
Blood vessel coming out of glomerulus.
TEST YOUR UNDERSTANDING - 3 Multiple Choice Questions
Which among the following is not a step in urine formation?
Ultrafiltration
Reabsorption
Tubular Secretion
Efferent Arteriole
The factor(s) responsible for ultrafiltration is/are:
Difference in the width of afferent and efferent arteriole
Generation of the hydrostatic pressure
Ureteral peristalsis
Both the difference in the width of afferent and efferent arterioles and the generation of hydrostatic pressure.
The percentage of the constituents in the glomerular filtrate that are reabsorbed is ______.
25%
55%
95%
99%
The step involved in the elimination of the drugs is ______.
Ultrafiltration
Reabsorption
Tubular secretion
Glomerular filtration
Minimum reabsorption and secretion occur in ______.
PCT
DCT
Henle's loop
Collecting duct
TEST YOUR UNDERSTANDING - 4
Give One Word Answer:
Process of regulating body fluids and their composition.
Give One Word Answer:
The brain part responsible for regulation of urine formation.
Give One Word Answer:
Another name for ADH.
Fill in the Blanks
The process of elimination of urine through the urethral opening is called ______.
The excess sugar present in the urine indicates towards a disorder called ______.
______ hormone is secreted from the posterior pituitary to regulate urine formation.
Kidney failure leads to the accumulation of urea in the body leading to a disease called ______.
Artificial kidney helps in removing wastes from the blood by ______.
Solutions for 9: Human Excretory System
Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 9 - Human Excretory System
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