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Chapters
2: Motion
3: Fluids
4: Electric charge and Electric current
5: Magnetism and Electromagnetism
6: Light
7: Heat
8: Sound
9: Universe
10: Matter Around Us
11: Atomic Structure
12: Periodic Classification of Elements
13: Chemical Bonding
14: Acids, Bases and Salts
15: Carbon and its Compounds
16: Applied Chemistry
17: Animal Kingdom
18: Organisation of Tissues
19: Plant Physiology
▶ 20: Organ Systems in Animals
21: Nutrition and Health
22: World of Microbes
23: Economic Biology
24: Environmental Science
25: Computer – LibreOffice Impress
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Solutions for Chapter 20: Organ Systems in Animals
Below listed, you can find solutions for Chapter 20 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Science [English] Class 9 TN Board.
Samacheer Kalvi solutions for Science [English] Class 9 TN Board 20 Organ Systems in Animals Exercise [Pages 244 - 245]
Choose the correct answer.
Which of the following is not a salivary gland?
Sublingual
Lachrymal
Submaxillary
Parotid
Stomach of human beings mainly digests ______.
carbohydrates
proteins
fat
sucrose
To prevent the entry of food into the trachea, the opening is guarded by ______.
epiglottis
glottis
hard palate
soft palate
Bile helps in the digestion of ______.
proteins
sugar
fats
carbohydrates
The structural and functional unit of the kidney is ______.
villi
liver
nephron
ureter
Neuron
Nerve
Glomerulus
Which one of the following substance is not a constituent of sweat?
Urea
Protein
Water
Salt
The common passage meant for transporting urine and sperms in male is ______.
ureter
urethra
vas deferens
scrotum
Which of the following is not a part of female reproductive system?
Ovary
Uterus
Testes
Fallopian tube
Fill in the blanks.
The opening of the stomach into the intestine is called ______.
The muscular and sensory organ which helps in mixing the food with saliva is ______.
Bile, secreted by liver is stored temporarily in ______.
The longest part of alimentary canal is ______.
The human body functions normally at a temperature of about _____
The largest cell in the human body of a female is ______.
State whether true or false. If false, correct the statement.
Nitric acid in the stomach kills microorganisms in the food.
True
False
State whether true or false. If false, correct the statement.
During digestion, proteins are broken down into amino acids.
True
False
State whether true or false. If false, correct the statement.
Glomerular filtrate consists of many substances like amino acids, vitamins, hormones, salts, glucose and other essential substances.
True
False
Match the following.
| Organ | Elimination | |
| Skin | a. | Urine |
| Lungs | b. | Sweat |
| Intestine | c. | Carbon dioxide |
| Kidneys | d. | Undigested food |
Differentiate the following.
Excretion and Secretion
Differentiate the following.
Absorption and Assimilation
Differentiate the following.
Ingestion and Egestion
Differentiate the following.
Diphyodont and Heterodont
Differentiate the following.
Incisors and Canines
Answer briefly
How is the small intestine designed to absorb digested food?
Why do we sweat?
Mention any two vital functions of human kidney
What is micturition?
Name the types of teeth present in an adult human being. Mention the functions of each.
Explain the structure of nephron.
Answer in datail.
Describe the alimentary canal of man
Explain the structure of kidney and the steps involved in the formation of urine
Assertion and reason type questions.
Assertion: Urea is excreted out through the kidneys.
Reason: Urea is a toxic substance.
If both Assertion and Reason are true and Reason is the correct explanation of Assertion
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
If Assertion is true but Reason is false.
If both Assertion and Reason are false.
Assertion: In both the sexes gonads perform dual function.
Reason: Gonads are also called primary sex organs.
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
If Assertion is true but Reason is false.
If both Assertion and Reason are false.
Higher Order Thinking Skill
If pepsin is lacking in gastric juice, then which event in the stomach will be affected?
digestion of starch into sugars.
breaking of proteins into peptides.
digestion of nucleic acids.
breaking of fats into glycerol and fatty acids.
Higher Order Thinking Skill
Name the blood vessel that
- enter malphigian capsule and
- leaves malphigian capsule.
Higher Order Thinking Skill
Why do you think that urine analysis is an important part of medical diagnosis?
Higher Order Thinking Skill
Why your doctor advises you to drink plenty of water?
Higher Order Thinking Skill
Can you guess why there are sweat glands on the palm of our hands and the soles of our feet?
Match the parts of the given figure with the correct option.
| 1 | 2 | 3 | 4 | 5 | |
| a. | Fallopian tube | Oviduct | Uterus | Cervix | Vagina |
| b. | Oviduct | Cervix | Vagina | Ovary | Vas deferens |
| c. | Ovary | Oviduct | Uterus | Vagina | Cervix |
| d. | Fallopian tube | Ovary | Cervix | Uterus | Vagina |
Solutions for 20: Organ Systems in Animals
Samacheer Kalvi solutions for Science [English] Class 9 TN Board chapter 20 - Organ Systems in Animals
Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Science [English] Class 9 TN Board Tamil Nadu Board of Secondary Education solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Samacheer Kalvi solutions for Mathematics Science [English] Class 9 TN Board Tamil Nadu Board of Secondary Education 20 (Organ Systems in Animals) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. Samacheer Kalvi textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Science [English] Class 9 TN Board chapter 20 Organ Systems in Animals are Human Organ System, Human Digestive System, The Mouth and Buccal Cavity, The Teeth and Its Structure, The Salivary Glands, Tongue, Swallowing and Peristalsis, The Food Pipe/Oesophagus, The Stomach, The Small Intestine, Pancreas, Liver, Absorption of Food, Assimilation of Food, The Large Intestine, Human Excretory System, Accessory Excretory Organs, Kidney and Its Internal Structure, Kidney Tubule (Nephrons), Function of the Kidney - “Production of Urine”, Human Reproduction, The Male Reproductive System, The Female Reproductive System, Dialysis and Artificial Kidney.
Using Samacheer Kalvi Science [English] Class 9 TN Board solutions Organ Systems in Animals exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Science [English] Class 9 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
Get the free view of Chapter 20, Organ Systems in Animals Science [English] Class 9 TN Board additional questions for Mathematics Science [English] Class 9 TN Board Tamil Nadu Board of Secondary Education, and you can use Shaalaa.com to keep it handy for your exam preparation.
