9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கற்கண்டு (இலக்கணம்) - தொடர் இலக்கணம், ஆகுபெயர் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -விரிவானம் (துணைப்பாடம்) - தாய்மைக்கு வறட்சி இல்லை! Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கவிதை பேழை (செய்யுள்) - மார்கழி பெருவிழா Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உயிருக்கு வேர்-இலக்கணம் - பகுபத உறுப்பிலக்கணம் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர் - இலக்கணம்-எழுத்து -அளபெடை Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர்-துணைப்பாடம் - ஆறாம்திணை Important Questions And Answers Study Material - QB365 Set A

Published on: 25/09/2019
Term 2 Organ Systems in Animals
Download Tamil Nadu 9th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
What is parturition?
2.
What is the contribution of Joseph Murray in Nephrology?
3.
What is vermiform appendix?
4.
What is succus entericus?
5.
What are Islets of Langerhans?
6.
What is heparin?
7.
Name the bile pigments.
8.
Name the bile salts.
9.
What are villi?
10.
How is it possible to control the urge to pass urine?
11.
State any two vital functions of human kidney.
12.
Why do we sweat?
13.
How is the small intestine designed to absorb digested food?
14.
The stomach secretes gastric juice, which contains hydrochloric acid. What is its function?
15.
Arrange the following five steps of nutrition in correct sequence: (digestion, assimilation, ingestion, egestion, absorption)
1.
Child birth is called parturition
2.
He performed the first successful kidney transplant operation.
3.
It is a finger-like structure originating from the blind end of the caecum in the alimentary canal of man. It is a vestigial organ
4.
The intestinal glands secrete intestinal juice called succus entericus which contains enzymes like maltase, lactase, sucrase, lipase etc.
5.
The endocrine cells of the pancreas are known as Islets of Langerhans and they produce the hormones - Insulin and glucagon.
6.
It is an anticoagulant produced by the liver.
7.
Bilirubin and Biliverdin
8.
Sodium glycolate and sodium tauraglycolate
9.
Ileum is the longest part of the small intestine. It contains minute finger-like projections called villi. They help in absorption of food.
10.
Urine is stored in the urinary bladder and expelled through an opening called urethra. This opening is guarded by sphincter muscles. When these muscles relax, urine is expelled out and this process is called micturition. The sphincter muscle control is voluntary in an adult.
11.
1. Maintain the fluid and electrolytes balance in our body.
2. Regulate acid-base balance of blood.
3. Maintain the osmotic pressure in blood and tissues.
4. Help to retain the important plasma constituents like glucose and amino acids.
12.
The human body functions normally at a temperature of about 37°C. When it gets hot sweat glands start secreting sweat, which contains water with small amounts of other chemicals like ammonia, urea, lactic acid and salts (mainly sodium chloride). The sweat passes through the pores in the skin and gets evaporated which reduces the body temperature.
13.
Small intestine comprises of three parts.
i) Duodenum
ii) Jejunum
iii) Ileum
Ileum contain minute finger like projection called villi. It is one millimetre in length. Absorption of food takes place here. In this way digested food is absorbed by ileum.
14.
(i) Hydrochloric acid kills the bacteria swallowed with food.
(ii) It makes the medium acidic for the action of gastric enzymes
15.
ingestion, digestion, absorption, assimilation, egestion
9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
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NEW9th Standard
TN 9th Tamil உயிருக்கு வேர் - தண்ணீர் Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 9th Standard Subjects
Tamilnadu Stateboard Standards