11th Standard Syllabus & Materials
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TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 24/08/2026
Download Tamil Nadu 11th Standard Biology 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 Biology Test
1.
State whether the statement is true or false
To sustain themselves, earthworms must guide their way through the soil using their powerful muscles. They gather nutrients by ingesting organic matter and soil, absorbing what they need into their bodies.The two ends of the earthworm can equally ingest soil.
True
False
2.
3.
During synaptic transmission of nerve impulse, neurotransmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct P and Q.
P = Acetylcholine, Q = Ca++
P = Acetylcholine, Q =Na+
P = GABA, Q = Na+
P = Cholinesterase, Q = Ca++
4.
Hypersecretion of GH in children leads to _____.
Cretinism
Gigantism
Graves disease
Tetany
5.
Which of the following hormone is not secreted under the influence of pituitary gland?
Thyroxine
Insulin
Oestrogen
Glucocorticoids
6.
Isinglass is used in _____.
Preparation
Clearing of wines
Distillation of wines
Preservation of wines
7.
Which of the statement regarding Lac insect is TRUE?
A microscopic, resinous crawling scale insect
Inserts its proboscis into plant tissue suck juices and grows
Secretes lac from the hind end of body.
The male lac insect is responsible for large scale production of lac.
8.
The pointed portion of the elbow is ______.
acromion process
glenoid cavity
olecranon process
symphysis
9.
The protein present in the thick filament is _____.
myosin
actin
pectin
leucine
10.
Muscles are formed by ____.
myocytes
leucocytes
osteocytes
lymphocytes
11.
Vital capacity is _____.
TV + IRV
TV + ERV
RV + ERV
TV + IRV + ERV
12.
13.
Intercostal muscles are found between the ______.
vertebral column
sternum
ribs
glottis
14.
15.
16.
Which of the following is not true regarding intestinal villi?
They possess microvilli.
They increase the surface area.
They are supplied with capillaries and the lacteal vessels
They only participate in digestion of fats.
17.
Which of the following is not the function of liver?
Production of insulin
Detoxification
Storage of glycogen
Production of bile
18.
Which one is incorrectly matched?
Pepsin - Stomach
Renin -Liver
Trypsin - Intestine
Ptyalin - Mouth
19.
20.
Which of the following is not involved in blood clotting?
Fibrin
Calcium
Platelets
Bilirubin
21.
Kidney of frog is _____.
Archinephros
Pronephros
Mesonephros
Metanephros
22.
The type of vision in Cockroach is ______.
Three dimensional
Two dimensional
Mosaic
Cockroach do not have vision
23.
24.
Prevention of substances from leaking across the tissue is provided by ______.
Tight junction
Adhering junction
Gap junction
Elastic junction
25.
The ciliated epithelium lines the _______.
Skin
Digestive tract
Gall bladder
Trachea
26.
Which of the following is a crustacean?
Prawn
Snail
Sea anemone
Hydra
27.
28.
The excretory cells that are found in platyhelminthes are _____.
Protonephridia
Flame cells
Solenocytes
All of these
29.
What taxonomic aid gives comprehensive information about a taxon?
Taxonomic Key
Herbarium
Flora
Monograph
30.
1.
(b)
False
2.
(c)
3.
(a)
P = Acetylcholine, Q = Ca++
4.
(b)
Gigantism
5.
(b)
Insulin
6.
(b)
Clearing of wines
7.
(d)
The male lac insect is responsible for large scale production of lac.
8.
(c)
olecranon process
9.
(a)
myosin
10.
(a)
myocytes
11.
(d)
TV + IRV + ERV
12.
(c)
13.
(c)
ribs
14.
(c)
15.
(a)
16.
(d)
They only participate in digestion of fats.
17.
(a)
Production of insulin
18.
(b)
Renin -Liver
19.
(c)
20.
(d)
Bilirubin
21.
(c)
Mesonephros
22.
(c)
Mosaic
23.
(b)
24.
(a)
Tight junction
25.
(d)
Trachea
26.
(a)
Prawn
27.
(a)
28.
(b)
Flame cells
29.
(a)
Taxonomic Key
30.
(a)
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 11th Standard Subjects
Maths
Commerce
Economics
Biology
Business Maths and Statistics
Accountancy
Computer Science
Physics
Chemistry
Maths
Biology
Economics
Physics
Chemistry
History
Business Maths and Statistics
Computer Science
Accountancy
Computer Applications
History
Computer Technology
Commerce
Computer Applications
Computer Technology
Tamil
English
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Tamilnadu Stateboard Standards
