12th Standard Syllabus & Materials
12th Standard
TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications மின் - வணிக பாதுகாப்பு அமைப்புகள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications மின்னணு செலுத்தல் முறைகள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications மின் - வணிகம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications திறந்த மூல கருத்துருக்கள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications வலையமைப்பு வடமிடல் Sample Question Papers Study Material - QB365 Set A
Published on: 05/11/2020
12th Standard Biology English Medium Free Online Test Book Back One Mark Questions
Download Tamil Nadu 12th 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 Test1.
Colostrum provides
Naturally acquired active immunity
Naturally acquired passive immunity
Artificially acquired active immunity
Artificially acquired passive immunity
2.
Consider the following statements and choose the right option.
i) Cereals are members of grass family.
ii) Most of the food grains come from monocotyledon.
(i) is correct and (ii) is wrong
Both (i) and (ii) are correct
(i) is wrong and (ii) is correct
Both (i) and (ii) are wrong
3.
Progeny obtained as a result of repeat self pollination a cross pollinated crop to called
pure line
pedigree line
inbreed line
heterosis
4.
5.
Which of the following ecosystem has the highest primary productivity?
Pond ecosystem
Lake ecosystem
Grassland ecosystem
Forest ecosystem
6.
A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern Azolla ______.
Nostoc
Anabaena
chlorella
Rhizobium
7.
Transgenic animals are those which have
Foreign DNA in some of their cells
Foreign DNA in all their cells
Foreign RNA in some of their cells
Foreign RNA in all their cells
8.
Which of the following one is used as a Biosensors?
Electrophoresis
Bioreactors
Vectors
Electroporation
9.
The point mutation sequence for transition, transition, transversion and transversion in DNA are ______.
A to T, T to A, C to G and G to C
A to G, C to T, C to G and T to A
C to G, A to G, T to A and G to A
G to C, A to T, T to A and C to G
1.
(b)
Naturally acquired passive immunity
2.
(b)
Both (i) and (ii) are correct
3.
(a)
pure line
4.
(d)
5.
(d)
Forest ecosystem
6.
(b)
Anabaena
7.
(b)
Foreign DNA in all their cells
8.
(a)
Electrophoresis
9.
(b)
A to G, C to T, C to G and T to A
12th Standard Syllabus & Materials
12th Standard
TN 12th Computer Applications களப்பெயர் முறைமை (DNS) Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications வலையமைப்பு எடுத்துக்காட்டுகள் மற்றும் நெறிமுறைகள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications கணினி வலையமைப்பு ஓர் அறிமுகம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications PHP-உடன் MySQL-ஐ இணைத்தல் Sample Question Papers Study Material - QB365 Set A
Tamilnadu Stateboard 12th Standard Subjects
Maths
Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
Economics
Maths
Chemistry
Physics
Computer Technology
History
Accountancy
Tamil
English
French
Tamilnadu Stateboard Standards
