12th Standard Syllabus & Materials
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TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A
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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 Creative One Mark Questions with Answer Key - Part Three
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.
The RNA polymerase of prokaryotes binds with ____________ factor to initiate polymerization.
rho
theta
sigma
psi
2.
Species introduced deliberately in an area are referred as_______
Endemic species
Vulnerable species
Exotic species
Extinct species
3.
Which of the following is a hormone releasing Intrauterine Device (IUD)?
Multi load 375
LNG - 20
Cervical cap
Vault
4.
Which one of the following is not the function of placenta?
To facilitate supply of oxygen and nutrients to embryo
To secrete oestrogen
To facilitate the removal of carbondi oxide and material from embryo
To secrete oxytocin during parturition
5.
A few statements with regard to sexual reproduction are given below:
i. Sexual reproduction does not always require two individuals
ii. Sexual reproduction generally involves gametic fusion
iii. Meiosis never occurs during sexual reproduction
iv. External fertilization is a rule during sexual reproduction
Choose the correct statements from the options below:
i and iv
i and ii
ii and iii
i and iv
6.
The incubation period for _____ varies between 1-8 months.
HPV
HIV
HBV
candida
7.
Each testis is covered by a fibrous layer _____
tubulus rectus
corona radiata
vitelline membrane
tunica albuginea
8.
The enzyme polynucleotide phosphorylase is named after ___________.
Francis crick
Severo Ochoa
Marshall Nirenby
Kornby
9.
Conjugation is seen in _____
Vorticella
Amoeba
Reptiles
Actinosphaerium
10.
The allele Io is called _______
Dominant allele
multiple allele
null allele
epistatic allele
1.
(c)
sigma
2.
(c)
Exotic species
3.
(b)
LNG - 20
4.
(d)
To secrete oxytocin during parturition
5.
(d)
i and iv
6.
(a)
HPV
7.
(d)
tunica albuginea
8.
(b)
Severo Ochoa
9.
(a)
Vorticella
10.
(b)
multiple allele
12th Standard Syllabus & Materials
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TN 12th Computer Applications கணினி வலையமைப்பு ஓர் அறிமுகம் Sample Question Papers Study Material - QB365 Set A
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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
