12th Standard Syllabus & Materials
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Published on: 26/08/2022
QB365 provides a detailed and simple solution for every Possible Creative Questions in Class 12 Biology Subject - Zoology - Principles of Inheritance and Variation, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
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.
__________ was first reported by John Cotto.
Erythroblastosis foetalis
Haemophilia
Colour blindness
Haplodiploidy
2.
Y chromosomes was discovered by ________.
Stevens
Landsteiner
Henking
Wiener
3.
X chromosomes was discovered by _________.
Landsteiner
Henking
Stevens
Bridges
4.
Sex index is applicable to ________.
Homogenetic condition
Heterogametic condition
Genic balance
Gynandromorphs
5.
The ZW - ZZ type of sex determination is seen ________.
Butterflies
Drosophila
Gypsy moth
Human being
6.
The ZO - ZZ type of sex determination is seen is _______.
moths
Reptiles
Human beings
Bugs
7.
The lygaeus type (XX - XY) type of sex determination is seen in ______
Fishes
Chickens
Human beings
Gypsy moth
8.
XX - XO type of sex determination is in ______.
Cockroaches
Drosophila
Humans
Moths
9.
_________ proposed the existence of 8 alleles at a single Rh locus.
Fischer
Landsteiner
Bernstein
Wiener
10.
The secretors have the I allele in _______.
tears
Gastric juice
Saliva
All of these
11.
The__________ is called null allele.
IA
IOIB
IO
IBIB
12.
The inheritance of blood group is determined by multiple alleles as discovered by _________.
Landsteiner
Bernstein
Alexander castelle
lyon
13.
The ABO blood group was discovered by ________.
Sturli
Decastelle
Landsteiner
Alexander wiener
14.
The blood group _________ is called universal recipient.
O
AB
B
A
15.
The blood group _________ is called universal donor.
A
AB
B
O
1.
(b)
Haemophilia
2.
(a)
Stevens
3.
(b)
Henking
4.
(c)
Genic balance
5.
(c)
Gypsy moth
6.
(a)
moths
7.
(c)
Human beings
8.
(a)
Cockroaches
9.
(d)
Wiener
10.
(d)
All of these
11.
(c)
IO
12.
(b)
Bernstein
13.
(c)
Landsteiner
14.
(b)
AB
15.
(d)
O
12th Standard Syllabus & Materials
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Tamilnadu Stateboard 12th Standard Subjects
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Physics
Biology
Computer Science
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Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
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Computer Science
Business Maths and Statistics
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Maths
Chemistry
Physics
Computer Technology
History
Accountancy
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