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Chapter 20: Breeding and Biotechnology
- Online Test
Chapter 20: Breeding and Biotechnology
TEST : 1
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q1.
Which method of crop improvement can be practised by a farmer if he is inexperienced?
A.
clonal selection
B.
mass selection
C.
pureline selection
D.
hybridisation
View Solution
Add Work Space
Answer :
Option B
Explaination / Solution:
No Explaination.
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q2.
Pusa Komal is a disease resistant variety of _________.
A.
sugarcane
B.
rice
C.
cow pea
D.
maize
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q3.
Himgiri developed by hybridisation and selection for disease resistance against rust pathogens is a variety of __________.
A.
chilli
B.
maize
C.
sugarcane
D.
wheat
View Solution
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Answer :
Option D
Explaination / Solution:
No Explaination.
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q4.
The miracle rice which saved millions of lives and celebrated its 50th birthday is _______
A.
IR 8
B.
IR 24
C.
Atomita 2
D.
Ponni
View Solution
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Answer :
Option A
Explaination / Solution:
No Explaination.
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q5.
Which of the following is used to produce products useful to humans by biotechnology techniques?
A.
enzyme from organism
B.
live organism
C.
vitamins
D.
both (a) and (b)
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q6.
We can cut the DNA with the help of
A.
scissors
B.
restriction endonucleases
C.
knife
D.
RNAase
View Solution
Add Work Space
Answer :
Option B
Explaination / Solution:
No Explaination.
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q7.
rDNA is a
A.
vector DNA
B.
circular DNA
C.
recombinant of vector DNA and desired DNA
D.
satellite DNA
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q8.
DNA fingerprinting is based on the principle of identifying --------------- sequences of DNA
A.
single stranded
B.
mutated
C.
polymorphic
D.
repetitive
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q9.
Organisms with modified endogenous gene or a foregin gene are also known as
A.
transgenic organsims
B.
genetically modified
C.
mutated
D.
both a and b
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
# Chapter 20: Breeding and Biotechnology
# TN 10th Science
Prepare / Learn
Q10.
In a hexaploid wheat( 2n = 6 x = 42 ) the haploid (n) and the basic(x) number of chromosomes respectively are
A.
n = 7 and x = 21
B.
n = 21 and x = 21
C.
n = 7 and x = 7
D.
n = 21 and x = 7
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
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