HARD
10th Tamil Nadu Board
IMPORTANT
Earn 100

In a hexaploid wheat (2n = 6x = 42) the haploid (n) and the basic (x) number of chromosomes respectively are

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Important Questions on Breeding and Biotechnology

EASY
10th Tamil Nadu Board
IMPORTANT
Science Standard 10>Chapter 20 - Breeding and Biotechnology>TEXTBOOK EVALUATION>Q 3
_____is the chemical used for doubling the chromosomes.
 
MEDIUM
10th Tamil Nadu Board
IMPORTANT
Science Standard 10>Chapter 20 - Breeding and Biotechnology>TEXTBOOK EVALUATION>Q 4
The scientific process which produces crop plants enriched with desirable nutrients is called_____.
EASY
10th Tamil Nadu Board
IMPORTANT
Science Standard 10>Chapter 20 - Breeding and Biotechnology>TEXTBOOK EVALUATION>Q 5
Rice normally grows well in alluvial soil, but _____ is a rice variety produced by mutation breeding that grows well in saline soil.
EASY
10th Tamil Nadu Board
IMPORTANT
Science Standard 10>Chapter 20 - Breeding and Biotechnology>TEXTBOOK EVALUATION>Q 6
_____ technique made it possible to genetically engineer living organisms.
MEDIUM
10th Tamil Nadu Board
IMPORTANT
Science Standard 10>Chapter 20 - Breeding and Biotechnology>TEXTBOOK EVALUATION>Q 7
Restriction endonucleases cut the DNA molecule at specific positions known as _____.
EASY
10th Tamil Nadu Board
IMPORTANT
Science Standard 10>Chapter 20 - Breeding and Biotechnology>TEXTBOOK EVALUATION>Q 1

State whether it is true or false. If false, write the correct statement:

Raphano brassica is a man-made tetraploid produced by colchicine treatment.

MEDIUM
10th Tamil Nadu Board
IMPORTANT
Science Standard 10>Chapter 20 - Breeding and Biotechnology>TEXTBOOK EVALUATION>Q 2

State whether it is true or false. If false, write the correct statement:

The process of producing an organism with more than two sets of chromosomes is called mutation.

EASY
10th Tamil Nadu Board
IMPORTANT
Science Standard 10>Chapter 20 - Breeding and Biotechnology>TEXTBOOK EVALUATION>Q 3

State whether it is true or false. If false, write the correct statement:

A group of plants produced from single plant through vegetative or asexual reproduction are called a pure line.