TN State Board Samacheer Kalvi Online Test for 10th Std - Science - English - Breeding And Biotechnology

Question 1 Of 10

Which of the following is used to produce products useful to humans by biotechnology techniques?

enzyme from organism live organism vitamins both (a) and (b)

Question 2 Of 10

rDNA is a _____

vector DNA circular DNA Recombinant of vector DNA and desired DNA llite DNA

Question 3 Of 10

We can cut the DNA with the help of ______

scissors Restriction endonucleases knife RNAase

Question 4 Of 10

Which method of crop improvement can be practised by a farmer if he is inexperienced?

clonal selection Mass selection pure line selection hybridisation

Question 5 Of 10

Organisms with modified endogenous gene or a foregin gene are also known as

transgenic organsims genetically modified mutated both a and b

Question 6 Of 10

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

n = 7 and x = 21 n = 21 and x = 21 n = 7 and x = 7 21 and x = 7

Question 7 Of 10

DNA fingerprinting is based on the principle of identifying sequences of DNA

single stranded mutated polymorphic satellite DNA

Question 8 Of 10

Himgiri developed by hybridization and selection for disease resistance against rust pathogens is a variety of ________.

chili maize sugarcane wheat

Question 9 Of 10

Pusa Komal is a disease-resistant variety of _______.

sugarcane rice Cowpea maize

Question 10 Of 10

The miracle rice which saved millions of lives and celebrated its 50th birthday is ______.

IR 8 IR 24 Atomita 2 Ponni

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 10th Standard Science - English Medium - Breeding And Biotechnology

Samacheer Kalvi 10th Science - Breeding And Biotechnology - Book Back Questions in English Medium