Astronauts may use which technique to grow fruits and vegetables ?
(A) Tissue culture techniques
(B) Cloning
(C) Pasterisation
(D) Hydroponic culture technique
Production of genetically identical copies of organisms/cells by asexula reproduction is called ?
(A) Mitosis
(B) Replication
(C) Cloning
(D) Biological control
Breeders have developed new and better varieties of food items by using which technique?
(A) Pasteurization
(B) Hydroponic culture technique
(C) Genetic engineering
(D) Biological control techniques
Conclusion of Mendels work latter became a_____________?
(A) Scientific hypothesis
(B) Theory
(C) Scientific law
(D) Productive theory
Which one is not correct for a productive theory?
(A) It is predictive
(B) It has explanatory power
(C) It discourages suggestion of different hypotheses
(D) None of these
Which are the four most abundant elements in living cells ?
(A) carbon, oxygen, nitrogen, sulfur
(B) carbon, oxygen, hydrogen, nitrogen
(C) carbon, oxygen, sulfur, phosphorus
(D) carbon, sulfur, hydrogen, magnesium