Answer:The answer is (c)
Simple yes/no question s is not a quality of a productive discussion.
Explanation:Productive discussion is one which motivates the students and create opportunities for them to participate ,practice and sharpen their various skills.Large number of factors are taken into consideration while planning a discussion .But simple yes/no question cannot make our discussion productive.We can start a discussion with yes/no questions only if any particular question has follow question that requires explanation.
Otherwise simple yes /no question will become discussion stopper.it will badly influence the discussion.It makes the discussion monotonous.Listeners loose their interest.
Discussion provides an opportunity to students to explore new things.A detailed discussion will enable students to clear their doubts and get answers for their queries ,but if we limit our discussion to simple yes/no question then it will limit the ability of students to learn anything new from that discussion.Their knowledge will remain stable and it will not enhance .There will be no benefit of that discussion.
Answer:
there is no option but idiom is an expression or phrases whose meaning doesn't relate to literal meaning of it words
<span>Selective media are used for the growth of only selected microorganisms. For example, if a microorganism is resistant to a certain antibiotic, such as ampicillin or tetracycline, then that antibiotic can be added to the medium in order to prevent other cells, which do not possess the resistance, from growing. Media lacking an amino acid such as proline in conjunction with E. coli unable to synthesize it were commonly used by geneticists before the emergence of genomics to map bacterial chromosomes.</span>
