MCQ
Fertilization is depicted by the condition
- ✓$n \to 2n$
- B$2n \to 3n$
- C$2n \to 4n$
- D$4n \to 8n$
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$I.$ Antibiotics are chemical substances produced by some microorganisms which can kill or retard the growth of other disease-causing microorganisms
$II.$ Penicillin is the first antibiotic discovered by Alexander Fleming $(1928),$ while working on bacterium Staphylococcusaureus
$III.$ The function of penicillin as an antibiotic was established by Ernst chain and Howard Florey
Which of the statement given above are correct?
- They attack insects and other arthropods.