Download App

Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMicrobes in Human Welfare1 Mark
MCQ
Pyrethrin is a common ingredient of:
  • A
    Mosquito coils
  • B
    Fly sprays
  • C
    Mosquito mats
  • D
    All of the above
✓

Answer

  1. All of the above

Explanation:

Pyrethrin is an ingredient insecticide prepared from pyrethrum flowers which include daisies and chrysanthemums. Pyrethrins act against a wide range of pests from flies and gnats to ticks and lice. It is widely used as a mosquito controlling agent. They affect the nervous system of these arthropods and sometimes causing them to leave before they finish feeding. 

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (0.5 Marks)" from Microbes in Human Welfare→Microbes in Human Welfare — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

The free-living fungus Trichoderma can be used for:
→
If the age distribution (per cent individuals of a given age or group) is plotted for the population, the resulting structure is called a/ an.
→
How many different types of gametes canbe formed by ${F_1}$ progeny, resulting from the following cross: $AA BB CC × aa bb cc$
→
Most famous nitrogen fixing bacterium/biofertilizer is
→
Which one of the following represents a pal- indromic sequence in DNA?
→
Which of the following was discovered in Ethiopia and Tanzania?
→
Gametogenesis is the formation of
→
Which type of protein is found in silk thread?
→
The scientists who were succeded in isolating antibiotic resistant gene from a plasmid for the first time:
→
$VAM $ is
→