Question

Live cultures of Bacillus thuringiensis are sold as pesticides. What bacterial structure makes it possible to package the product?

		spore
		glycocalyx
		endospore
		pilin
		peptidoglycan

Answer 1

Live cultures of Bacillus thuringiensis are sold as pesticides. Bacterial structure makes it possible to package the product is-

Spore.

The leading biorational pesticide, Bacillus thuringiensis is a ubiquitous gram-positive, spore-forming bacterium that forms a parasporal crystal during the stationary phase of its growth cycle.It is characterized as an insect pathogen, and its insecticidal activity was attributed largely or completely (depending on the insect) to the parasporal crystals. During sporulation, Bacillus strains produce crystal proteins (proteinaceous inclusions), called δ-endotoxins, that have insecticidal action. This has led to their use as insecticide.