The most likely reason for the development of resistance against pesticides in insect damaging a crop is
The pesticide causes mutations in the insects that make them resistant.
Some insects have genes that make them resistant to the pesticide, and these genes are passed on to their offspring.
The insects learn to avoid areas where the pesticide has been applied.
The pesticide strengthens the insects' immune systems, making them resistant.
Related Questions
RNA interference (RNAi) technology is used in agriculture for:
Increasing nutrient uptake
Enhancing photosynthesis
Pest control
Improving drought tolerance
In plant tissue culture, the property that allows a single cell to give rise to a whole plant is:
Apomixis
Parthenocarpy
Totipotency
Polyembryony
Which technique is LEAST suitable for introducing a foreign gene into a mature plant cell with a thick cell wall?
Biolistics
Agrobacterium-mediated transformation
Microinjection
Heat shock transformation
Golden rice was developed to address the deficiency of which vitamin?
Vitamin A
Vitamin B12
Vitamin C
Vitamin K
Farmers observe characteristic galls on the tobacco plant roots. Which of the following organisms is the most likely cause of this symptom?
Root-knot nematodes
Tobacco mosaic virus
Aphids
Fungal pathogens
What is the primary advantage of growing Bt cotton compared to conventional cotton?
Increased water requirement
Higher fertilizer demand
Enhanced susceptibility to other pests
Reduced insecticide use
A scientist is attempting to develop a transgenic crop resistant to a specific lepidopteran pest. Which gene would be the LEAST suitable candidate for transfer?
A gene encoding a Bt toxin
A gene conferring resistance to a bacterial pathogen
A gene involved in photosynthesis
A gene encoding a protein that disrupts insect gut function
A tobacco farmer notices stunted growth and reduced yield in his crop. Upon inspection, he finds knots on the roots of the plants. What is the most probable cause of this issue?
Viral infection of the leaves
Fungal infection of the stem
Root-knot nematode infection
Nutrient deficiency in the soil
Which combination of technologies is MOST likely to be employed in developing a 'Golden Rice' variety with enhanced iron bioavailability?
Phytoene synthase gene transfer, Lycopene beta-cyclase gene transfer
Ferritin gene transfer, Phytase gene transfer
Cry gene transfer, Proteinase inhibitor gene transfer
Viral coat protein gene transfer, Chitinase gene transfer
Why doesn't the Bt toxin produced by Bacillus thuringiensis harm the bacterium itself?
The bacterium has a special enzyme that degrades the toxin.
The bacterium's cell wall is impermeable to the toxin.
It exists as an inactive protoxin within the bacterium.
The bacterium produces an antitoxin that neutralizes the Bt toxin.
