Which of the following is a benefit of using biopesticides over chemical pesticides? MCQ with Answer and Explanation

Which of the following is a benefit of using biopesticides over chemical pesticides?
A. They are broad-spectrum and kill all insects.
B. They are target-specific and environmentally friendly.
C. They increase soil salinity.
D. They are non-biodegradable and persist in the environment.
Answer: Option B
Solution (By JKExamLibrary)
Biopesticides, such as Bacillus thuringiensis (Bt), neem extracts, and Trichoderma, are generally target-specific, affecting only certain pests while sparing beneficial organisms, humans, and the environment. They are biodegradable and do not accumulate. Chemical pesticides often kill a wide range of species, persist, and cause pollution. Biopesticides are key in Integrated Pest Management (IPM).

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Practice More Biology Questions

Question #1
Which of the following statements about biotechnology is correct?
A. Bt cotton is resistant to all pesticides.
B. Restriction enzymes join DNA fragments.
C. Plasmids are used as vectors because they can replicate independently.
D. Tissue culture produces genetically diverse plants.

Correct Answer: Option C


Explanation:
Plasmids have an origin of replication, making them effective cloning vectors. Restriction enzymes cut DNA, tissue culture produces clones, Bt cotton targets specific insects.

This question belongs to: Science Biology
Question #2
The symbiotic relationship between fungi and algae in lichens is an example of:
A. Commensalism
B. Predation
C. Parasitism
D. Mutualism

Correct Answer: Option D


Explanation:
Lichens represent mutualism where the fungal partner provides shelter, water, and minerals, and the algal or cyanobacterial partner provides food through photosynthesis. Both benefit. Parasitism is harmful to host; commensalism benefits one without affecting the other; predation involves one killing and eating the other. Lichens are bioindicators of air pollution, sensitive to SO₂. This association is obligate.

This question belongs to: Science Biology
Question #3
The process by which traits are transferred from parents to offspring is:
A. Mutation
B. Heredity
C. Variation
D. Evolution

Correct Answer: Option B


Explanation:
Heredity (inheritance) is the transmission of genetic information and traits from parents to offspring through genes. Variation refers to differences among individuals, evolution is the change in heritable traits over generations, and mutation is a change in DNA sequence. Mendel's laws describe the patterns of heredity. Genes are the units of heredity.

This question belongs to: Science Biology