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Biology CBSE Live product
Class 9 (2025-26)
Improvement in food resources
Annual Revision I
1.
Hybridisation and weeding
Question:
2
m.
Choose the best answer:
1
.
Inter-generic hybridisation refers to crossing _______.
plant and a microorganism
different varieties of the same species
different species of the same genus
individuals belonging to different genera
2
.
Why are weeds considered harmful in crop fields?
They compete with crops for essential resources
They attract beneficial insects
They help crops grow faster
They increase soil fertility
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