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In biolistics (gene gun) used for plant transformation:
ACells are bombarded with high-velocity micro-particles of gold/tungsten coated with DNA
BDNA is injected via a glass needle
CCells are electroporated
DCells are sliced with a microtome
Answer & Solution
Correct answer: A. Cells are bombarded with high-velocity micro-particles of gold/tungsten coated with DNA
**Biolistics / gene gun** = mechanical method for plant transformation. Gold or tungsten **microparticles coated with DNA** are fired into plant cells at high velocity. Penetrates the rigid plant cell wall, delivering DNA directly to the cytoplasm/nucleus.
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