NEET Botany - MCQ Practice Questions

Agrobacterium tumefaciens is the natural genetic engineer of plants. Its Ti plasmid is widely used for transferring foreign DNA into plant cells.

ELISA (Enzyme-Linked Immunosorbent Assay) is a technique used to detect pathogens and transgenes in plants.

Bt cotton produces Cry1Ac protein from Bacillus thuringiensis that provides resistance against the cotton bollworm (Helicoverpa armigera).

Restriction endonucleases (restriction enzymes) recognize and cut DNA at specific palindromic sequences, essential for cloning.

Selectable markers (like antibiotic resistance genes) help identify and select successfully transformed plant cells from non-transformed ones.

Bt Cotton is the only GM crop commercially cultivated and approved in India since 2002, with extensive adoption across states.