Transgenic Plant

In the picture

1. 1A highlighted segment on a double helix: the useful gene
2. 2A rod-shaped bacterium at a plant cell: the vector that carries the gene inside
3. 3Shallow dishes with pale and dark clumps: modified cells selected
4. 4A small plantlet in a glass jar: modified cells grown into a plant
5. 5Two potted stems on a greenhouse bench: plants tested for pest damage

Examples

• Cotton that resists insect pests
• Papaya that resists a virus

Quiz: Transgenic Plant (Age 14)

1. 1

   During the making of a transgenic plant, what does the bacterial vector do?

   • It removes all unmodified cells from the plant.
   • It carries the chosen gene into plant cells.
   • It makes the plant produce pest-resistant leaves by itself.
2. 2

   Which cells are grown into whole plants after gene insertion?

   • Only cells that show pest damage.
   • All cells from the treated plant tissue.
   • Only cells that have taken up the gene.
3. 3

   What are transgenic plants checked for at the final stage?

   • Whether the bacterial vector is still inside every cell.
   • Whether the new trait works.
   • Whether the useful gene has disappeared from the plant.

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.