11: Rice & Biotechnology

Question 1

What adaptation allows rice to transport oxygen to submerged roots in flooded conditions?

Answer 1

Aerenchyma

Question 2

What is the main nutritional benefit of Golden Rice?

Answer 2

Production of beta-carotene for vitamin A

Question 3

Which organism is used as a natural vector in genetic engineering of rice plants?

Answer 3

Agrobacterium tumefaciens

Question 4

What is the role of the Ti plasmid in plant genetic engineering?

Answer 4

Transfers desired genes into the plant genome

Question 5

What type of photosynthesis does rice use?

Answer 5

C3

Question 6

How do Bt toxins control insect pests in GM rice?

Answer 6

They bind to gut receptors and disrupt digestion

Question 7

What is one reason for public skepticism towards GM crops?

Answer 7

Concerns about long-term health and corporate control

Question 8

What defines a cisgenic plant?

Answer 8

It contains genes from a related species using biotechnology

Question 9

What was a major environmental drawback of the Green Revolution?

Answer 9

Overuse of synthetic fertilisers and pesticides

Question 10

The symbiotic relationship between Azolla and Anabaena benefits rice cultivation by:

Answer 10

Fixing nitrogen and enriching soil fertility