Biodiversity and Conservation — BIOLOGY STD 12 Science — Question

What is a cistron?

Name one oviparous and viviparous animal.

What is colostrum?

Write the two components of the first artificial recombinant DNA molecule constructed by Cohen and Boyer.

Name a microbe used for the production of Swiss cheese.

Name the free-living, non-pathogenic nematode, whose genome has been sequenced.

Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.

In which year was the Air (Prevention and Control of Pollution) Act amended to include noise as air pollution.

Normally one embryo develops in one seed but when an orange seed is squeezed many embryos of different shapes and sizes are seen. Mention how it has happened.

Between amphibians and birds, which is more likely to be able to cope with global warming? Give reason.