Human Health and Diseases. — Bio Zoology STD 12 — Question

Rhizobium is a bacteria but acts as bio-fertilization. How?

Name any four Neo – Darwinists.

Fruit flies (Drosophila melanogaster) are the most widely used genetic tool by molecular geneticists. The life cycle of a fruit fly completes within a time span of 15 days. Calculate the death rate if 12 individuals in a laboratory population of 148 fruit flies died during a particular week.

Name the scientist who discovered ozone layer

Differentiate nucleoside from nucleotide.

Point out any four peripheral lymphoid organs.

Point out the factors that alters the allelic frequency of a population.

Which is the largest biome on Earth? Classify it.

Expand the acronyms:

1. GIFT
2. ICSI

Enumerate the characters of a Biome.