Health — Biology STD 10 — Question

Explain the Terms: Death rate

Name the Following: Name the fly by which Typhoid germs are transmitted.

A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.

Why was the plant placed in the dark before beginning the experiment?

Give Reason:

The hand automatically shows the direction to turn a cycle without thinking.

Give the Technical Term: Name a hormone which controls developments of male secondary sexual characters.

Give technical term:
What does NADP stand for?

Give Technical Term:
Name the male gamete of a mammal.

State the Location:
Uterus

Name the two nucleic acids. Who discovered them?

Give Technical Terms:
The pigments produced by the breakdown of haemoglobin in liver.