Strategies for Enhancement in Food Reproduction — BIOLOGY STD 12 Science — Question

Name the vegetative propagules in:

1. Potato, and.
2. Pistia.

Name the type of fission with examples.

State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialisation period in England.

What is a monosomic condition?

Luteal phase of the menstrual cycle is also called the secretory phase. Give reason.

How are tobacco plants benefitted when nematode specific genes are introduced into them using certain vectors? Name the vector used.

Why do certain genes tend to be inherited together in a cell at the time of cell division?

Why is the use of unleaded petrol recommended for motor vehicles equipped with catalytic converters?

How does haemozoin affect the human body when released in blood during malarial infection?

Name the organelles which help in translation.