The bacterium present in curd is:

Some plants have nitrogen-fixing bacteria in their root nodules. What are these bacteria called?

The process of conversion of sugar into alcohol by yeast is called

Some medicines obtained from micro-organisms are applied to kill or stop the growth of disease-causing microorganisms. Such medicines are called

Which one of the following is not a method of food preservation?

Chromosome carry _____ which transfers characters from parents to offsprings

Nucleus is separated from cytoplasm by

During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is

Two objects repel each other. This repulsion could be due to

After fertilisation, the ________ divides repeatedly to give rise to a ball of cells

Paramecium reproduces by dividing itself into two daughter cells. This process is called

Name the process in which tadpoles develop into young frogs