Describe the various steps involved in the sexual reproduction in animals . Draw labelled diagrams to show the fertilizations of an ovum (or egg) by a sperm to from a zygote

Describe the various steps involved in the process of binary fission with the help of a diagram.

Draw a well labelled diagram to show the process of fertilization in flower.

Describe the various steps involved in getting clear water from wastewater.

Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.

Draw a neat labelled diagram showing steps of PCR.

(a) Describe the process of nutrition in Amoeba. Draw labelled diagrams to show the various steps in the nutrition in Amoeba. (b) What is the mode of nutrition in Amoeba known as ? (c) What is the process of obtaining food by Amoeba called ? What does it mean ?

What is spectrum? Draw a labelled diagram to show the formation of spectrum. Name the various colours of spectrum.

With the help of a labelled diagram show (a) Nitrogen cycle in nature (b) Describe briefly any two processes involved in the cycling of N_(2) in the environment. OR With the help of a labelled diagram show the cycling of carbon in nature. What are the two ways in which carbon dioxide is fixed in the environment.

Draw a neat labelled block diagram of a detector of AM wave. Show the waveforms at various stages.