Which light influences the opening of stomata?

What happens when ferrous sulphate crystals are heated?

Iron filings were added to a solution of copper sulphate. After 10 minutes, it was observed that the blue colour of the solution changes and a layer gets deposited or iron filings. What is the colour of the solution and the layer deposited?

In the slides showing binary fission in Amoeba and budding in yeast, what is it observed?

Study the ray diagram given below and answer the following Question s:

i. State the type of lens used in the figure.

ii. List two properties of the image formed.

iii. In which position of the object will the magnification be-1?

OR

A student obtains a blurred image of an object on a screen by using a concave mirror. In order to obtain a sharp image on the screen, in which direction he will have to shift the mirror?