Explain the experiment which you have conducted in your school laboratory to know the affect of saliva on the starch by drawing a diagram.

You might have conducted and experiment in your school laboratory to prove that CO_2 is essential for Photosynthesis. Raju, who is in 9th class, wanted to perform the same experiment. He had some doubts regarding this experiment. Clarify them. What will be the result, if the same experiment is conducted in dark ?

You might have conducted and experiment in your school laboratory to prove that CO_2 is essential for Photosynthesis. Raju, who is in 9th class, wanted to perform the same experiment. He had some doubts regarding this experiment. Clarify them. Write the apparatus used to perform this experiment.

You might have conducted and experiment in your school laboratory to prove that CO_2 is essential for Photosynthesis. Raju, who is in 9th class, wanted to perform the same experiment. He had some doubts regarding this experiment. Clarify them. Prior to the experiment, the potted plant was kept in a dark room for a week. Why?

You might have conducted and experiment in your school laboratory to prove that CO_2 is essential for Photosynthesis. Raju, who is in 9th class, wanted to perform the same experiment. He had some doubts regarding this experiment. Clarify them. KOH pellets were kept in the glass jar. Why ?

Explain the procedure you have adopted in your school to prove that heat is liberated during respiration. What result we will get, if you perform this experiment with dry seeds.

Mention the two chemicals which you have used in an experiment to test the presence of starch in the leaf.

Write your experiences with your pet dog / cat / cow etc., that shows its affection on you.

What are the questions you asked the doctor who visited your school to know "the ways of transmission of HIV" ?

List out the matetrials you have used to observe the goat heart in your laboratory?