Q2 of 60 Page 1

What is gene?

A gene is a unit of heredity or DNA which are transferred from parents to their off-springs during the process of reproduction.


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1

List any two properties of the elements belonging to the first group of the modem periodic table.

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Give one example each from your daily life where the domestic waste can be effectively reused and recycled.

 4

What is the main difference between sperms and eggs of humans? Write the importance of this different.

 5

List two possible ways in which a concave mirror can produce a magnified image of an object placed in front of it. State the difference, if any, between these two images.