Now try to, remember the name of some animals which were used for agriculture purpose in the past but not now. Take help, if neccessary, from your teacher or elderly persons of your locality.

Name some animals which were used in agriculture. Now what do we used instead of those animals?

Write down the names of animals that were used for transport earlier but is no longer used now.

Some halogen containing compounds are useful in daily life. Some compounds of this class are responsible for exposure of flora and fauna to more and more of UV light which causes destruction to a great extent. Name the class of these halocompounds. In your opinion, what should be done to minimise harmful effects of these compounds ?

What is a bisexual flower? Collect five bisexual flowers from your neighbourhood and with the help of your teacher find out their common and scientific names.