Observe your surroundings carefully and write any three situations of your daily life where you can observe lines and angles. Draw the pictures in your note book and collect some pictures.

Give five examples of data that you can collect from your day to day life

Fungi are cosmopolitan, write the role of fungi in your daily life.

Give two examples from daily life where Tyndall effect is observed.

Give any two uses of washing soda.

Is there a relationship between the size of an organism and its life span ? Give two examples in support of your answer.

Bacteria cannot be seen with naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes with the help of a microscope, which sample would you carry and why?

Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?

What do you mean by hydrocarbons ? Give the names of the hydrocarbons that play a key role in our life daily life.

Give the advantages of using AC in daily life .