NCERT Solutions

The table on the next page shows some data. Study the data and try to find out examples appropriate for the conditions given in the second and third columns. If you think that an example for any of the conditions given below is not possible, explain why.

\begin{tabular}{|l|l|l|l|l|} \hline S. no. & Does it grow? & Does it respire? & Example & Remarks
\hline 1. & No & No & &
\hline 2. & No & Yes & &
\hline 3. & Yes & No & &
\hline 4. & Yes & Yes & &
\hline \end{tabular}

You have learnt that different conditions are required for seed germination. How can we use this knowledge for proper storage of grains and pulses?

You have learnt that a tail is present in a tadpole but it disappears as it grows into a frog. What is the advantage of having a tail in the tadpole stage?

Charan says that a wooden log is non-living as it cannot move. Charu counters it by saying that it is living because it is made of wood obtained from trees. Give your arguments in favour or against the two statements given by Charan and Charu.

What are the similarities and distinguishing features in the life cycles of a mosquito and a frog?

A plant is provided with all the conditions suitable for its growth (Fig. 10.9). Draw what you expect to see in the shoot and the root of the plant after one week. Write down the reasons.

Tara and Vijay set up the experiment shown in the picture (Fig. 10.10). What do you think they want to find out? How will they know if they are correct?

Design an experiment to check if temperature has an effect on seed germination.