The Fundamental Unit of Life — Science STD 9 — Question

Which organelle is the “power plant” of eukaryotic cell. Write in brief its functions.

Name the two important biological processes in which air is essential.

Name the following:

1. Multinucleate muscle fibre.
2. Spindle shape muscle fibre.

Draw a well labelled diagram of parenchyma and collenchymas.

Give one example of each:

1. Asymmetry, radial symmetry and bilateral symmetry.
2. Acoelomate, pseudocoelomate and haemocoelomate.

Define the weather.