Observing chloroplast:
1. Collect some algae from pond and separate out thin filaments of them.
2. Place a few filaments on slide. Observe it under microscope.
Observations:
1. In algae the chloroplasts are found as ladders, stars, spirals or reticulate.
2. The primary function of chloroplasts is to trap the energy of sunlight and transform it to chemical energy in photosynthesis.