<span>In the algae the term “colony” is used for a wide variety of organisms which have the single common attribute of being two or more cells associated regularly in a fashion such that this association is recognized as the morphological type of a genus and species.</span>
He wondered, Does the position of the pot determine the growth of the stem?<span>
He hypothesized that the plant’s stem grows perpendicular to the soil.
</span><span>To test his hypothesis, Brian placed the pot horizontally. He checked the plant after two weeks.
</span>
<span>Brian observed that a plant’s stem grows against gravity.
</span><span>On analysis, Brian found that the plant grew parallel to the soil. He modified the hypothesis, and then retested the experiment.
</span><span>Brian communicated the results to his science class.</span>
Cells with large numbers of mitochondria have a high energy demand
<span>Most sandstone is composed of quartz or feldspar </span>
