NEET BIOLOGY

Detailed explanation-1: -Light intensity influences the manufacture of plant food, stem length, leaf color and flowering. Generally speaking, plants grown in low light tend to be spindly with light green leaves. A similar plant grown in very bright light tends to be shorter, better branches, and have larger, dark green leaves.

Detailed explanation-2: -The plants that were not exposed to light grew 15.7 millimeters more on average, and the difference of growth between no light and half light plants was 7.27 millimeters. In conclusion, the plants that were exposed to no light whatsoever, were the ones who grew significantly larger than the other plants.

Detailed explanation-3: -We found that seeds grown in darkness (the positive control treatment) had grown most rapidly. For the coloured treatments, we found that red light had the most growth, followed by the green light, and blue light having the slowest growth rate.

Detailed explanation-4: -The light slows stem elongation through hormones that are sent down the stem from the tip of the stem. In the darkness, the hormones do not slow stem elongation. The seeds in the dark-grown condition rely upon the stored chemical energy within their cells (lipids, proteins, carbohydrates) to power their growth.