GEOTROPISM
This is the response of plant parts to the stimulus of gravity. Plant shoots grow away from gravity of the earth and are said to be negatively geotropic. Roots grow towards gravity and are said to be positively geotropic. …
ORGAN OF SIGHT
The eyes are the organs of sight in the higher invertebrates and all vertebrates. They (eyes) are equipped with photo receptors (rods and cones) to detect light. Most of these animals have two eyes. In man, the eyes are more…
Study Guide
