F. Skoog and his co-workers observed that from the internodal segments of tobacco stems the callus (a mass of undifferentiated cells) proliferated only if, in addition to auxins the nutrients medium was supplemented with one of the following: extracts of vascular tissues, yeast extract, coconut milk or DNA. Miller et al. (1955), later identified and crystallised the cytokinesis promoting active substance that they termed kinetin.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338222
Experiments done by Charles Darwin and his son on plant phototropism showed that
1 Within coleoptiles, auxin moves laterally away from the source of the light
2 Auxin is produced in the tip of the coleoptiles
3 More cell elongation takes place on the shaded side of the plant
4 The tip of the coleoptiles is the light receptor of the plant
Explanation:
Experiments done by Charles Darwin and his son on plant phototropism showed that the tip of the coleoptiles is the light receptor of the plant
F. Skoog and his co-workers observed that from the internodal segments of tobacco stems the callus (a mass of undifferentiated cells) proliferated only if, in addition to auxins the nutrients medium was supplemented with one of the following: extracts of vascular tissues, yeast extract, coconut milk or DNA. Miller et al. (1955), later identified and crystallised the cytokinesis promoting active substance that they termed kinetin.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338222
Experiments done by Charles Darwin and his son on plant phototropism showed that
1 Within coleoptiles, auxin moves laterally away from the source of the light
2 Auxin is produced in the tip of the coleoptiles
3 More cell elongation takes place on the shaded side of the plant
4 The tip of the coleoptiles is the light receptor of the plant
Explanation:
Experiments done by Charles Darwin and his son on plant phototropism showed that the tip of the coleoptiles is the light receptor of the plant
