31. In the Charales, the closest relatives of higher plants , full cellular differentiation of tissues occurs. 32. "' Arogenate dehydratase "'is found mostly in the chloroplasts of higher plants . 33. Today research activities are focused on the evolution, phylogenetic systematics, and physiology of higher plants . 34. The increase stemmed from higher plant capacity, stronger sales volumes and wider profit margins for certain petrochemicals. 35. The "'University of Oxford Botanic Garden "'is the oldest higher plant families. 36. Isoflavones are produced via a branch of the general phenylpropanoid pathway that produces flavonoid compounds in higher plants . 37. Higher plants sometimes employ strategies such as reorientation of leaf axes to minimize incident light striking the surface.38. Higher plants ( wheat, rice, salad ) would be utilised to produce food for the crewmembers.39. The technique of cultivation of microalgae on commercial basis is fairly inexpensive compared to the cultivation of higher plants . 40. In higher plants , chloroplast movement is run by phototropins, blue light photoreceptors also responsible for plant phototropism.