The is a network of nerves located in the brainstem. a. reticular formation b. cerebral cortex c. hypothalamus d. medulla

The correct answer is A. The reticular formation is a network of nerves located in the brainstem.

Explanation:

The reticular formation is a structure of the brainstem, from the rostral part of the annular protuberance to the caudal part of the diencephalon, which is responsible for circadian sleep / wake cycles. Phylogenetically it is one of the oldest parts of the brain. It is formed by neurons of different sizes and shapes scattered in the white matter. This system seems to intervene in the state of consciousness. Similarly, reticular formation modulates alertness and is composed of diffuse neuronal systems with different monoamines as neurotransmitters.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.