The type of plant cell that provides support without interfering with growth and is familiar as the "strings in celery" is a

The appropriate choice is d. In C3 plants, conserving water encourages photorespiration.

In a lake, oxygenic phototrophs generate new organic materials and oxygen. If the primary production rates are overly high, the resulting surplus of organic matter can deplete oxygen levels in the bottom water due to respiration, leading to anoxic conditions, which then promotes anaerobic processes such as anaerobic respiration and fermentation. Organic matter that remains unconsumed in the surface layers sinks and is broken down by anaerobic organisms.