What is the significance of sporopollenin in bryophytes?

it forms the archegonium wall, resistant to degradation by enzymes and chemicals, thus protecting the egg.

it forms the spore wall, resistant to degradation by enzymes and chemicals, thus protecting the spores.

it is a male gamete of bryophytes, thus in the fertilization of the egg.

protein synthesis is an example of feedback mechanism which in homeostasis

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a