It is sub-classified as a rough, or granular ER, and a smooth or agranular ER. The rough Endoplasmic reticulum is lined with ribosomes and modifies and packages proteins that have been produced by the ribosome. In skeletal and cardiac muscle it is known as the sarcoplasmic reticulum.
I don’t understand the question! context?
They can slow their heartbeat down
I would say that the first flower attracts birds etc. t go and drink it's nectar (also I know that humming birds are attracted to red), and thus spread it's pollen. The second flower most likely attracts bees seeing how t is also sweetly scented, but has no nectar. This must mean that it only has pollen, which bees are great at spreading! I have no clue about the last one....Maybe bugs or bats?? Those are the only other pollinators I know of. It could possibly be that there is no pollinator for the third flower and it just tries to keep animals and insects from eating it with it's shape and odor and just relays on the wind for pollination.<span />
