The nucleus is an organelle found in the cytoplasm of the cell - but it is not part of the cytoplasm! There are small pores in the nuclear membrane called nuclear pores where molecules can leave and enter the nucleus - so for example, mRNA would leave the nucleus and go into the cytoplasm where the mRNA would be translated into protein which in some cases go back into the nucleus to function (like DNA binding proteins - transcription factors, etc.). The nucleus and cytoplasm basically work together to keep a cell alive. So, in reality it is a symbiotic relationship - one can't survive without the other!
I only know about Blue Jays, so i hope this help you. Blue jays are sometimes known to eat eggs or nestlings, and it is this practice that has tarnished their reputation. In fact, they are largely vegetarian birds. Most of their diet is composed of acorns, nuts, and seeds—though they also eat small creatures such as caterpillars, grasshoppers, and beetles.
They increase the rate at which nutrients are absorbed.
chloroplast and mitochondria interaction are required for the plant to synthesis energy rich organic molecules and later break the down.Chloroplast is responsible in the synthesis of energy rich molecules while mitochondria take the glucose made and convert it to ATP which provide energy.