How does nutrition takes place in bud of Hydra? please give right and systematic answer..
don't eat free points..​

Explanation:

Hydra is a simple aquatic organism of the phylum cnidaria. It has tentacles around it mouth. The tentacles help to catch flying insects or nutrients and infest it to the mouth. The food pass from the cavity to the digestive wall. The digestive system then secrete digestive enzymes which break down the food into smaller nutrients and it is then absorbed in the body.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.