Energy holds them together.
Hydra and Obelia are cnidarians (species of aquatic organisms) that belongs to the Class Hydrozoa.
Several ways in which Obelia differs from Hydra are;
- Hydra is a predative species that lives on substrates such as wood, while Obelia is a colonial species that lives as polyps on branched frameworks.
- Hydra is found in freshwater habitats, while Obelia is found in marine habitats.
- Hydra undergoes the medusa form in its life cycle, while Obelia undergoes the two forms (polyp and medusa) in its life cycle.
- Hydra has great regenerative powers while Obelia does not have great regenerative powers.
Increase blood osmolarity
increase rate of urine production
constrict the glomerulus arteriole
hold back Na+ from excretion
Answer:
There is no diagram but the needed information has been provided. The answer is:
Part C
Explanation:
The bacteria is a prokaryotic living organism in the domain Bacteria. It is pretty because it lacks a membrane-bound nucleus that houses its genetic material (DNA), instead its circular chromosome is found naked in a region of the cytoplasm called NUCLEOID. The nucleoid region contains the genetic material of the bacterium cell.
Since bacteria reproduces asexually, which does not allow diversity among species, bacteria ensures they promote genetic recombination by exchanging their genetic material in three ways: Transduction, Transformation and Conjugation. This genetic recombination causes them to be better pathogens and improve their resistance. However , since the exchange involves the genetic material (DNA), it is only natural that it involves the region where it is found, which is the NUCLEOID.
