B or d.... hope this helps:)
Answer:
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Explanation:
Answer:
Tissue
Explanation:
The levels of organization go as follows:
Atom - the building blocks of all living and nonliving material
Molecule - two or more atoms that join together in chemical bond
Organelle - two or more molecules working together to perform a particular function in a cell
Cell - the smallest unit that exhibits all of the characteristics of life
<u>Tissue - two or more cells that work together to perform a particular function</u>
Organ - two or more tissues that work together to perform a particular function
Organ System - two or more organs that work together to perform a particular function
Multi-Celled Organism - two or more organ systems that work together
I think it is called the anemone
Answer:
Answer B. Endosymbiosis
Explanation:
Early protists were first eukaryotic organisms and had several membrane bound organelles. The anaerobic protists evolved by acquiring purple bacteria. The purple bacteria have the ability to carry out aerobic cellular respiration. The endosymbiont transformed into mitochondria in due course of evolution. Similarly, the photosynthesizing protists were evolved by endosymbiosis of cyanobacteria which in turn was transformed into chloroplast during further evolution.