Dr. Bio samples some pond water to observe under the microscope. She finds the specimen above, which seems to have a clear shell or wall with yellowish pigmentation within. No flagella or cilia are observed. Recognizing that this is clearly a unicellular organism, Dr. Bio's best guess as to its classification is:

His best guess to it's classification is a Diatom

diatoms

Explanation:diatoms are aquatic algae which may live in marine and freshwater environment.they are golden brown.they can occurs as floating or dwelling in the bottom of the water body.

Diatoms are unicellular and they posses cell walls composed of pectin and silica deposits.they occur in varying shape.each half of its cell is called a valve and the whole cell is called a frustule.

Diatoms may have one or many chloroplast which contains chlorophyll,carotenoids and xanthophyll.thus makes the organism appear golden or yellow in colour.

They are primary producers and are easily fossilized to form diatomaceous earth.

hi~~

i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.