Exam 22: The Algae

What is found in land plants that is lacking in Fucus?

Agar and carrageenan are examples of chemicals called ______ which are used as emulsifiers,stabilizers,and gelling agents.

Siphonous algae have a tubular organization with no internal walls.

The euglenoids are capable of producing an extremely powerful nerve toxin and are responsible for the phenomenon known as the Red Tide.

Ulva is both

The unicellular algae that cause "red tides" belong to the Division:

In Fucus,the swollen areas at the ends of the blade are reproductive regions known as ________.

Diatoms with bilateral symmetry are known as _______ diatoms.

One of the most toxic cyanobacteria is

Brevetoxins cause _______ in humans.

Which of the following substances has been shown to block the replication of rhinoviruses?

Their high production of _______ make microalgae valuable for the production of biofuel.

In biological control,a synthetic toxin is introduced to control the spread of an invasive species.

In the life cycle of a green alga,syngamy occurs between

______ is a product derived from the brown algae that imparts a smooth texture in both foods like icings and puddings and in industrial products like paints and hand lotions.

The glass-like cell wall of diatoms is called a frustule.

Which of the following high-protein "alga" was cultivated by the Aztecs and is a traditional food in Chad?

Porphrya is also known as

The body of an alga is termed the ________.

Instead of a rigid cell wall,a proteinaceous pellicle occurs on organisms in the Division: