Explain the features necessary for both brown algae and dinoflagellates to be classified in the supergroup SAR.
What will be an ideal response?
Brown algae will have chlorophyll a and c as well as an accessory pigment that gives them their brown color. They will also store their food in the form of laminarin. Sizes can range from small forms to large multicellular ones.
Dinoflagellates are unicellular, photoautotrophic algae that are encased by a shell of cellulose and silicate plates. They also contain chlorophyll a and c and an accessory pigment that gives them their brown color.
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How many viroids are known to cause diseases in commercially valuable plants?
a. 12 b. 46 c. 68 d. 22 e. 30
The atomic number of an atom is
A. the number of protons in the atom. B. the number of neutrons in the atom. C. the number of protons and electrons in the atom. D. the number of protons and neutrons in the atom. E. None of these choices are correct.
The prokaryotic chromosome is comprised of a ____
a. highly folded mass of a single, linear molecule of DNA b. loosely folded mass of a single, linear molecule of DNA c. highly folded mass of a double, circular molecule of DNA d. highly folded mass of a single, circular molecule of DNA e. loosely folded mass of a single, circular molecule of DNA
In what trimester does the baby's skin become smoother as fat is deposited under the skin?
What will be an ideal response?