Plants obtain carbon from:

a. water
b. carbon dioxide
c. sugar
d. oxygen
e. glucose


Answer: b. carbon dioxide

Biology & Microbiology

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Why are gymnosperms considered to be "naked seed" plants?

A) Their seeds have a thin layer of endosperm. B) They do not produce seeds; they produce only spores. C) Their seeds are not enclosed within ovaries. D) Their seeds develop on the surface of sporophytes.

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What are antibodies?

A) Bacteria B) Proteins produced by B cells that bind to foreign proteins C) Cells that undergo apoptosis D) Viruses E) Proteins produced by T cells that bind to foreign proteins

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