At what stage of animal development do cells first move from the surface of the embryo into the interior, resulting in a two- or three-layered embryo?
A. zygote formation
B. blastulation
C. neurulation
D. gastrulation
E. metamorphosis
Ans: D. gastrulation
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Photoautotrophs use light energy directly for
A. the reduction of carbon dioxide to glucose. B. the production of ATP and NADPH. C. both the production of ATP and NADPH and the reduction of carbon dioxide to glucose. D. neither the production of ATP and NADPH nor the reduction of carbon dioxide to glucose.
People often talk about each of our “carbon footprints.” What do you think that means?
a. how much carbon dioxide we exhale b. how much carbon dioxide we inhale c. how much carbon dioxide is generated from photosynthesis d. how much carbon dioxide is generated from the burning of fossil fuels to sustain one’s lifestyle
Which individual established the connection between genes, meiosis, and fertilization?
a. Gregor Mendel b. Hugo de Vries c. Carl Correns d. Erich von Tschermak e. Walter Sutton
The root system of mangroves is extensive and penetrates deep into the sediment
Indicate whether the statement is true or false