Germination requires the use of metabolic reserves in the seed. Which of these compartments contains starch used to fuel early seedling growth?
A. protoplasts
B. amyloplasts
C. chromoplasts
D. mitochondria
E. chloroplasts
Answer: B
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Numerous hypotheses have been proposed for the mass extinction of about 60% of all species, including nearly all the dinosaurs, about 65 million years ago. Evidence has been found of the impact of a large meteor at about the time of this mass extinction. The amount of dust and debris put into the atmosphere upon impact, as well as atmospheric heating, would have been enormous. Using your knowledge of photosynthesis, speculate about why the dinosaurs subsequently became extinct.
What will be an ideal response?
The study of algae is called
A) algaeology. B) botany. C) mycology. D) phycology.
Invertebrate chordates include __________ and __________, both marine filter-feeders. Fill in the blank(s) with the appropriate word(s)
Alleviates are found in which of the following supergroups?
a. unikonta b. SAR clade c. archaeplastida d. excavata