Microspore mother cells produce microspores. What do microspores then develop into?
A. synergids
B. pollen grains
C. megaspores
D. endosperm
E. egg cells
Answer: B
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Check all of the features of C. elegans that make it a great model system to study developmental processes.
_____ C. elegans is ubiquitous in the wild _____ C. elegans is small and fast growing _____ a complete lineage map exists _____ the organism is transparent _____ C. elegans is useful in experimental genetics
Which of the following is an example of diffusion?
A. movement of individual oxygen molecules from the air to the bloodstream B. movement of large numbers of air molecules into and out of the lungs C. transport of oxygen throughout the body via the circulatory system D. binding of oxygen to hemoglobin within the red blood cells E. movement of oxygen molecules from the lungs to the bloodstream AND movement of large numbers of air molecules into and out of the lungs
In experiments to show that DNA is the genetic material, Hershey and Chase labeled DNA with radioactive
A) amino acids. B) sulfur. C) phosphorus. D) carbon.
Which term refers to a special capsule or chamber where a plant will make the first cells of the gametophyte generation?
a. sporangium b. rhizome c. vascular system d. shoot system