Flowers that make pollen, but not ovules, lack
A) carpels. B) stamens. C) sepals. D) filaments. E) petals.
A
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All of the following are actin-dependent nonmuscle motility except
A) translocation of multienzyme complexes. B) pinching off of the cleavage furrow in cytokinesis. C) chemotaxis. D) cyclosis or cytoplasmic streaming. E) amoeboid movement.
What does the mesoderm have to do with the designation of a true coelom?
A. The mesoderm gives rise to the fluid found within the coelom. B. The mesoderm gives rise to the lining of the coelom. C. The mesoderm gives rise to the outer covering of the coelom. D. The mesoderm gives rise to the structure of the coelom wall. E. The mesoderm has nothing to do with the coelom.
Used to transfer solid ingredients to weighing pans and ointment slabs to mix compounds.
The circulatory system of bony fishes, rays, and sharks is similar to
A) that of birds, with a four-chambered heart. B) the portal systems of mammals, where two capillary beds occur sequentially, without passage of blood through a pumping chamber. C) that of reptiles, with one pumping chamber driving blood flow to a gas-exchange organ, and a different pumping chamber driving blood to the rest of the circulation. D) that of sponges, where gas exchange in all cells occurs directly with the external environment. E) that of humans, where there are four pumping chambers to drive blood flow.