Red and white blood cells are produced where?
What will be an ideal response?
Answer: in the marrow of some bones, such as the femur
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An anthropologist discovers the fossilized heart of an extinct animal
The evidence indicates that the organism's heart was large, was well-formed, and had four chambers, with no connection between the right and left sides. A reasonable conclusion supported by these observations is that the _____. A) animal had evolved from birds B) animal was endothermic and had a high metabolic rate C) animal was most closely related to alligators and crocodiles D) animal was likely an invertebrate animal E) species had little to no need to regulate blood pressure
Why is speciation by polyploidy more likely in plants than in animals?
A) Plant gametes can be produced by meiosis from somatic cells that have undergone many rounds of mitosis. B) Plant gametes lack postzygotic isolating mechanisms. C) Plants are sessile and, therefore, are never prezygotically isolated to ensure reproduction. D) Plants are sessile and cannot speciate via dispersal. E) Plants lack the DNA repair enzymes that animals have.
Answer the following statements true (T) or false (F)
1. Slime molds possess characteristics of both fungi and protozoa. 2. Protozoa in the category known as Mastigophora move by means of cilia. 3. A dimorphic fungus would exist as a mold inside the human body. 4. The organism that causes a “red tide” is an alga. 5. Volvox is a multicellular alga.
The small basidia that form during a Ustilago maydis infection in corn trigger the plant to form ________.
Fill in the blank(s) with the appropriate word(s).