Two bird species have different mating calls, occupy different habitats in nature, and when they hybridize, the hybrids are infertile. Which isolating mechanisms maintain these species?
A. geographical isolation, temporal isolation, behavioral isolation
B. mechanical isolation, hybrid sterility, geographical isolation
C. ecological isolation, mechanical isolation, hybrid sterility
D. ecological isolation, behavioral isolation, and hybrid sterility
Answer: D
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Which is (are) the principal substance(s) that
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Plant meristematic cells _____
A) are distributed evenly in all tissues throughout the plant B) are undifferentiated cells that produce new cells C) increase the surface area of dermal tissue by developing root hairs D) subdivide into three distinct cell types named parenchyma, ground meristem, and procambium
Plasmids can help bacteria grow faster.
Answer the following statement true (T) or false (F)