Pollen and seeds evolved in response to
A) living on dry land.
B) an increase in pollinators.
C) seed predators.
D) living in a moist environment.
E) the evolution of flowers.
A
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A group of similar species that share the most recent common ancestry is a(n) ____
a. kingdom b. class c. order d. genus e. species
two key observations underlying natural selection are that members of a population vary in their ----- and that all species can produce more offspring than the environment can support
Fill in the blank(s) with the appropriate word(s).
Which observations illustrate shared ancestry by anatomical comparison studies? Check all that apply.
A. Structures are found to be homologous. B. A structure becomes vestigial. C. Different structures evolve in similar ways when subjected to the same selective pressures. D. The same structure has evolved to carry out different functions.
Which statement correctly distinguishes a difference in plant and animal cell division?
A) in plant cells, mitosis precedes G2, while in animal cells mitosis follows G2 B) the bipolar spindle seen in dividing animal cells is absent in plant cells C) condensed chromosomes can be seen in plant cells during interphase D) cytoplasmic division differs; plant cells form a cell wall but animal cells do not