What could lead members of a single species in a specific geographical area with a variety of habitats to evolve new traits?
a. Acquisition of multiple copies of each chromosome will lead to the evolution of different traits.
b. Formation of hybrids from cross-mating will lead to the evolution of different traits.
c. Limited gene flow will lead to the evolution of different traits.
d. Survival in one habitat or another in a single geographical area will lead to the evolution of different traits in the two groups.
e. Allopatric speciation will lead to the evolution of different traits
Ans: d. Survival in one habitat or another in a single geographical area will lead to the evolution of different traits in the two groups.
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Which statement is true of the female gametophyte of pine?
a. It's a product of repeated cell divisions of the functional megaspore. b. It's haploid. c. It serves as the stored food to be used by the embryo sporophyte upon germination. d. All of the above are true.
When might cytosol leak into plant cell vacuoles?
A) if water freezes outside a plant cell B) if water freezes inside a plant cell C) if severe drought conditions shut down normal rates of transpiration D) if the critical night length isn't met
Which statement best describes a lophophore?
a. It is a ciliated ring of tentacles surrounding the mouth. b. It is a structure used for locomotion in the Lophophorata. c. It is the opening also referred to as the anus in the Ecdysozoa. d. It is a larval stage found in the Lophotrochozoa and the Ecdysozoa. e. It is one of the openings to the excretory system of phylum Platyhelminthes.
Refer to the accompanying figure. In which region will the osmolality of the filtrate be at the lowest value?
a. 3 b. 5 c. 6 d. 9 e. 10