Which of the following statements is NOT true of megaspores?
A. Megaspores produce female gametophytes.
B. Megaspores are larger than microspores.
C. A megaspore is a kind of spore of a seed plant.
D. The cells of the walls of the megasporangium are diploid but the megaspores themselves are haploid.
E. Megaspores are diploid.
E. Megaspores are diploid.
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The introduction of the brown tree snake to the island of Guam in the 1940s has resulted in _____
A) eradication of non-native rats and other undesirable/pest species B) the extirpation of many of the island's bird and reptile species C) a good lesson in biological control D) a new species of hybrids from crossbreeding with a native snake species E) its failure to compete with native species and its quick elimination from the island
How did evolutionary changes cause the loss of forelimbs in snakes?
What will be an ideal response?
In angiosperms, pollen is the product of a haploid microspore dividing mitotically. Therefore, pollen is
A. a sporophyte. B. a seed. C. a gametophyte. D. a spore. E. sperm.
The NADH and the hydrogen ions produced in glycolysis must become __________ in the cytoplasm by donating its electrons to pyruvic acid.
Fill in the blank(s) with the appropriate word(s).