Which of the following statements is NOT true about alternation of generations life cycle?
a) Spores develop into the gametophyte generation.
b) When the sperm fertilizes the egg, a zygote results that develops into the sporophyte.
c) The gametophyte produces eggs and sperm.
d) Meiosis produces spores that are haploid.
e) The sporophyte generation produces spores by mitosis in structures called sporangia.
Ans: e) The sporophyte generation produces spores by mitosis in structures called sporangia.
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In modern terms, Mendel's law of independent assortment states that ________
a. genes are sorted into gametes independently of other genes b. alleles are separated from each other during meiosis c. the probability of two independent events occurring together is the product of the individual probabilities d. alleles are sorted into the same gamete during meiosis
What characteristics of flat worms allow them to use diffusion to excrete waste materials and take up oxygen (and for some kinds, to absorb nutrition from their hosts)?
What will be an ideal response?
Reproductive isolating mechanisms are
a. specific behaviors that allow males to compete against other males for females. b. the processes by which sexual selection evolves within a population. c. the ways that gene flow is blocked between populations. d. the ways in which individuals within a species are unable to produce fertile offspring. e. the various geographic barriers to immigration and emigration of individuals between populations.
Which of the following molecules can be used as a substrate for cellular respiration?
a. glucose only b. glucose and lipids only c. glucose and proteins only d. glucose, lipids, and proteins only e. glucose, lipids, proteins, and fatty acids