How is the seed of an angiosperm different than the seed of a gymnosperm?
What will be an ideal response?
ANSWER: The angiosperm seed is considered enclosed. The ovary surrounds and protects the ovules,
and later, when the ovary matures into a fruit, it protects the seeds. The gymnosperm seed
is considered naked. The seed is not surrounded by the tissue of a fruit.
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Thyroid hormone is to amphibian metamorphosis as this compound is to insect molting.
A. estogen B. aldosterone C. ecdysone D. cortisol E. butterfly peptide
In 2010, India had a population of 1,170,000,000, a birthrate of 0.027, and a death rate of 0.013. Approximately, by how much did the Indian population grow in 2010?
A. 170,000,000 B. 17,000,000 C. 1,700,000 D. 17,000 E. 170,000
A population's age structure tracks
a. the average age of the members of the population. b. how long the population has existed in the area. c. the rate at which the population is aging. d. the relative numbers of each age.
Two mammals, a sheep and a goat, produce offspring. Only the F1 and F2 generations produce fertile
offspring. This is occurs as result of: a. hybrid breakdown. b. hybrid inviability. c. hybrid sterility. d. macroevolution. e. microevolution.