The letter “A” in the above figure represents the
a. style.
b. ovary.
c. stigma.
d. anther.
e. filament.
Answer: d
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Ribosomes are very small non-membranous organelles that can either exist freely in the cytoplasm or be embedded in the endoplasmic reticulum of a cell; they are associated with the synthesis of
a. lipids. b. proteins. c. nucleic acids. d. carbohydrates.
Which of the following structures gives rise to endosperm?
A. Zygote formed from the fusion of a sperm and an egg B. Triploid cell formed during double fertilization C. Inner wall of the ovary D. Cytoplasm of the megaspore E. Cytoplasm of the microspore
All of the following are correct about foodborne illnesses in the United States except
A) The number of cases is decreasing as people learn more ways to prevent them. B) Most cases are probably not reported. C) The most common bacterial cause is Campylobacter. D) The HAACP system is designed to prevent cases. E) The number of cases would decrease if more food were irradiated.
Margaret had an unusual viral infection that damaged her posterior pituitary. Ever since, she has been excreting a large volume of dilute urine. The doctor tells Margaret that she has the disorder known as ________.
A. diabetes insipidus B. diabetes mellitus C. hypertension D. anti-diuresis E. atherosclerosis