Which of the following is TRUE for female reproductive structures in angiosperms?
A) The sepals are contained within the petals, which enclose the carpel.
B) The stamen includes the filament and pollen-producing anther.
C) The filament and anther enclose the stigma and style.
D) The carpel includes a stigma, a style, and ovules enclosed within an ovary.
E) The style, which is vase-shaped, contains the ovary, stigma, and anther.
D
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In cattle, the presence or absence of scurs follows a sex-influenced pattern of inheritance. A heterozygous male has _______ and a heterozygous female has _______
A. Y-linked, X-linked B. no scurs, scurs C. X-linked, Y-linked D. scurs, no scurs
An organism that obtains its energy by oxidizing organic or inorganic substances is a(n) ____
a. autotroph b. auxotroph c. heterotroph d. chemotroph e. phototroph
If you were a bacterial cell, which of the following would be the most beneficial for you to have or be able to make for the survival of your species?
A. Endospore B. Pilus C. Cilia D. Exotoxin
Imagine that you have an atom of sodium (Na), which has two electrons in its innermost shell, eight electrons in its middle shell, and one valence electron in its outermost shell. In this atom, which electron would have the greatest amount of potential energy?
a. the valence electron b. an electron in the middle shell c. an electron in the innermost shell d. All of the electrons in this atom would have equal amounts of potential energy.