A seed is composed of three parts:
A) root, stem, and leaves.
B) xylem, phloem, and seed coat.
C) seed coat, embryo, and food supply.
D) apical meristems, lateral meristems, and seed coat.
E) spore coat, embryo, and vascular system.
Correct Answer:
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Q27: Water is transported upward through the plant
Q28: Secondary growth refers to growth:
A)that is of
Q29: Phytoremediation refers to the process by which
Q30: In all ecosystems, heterotrophs are completely dependent
Q31: Humans first appeared about _ years ago.
A)2000
B)200,000
C)2
Q33: The projected human population of the Earth
Q34: What organisms are found at the base
Q35: The development of agriculture started at least
Q36: Cytology is the study of:
A)energy transformations.
B)plant form.
C)heredity.
D)fossil
Q37: Natural communities of organisms of wide extent,
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