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The part of a plant that is the stalk-like support for a leaf is the
Q5: An internal membrane in chordates that protects
Q11: The number of individuals that die in
Q19: What occurs in the pineal gland when
Q21: Which main tissue type of the circulatory
Q26: The water absorption rate of a plant's
Q45: Sea cucumbers and sea urchins belong to
Q68: What are the three major body regions
Q72: The endocrine gland that produces melatonin is
Q74: Cocklebur will not flower if exposed to
Q78: The type of succession that occurs in