The ________ is the source of new cells in the meristem.
A. Stem cell reservoir
B. Schlerenchyma
C. Lateral cells
D. Procambium
E. Sapwood
Answer: A. Stem cell reservoir
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What is a characteristic of color vision?
a. It is limited to vertebrates. b. It depends on blue, green, and red cones in primates. c. It is the result of different concentrations of the photopigment rhodopsin. d. It results from special photoreceptors located within the optic nerve. e. It depends on four types of cones in mammals other than primates.
Why do woodland star flowers likely abort flower heads with Greya moths in geographic locations where other nonflower-feeding pollinators are present?
a. Greya moths do not pollinate woodland stars in locations with multiple pollinators. b. Pollination by Greya is no longer essential for the reproduction of woodland stars. c. Pollen becomes limited and woodland stars can no longer afford to lose seed to Greya larvae. d. B and C.
A population with zero growth is indicated by
a. A. b. B. c. C. d. D. e. none of these.
In DNA,
a. G pairs with T and A pairs with C. b. G pairs with A and C pairs with T. c. G pairs with C and A pairs with T. d. G pairs with C and U pairs with A.