Which of these is not a eukaryote?
A) Bacteria
B) Algae
C) Fungi
D) Protozoa
E) all are eukaryotes
Ans: A) Bacteria
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Scientists discovered that the primary reason leaves either develop as simple or compound is related to
A. whether the KNOX gene is active or not active. B. where the leaf primordium is positioned. C. whether auxins are moving in the stem tip. D. how fast the KNOX gene arrives at the primordium. E. the protein PHANTASTICA and its interaction with auxins.
Genetic recombination by conjugation was discovered by:
a. Francois Jacob. b. Elie L. Wollman. c. Gregor Mendel. d. Francois Jacob and Elie L. Wollman e. Elie L. Wollman and Gregor Mendel
Lateral meristems
a. are groups of dividing cells. b. are responsible for increasing the width of a stem or root. c. are cambia. d. produce secondary growth only. e. fit all of these descriptions.
The opening of stomata is thought to involve _____
A) an increase in the solute concentration of the guard cells B) active transport of water out of the guard cells C) decreased turgor pressure in guard cells D) movement of K+ from the guard cells