A population of plants experiences several years of severe drought. Much of the population dies due to lack of water, but a few individuals survive
You set out to discover the physiological basis for their adaptation to such an extreme environmental change. You hypothesize that the survivors have the ability to synthesize higher levels of _____ than their siblings do. A) auxin
B) gibberellin
C) cytokinin
D) abscisic acid
D
You might also like to view...
Answer the following statements true (T) or false (F)
1. The Nernst Equation is: E = 60 mV log10 ([Xextracellular/Xintracellular]). Given this, the equilibrium potential for a given ion would be increased with an increase in its intracellular concentration. 2. Action potentials are typically also characterized as graded potentials. 3. Saltatory conduction is often studied in large marine invertebrates such as the giant squid. 4. The exposed, unmyelinated gaps between glia on myelinated axons are also sites of voltage-gated Na+ channels.
A/the ____ detects a stimulus and sends this information to the nervous system
a. gland b. muscle
c. brain stem d. sensory receptor e. hypothalamus
Asexual reproduction can involve all of the following processes except:a
splitting. b. budding. c. fertilization. d. fragmentation. e. parthenogenesis.
What is the main component of an animal cell membrane?
A. cholesterol B. glycolipids C. aquaporins D. polynucleotides E. phospholipids