#Question id: 5028
#Unit 11. Evolution and Behavior
What is the probable sequence in which the following clades of animals originated, from earliest to most recent?
1. tetrapods
2. vertebrates
3. deuterostomes
4. amniotes
5. bilaterians
#Question id: 82
#Unit 1. Molecules and their Interaction Relevant to Biology
The structures of D-ribose and D-arabinose are shown below. These two molecules are
#Question id: 11193
#Unit 7. System Physiology – Animal
Conduction and refractory periods (states) are typical of ________.
#Question id: 10192
#Unit 6. System Physiology – Plant
Solar-tracking leaves present a nearly vertical position at sunrise, and during the night the leaves take a horizontal position, the sensing of light in solar-tracking leaves occurs in specialized regions of the leaf or stem, it can response for,
#Question id: 24644
#Unit 10. Ecological Principles
Which of the following layers is the zone of eluviation or maximum leaching?