Which of the following lists correctly represents the order of evolutionary events in the history of plants, from earliest to most recent in time?
a. cuticle, flowers, seeds, spores
b. seeds, pollen, spores, flowers
c. roots, vascular tissue, pollen, flowers
d. spores, roots, cuticle, vascular tissue
e. vascular tissue, pollen, flowers, cuticle
Ans: c. roots, vascular tissue, pollen, flowers
You might also like to view...
The inhalation of cigarette smoke and similar pollutants has a gradual effect on cilia lining the respiratory tract, first causing the beating to slow and eventually stop. How does this change in cilia most directly impact the resistance mechanisms of the host?
A. Acquired immunity due to antibody response would be lost B. Innate host immunity due to mechanical barrier protection would be lost C. Both acquired and nonspecific immunity would be lost D. Neither acquired nor nonspecific immunity would be lost
The study of biological diversity and evolutionary relationships among organisms is
A. nomenclature. B. taxonomy. C. ecology. D. systematics. E. biology.
Bryophytes have all of the following characteristics except
A) multicellularity. B) specialized cells and tissues. C) lignified vascular tissue. D) walled spores in sporangia. E) a reduced, dependent sporophyte.
Neurotransmitter is synthesized by (i) _________, released into (ii) ________, and then it binds to neurotransmitter receptor localizing at the membrane of (iii) _______________.
a) (i) presynaptic neuron, (ii) synaptic cleft, (iii) postsynaptic neuron b) (i) postsynaptic neuron, (ii) synaptic cleft, (iii) presynaptic neuron c) (i) postsynaptic neuron, (ii) soma, (iii) presynaptic neuron d) (i) postsynaptic neuron, (ii) dendrite, (iii) presynaptic neuron