Certain species are very sensitive to disturbances to their environment, and therefore, can be used as an early warning system for environmental degradation that might not otherwise be noted. What are these species called?
a. keystone species
b. invasive species
c. indicator species
d. island species
e. adaptive species
c
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When one plant is shaded by another, why is the ratio of far-red to red light increased compared to an unshaded plant?
A. Phytochrome in the taller plant absorbs most of the red light. B. Auxin absorbs mostly far-red light. C. As light passes through the leaves of the taller plant, most of the red light is absorbed by chlorophyll. D. Far-red light mostly reflects off the surface of the soil while red light is mostly absorbed. E. Shade is enriched in far-red wavelengths of light.
What cell type(s) are found in nervous tissue?
a. neurons only b. glial cells only c. squamous cells only d. both neurons and glial cells e. both glial cells and squamous cells
People who are heterozygous with just one copy of an allele for a recessive disorder do not show symptoms of the disorder. They are considered to be _________ of the disorder.
Fill in the blank(s) with the appropriate word(s).
vitamins which are fat soluable
What will be an ideal response?