The organisms responsible for the majority of primary production in marine environments are the copepods
Indicate whether the statement is true or false
FALSE
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A sterile hybrid plant can form a fertile new species if its chromosomes are doubled. This is referred
to as
a. allopatric speciation b. cladogenesis c. a hybrid zone d. anagenesis e. sympatric speciation
A student in a histology class was asked to describe the structure of a stratified squamous epithelium. Which one of the following is the best description?
A) tissue composed of protein fibers in a ground substance and a few cells B) tissue composed of one layer of flat cells located on a basement membrane C) tissue composed of contracting protein fibers enclosed by plasma membranes D) tissue composed of several layers of tall cells resting on a basement membrane E) tissue composed of several layers of flat cells resting on a basement membrane
Explain the features necessary for both brown algae and dinoflagellates to be classified in the supergroup SAR.
What will be an ideal response?
In arid terrestrial environments, salt can accumulate in the soil because of
A. the activities of grazing animals. B. the selective uptake of water by plants. C. the settlement and evaporation of water. D. the secretion of salt by plants. E. the precipitation of salt from dry air.