A large seaweed that floats freely on the surface of deep bodies of water would be expected to lack which of the following?
A) thalli
B) bladders
C) holdfasts
D) gel-forming polysaccharides
C
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What is the most general and important effect of the evolution of cyanobacteria, photosynthetic
“protists” and plants?
What will be an ideal response?Which of the following is not true of an organism's genotype?
A. It contains structural genes that code for proteins. B. It has expressed traits governed by the genes. C. It contains genes that code for RNA. D. It has regulatory genes that control gene expression. E. It is inherited.
A food chain always begins with
A. sympathetic decomposers. B. photosynthetic autotrophs. C. pathetic instructors. D. heterotrophic consumers.
Most of the oligotrophic proteobacteria are found in the ________.
A. alpha proteobacteria B. delta proteobacteria C. beta proteobacteria D. gamma proteobacteria