Which of the following is not a type of simple tissue?
1.collenchyma
2.parenchyma
3.periderm
4.sclerenchyma
3
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An organism that acquires energy from the sun and uses C6H12O6 as a carbon source would be classified as a:
A. photoautotroph B. chemoautotroph C. photoheterotroph D. chemoheterotroph
During meiosis, a defect occurs in a cell that results in the failure of microtubules, spindle fibers, to bind at the kinetochores, a protein structure on chromatids where the spindle fibers attach during cell division to pull sister chromatids apart
. Which of the following is the most likely result of such a defect? A) New microtubules with more effective binding capabilities to kinetochores will be synthesized to compensate for the defect. B) Excessive cell divisions will occur resulting in cancerous tumors and an increase in the chromosome numbers known as polyploidy. C) The defect will be bypassed in order to and ensure normal chromosome distribution in the new cells. D) The resulting cells will not receive the correct number of chromosomes in the gametes, a condition known as aneuploidy.
Which one of the following is false concerning intraspecific hybrids?
A. An intraspecific hybrid is the offspring of two separate genetic lines. B. Intraspecific hybrids result from asexual reproduction. C. Selective breeding produces intraspecific hybrids for improved agricultural yields. D. An intraspecific hybrid can contain desirable characteristics from two different strains.
What is NOT a feature of a prokaryotic cell?
A) A nuclear membrane B) Ribosomes C) DNA D) A plasma membrane E) Enzymes