Answer: The Endosymbiotic Theory states that the mitochondria and chloroplast in eukaryotic cells were once aerobic bacteria (prokaryote) that were ingested by a large anaerobic bacteria (prokaryote). This theory explains the origin of eukaryotic cells.
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Answer:
The rupturing of the seed coat may be included by heat from fire enabling water to enter the seed and start the process of germination
Explanation:
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Stem cells can be defined as the cells that have the ability to form any specialized type of cells. These undifferentiated cells have the potential to differentiate to form the different cell types. These stem cells can be derived either from the embryo or from certain adult tissues. Certain genes are activated in these cells to form a specific type of the cell. Lily used the stem cells so that certain genes can be activated in them to produce the new rod cells.
Hence, the correct answer is 'Option B'.
Answer:
a pure simple substance or chemical element
Explanation:
substance cannot be broken into simpler forms or made again. chemical elements are formed by atoms which cannot be broked into simpler forms. ii hope i helped