The correct answer is False! A Penumbra is the lighter outer region of a shadow! Hope this helps! ;D
Answer:
A. It is a process that takes an average of eight minutes for any cell to complete the process.
Explanation:
Cell division (mitosis) only takes about 2 hours. At least, it varies sometime, like the S phase can take up to 5-6 hours.
Contractile vacuole is an organelle will be found in chlorella but not the paramecium.
The lowest metazoans, such as sponges and hydras, and freshwater protozoa have regulating organelles called contractile vacuoles that gather extra fluid from the protoplasm and occasionally release it into the surrounding media. Wastes containing nitrogen may also be excreted.
The contractile vacuole (CV) complex is an osmoregulatory organelle found in free-living amoebae and protozoa that regulates intracellular water balance by storing and excreting excess water, enabling cells to survive under hypotonic stress, like that found in pond water.
To know more about Contractile vacuole here
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Answer:
seeds can be spread by exploding seed pods, wind, water or temperature. the dormant germinat inside a seedcan survive extreme wind and lack of embryo they can travel long distances before they embryo