<span>Mollusca have one heart while Annelids have five heartsMollusca can have open circulatory system but Nematoda and Platyhelminthes have closed circulatory systemMollusks are marine creatures while Nematoda and Platyhelminthes are land creaturesMollusks have a more complex system then any other phyla<span>Mollusks have shells, either externally or internally, but phylum such as Cnidarians, Annelids, Nematoda and Platyhelminthes do not
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Answer:
epiglottis
Explanation:
The epiglottis is a flap located behind the tongue. It stays open for the passage of air until a person swallows and it folds over the larynx (air passage to the lungs).
Answer:
C
Explanation:
i searched it up for u
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. ... Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome.
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Plant Characteristics. Plants are autotrophs; they produce their own food. They do so via photosynthesis, which is the process of making nutrients such as sugars from light energy and carbon dioxide.
Please mark as brainliest
Answer:
A. increase the speed of nerve impulses
Explanation:
Schwann cells speed up nerve impulses by secreting a fatty substance called myelin around the axon of peripheral nerves. (Myelin can greatly increase the speed of impulses in neurons because it insulates the axon and assembles voltage-gated sodium channel clusters at discrete nodes along its length.)
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