<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:
In biology, students study a variety of life processes and learn how different organisms meet the challenges of living in their environment. Major biological concepts for student focus include homeostasis, energy transfer and use, the relationship between structure and function, and change over time.
Explanation:
It makes it become dry and it stops fertilization.
Due to the <u>mutation </u>accumulation, the <u>binary fission</u> in bacterial population will decrease due to in ability to divide (Due to inactive replicating enzymes). In the similar way, the <u>generation time</u> will also decrease.
Binary Fission- Binary fission, also known as asexual body division into two new bodies, When an organism divides into two halves (cytokinesis) by binary fission, it doubles its genetic material, or DNA, with each new creature acquiring one copy of the latter.
Generation Time- The amount of time it takes for a colony of bacteria to double in size is known as the generation time. The generation period for various bacteria ranges from a few minutes to many hours. Bacteria multiply by geometric progression because of binary fission.
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Answer:
C. Organisms are now divided into three kingdoms.
Explanation:
In the early 1860s, a German scientist named Ernst Haeckel suggested using a three kingdom system of classification. Haeckel's three kingdoms were Animalia, Plantae, and Protista.