Answer:
The correct answer is - sea cucumber.
Explanation:
Hydra, aurelia, and sea anemone belong to Phylum - Coelenterata or cnidaria while sea cucumber is a member of echinoderms. Cnidaria is radially symmetrical, free-swimming or fixed, aquatic and solitary or colonial animals. While sea cucumber are animals like starfish or sea urchin.
They found on the seafloor and have pentaradial symmetry however, developes bilateral symmetry later.
The best and most correct answer among the choices provided by the question is the third choice "<span>Epigenetic changes of mother cells are generally maintained in daughter cells; however, they are susceptible to environmental influences." </span>I hope my answer has come to your help. God bless and have a nice day ahead!
B. A punnet square is a chart that can be drawn to show the possible allelic combinations that can be present in the offspring based on the alleles of respective genes that parents had passed down through their gametes.
The correct answer is - B. Mitosis produces two diploid daughter cells, while meiosis produces four haploid daughter cells.
The processes of mitosis and meiosis are often confused with one another, mostly because of the similarity in their names.
The mitosis is a type of cell division where the end result is two daughter cells, each of the cells has the same number and kind of chromosomes as the parent nucleus. Thus is typical for the growth of tissue.
The meiosis is a type of cell division where the end result is four daughter cells, each of the cells having half the number of chromosomes of the parent nucleus. This is typical for the gametes and the plant spores.
Hi there!
A prezygotic isolating mechanism is a mechanism that causes something to happen, not allowing the organisms to breed before fertilization. I'll explain each one for you.
A - That is postzygotic because the organisms were not stopped before fertilization. The result is a sterile organism.
B - Again, that is postzygotic because the organism was produced.
C - This is prezygotic! The sperm dying shows that something is in action to prevent fertilization, meaning that it cannot happen.
D - Fertilization was successful, so it is postzygotic.
ANSWER:
C - the sperm dies when it reaches the female tract
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