In population genetics, directional selection is a mode of natural selection in which an extreme phenotype is favored over other phenotype, causing the allele frequency to shift over time in the direction of that phenotype
Answer:
The answer is letter B. Eumetazoa and Lophotrochozoa
Explanation:
Eumetazoa and Lophotrochozoa
Because the phylum Cycliophora neither helps or harms its lobster host.
Options are not provided in the question. The complete question is as following:
Non-photosynthetic species of Euglena are sometimes classified as which of the following?
a. zooflagellates
b. sarcodines
c. water molds
d. pyrrophytes
Answer:
a. zooflagellates
Explanation:
Zooflagellates are non-photosynthetic flagellates which lack cell walls or plastids. The mode of their feeding is by phagocytosis or endocytosis.
Non-photosynthetic species of Euglena are consider as Zooflagellates. Zoomastigophora is a phylum within the kingdom Protista. some of the diseases caused by zooflagellates includes African Sleeping Sickness. they have a spherical, elongated body with a single central nucleus and form a symbiotic relationship with other organisms.
Hence, the correct option is a.
Answer:
hydrogen gas dominated earth's first atmosphere?
Polyp cnidarian form is the characterized by the cylindrical body with which a mouth surrounded by the tentacles at the end of cylinder and opposite where it can attached to the substrate or the colonial tissue
A colony of the single-cell organisms is also known as the colonial organisms. The difference between the multicellular organism and the colonial organism is that the individuals organisms that may form the colony or the biofilm can,
if separated, or survive on their own, while the cells from the multicellular organism (e.g., liver cells) cannot be Colonies usually that do not have the specialized tissues or the organs. Corn is the complex plant that may has many types of the cells that form the tissues and the organs with the different jobs. Each plant is made of the billions of cells
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