Answer:
Cnidaria
→ Organisms have specialized stinging cells
→ Two type of body plans exist - polyp and medusa
Porifera
→ Organisms lack symmetry
→ Adult forms are sessile
→ Organisms obtain food by filtering water
→ Phenomenon of alternation of generation is observed.
Explanation:
Cnidaria, also known as the coelenterata, is a phylum of mostly marine animals having about 9,000 living species. Some of them include the corals, hydras, jellyfish, sea anemones, sea whips, etc. They possess specialized cells known as cnidocytes ( also known as “stinging cells”). These cells can seen around the mouth and tentacles cnidarian. They immobilize their prey with toxins. These Cnidaria have two body plans and which are polyp and medusa.
The phylum Porifera are known as the pore bearers. It has about 5000 species. Their adult forms are sessile. They live permanently attached to rocks. They can under alternation of generation. They possess no organs in their bodies. Also, they lack symmetry. They can be referred t as filter feeders because they obtain food by filtering water.
Answer:
Radiation is a heat wave that mostly comes from the sun and converts into some objects making them hot.
Explanation:
Jean- Baptiste Lamarck said that organisms work toward perfection, acquire the physical traits that their parents had, and if they don't use some body part then it will disappear. ... could be generalized to any population of organisms.
The parents are heterozygous, meaning that each parent carries both a dominant and a recessive fur gene. The dominant gene makes them phenotypically express brown fur, but allows them to pass on the recessive gene to their offspring.
Answer any of the following questions:What causes the phases of the moon?
When the moon is waning, the visible part of the moon is
A) getting smaller
Which of the following is true of the relationship between the moon and the Earth?
D) The moon revolves around the Earth.
Which statement is true?
B) The moon revolves around the earth faster than it rotates.
