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Which animal phylum was the first to have a circulatory system?
Annelida
Is there an animal without symmetry?
Individual organisms are obviously rarely symmetrical themselves, so symmetry is referring to a perfect example of the species. There are 3 types of symmetry present in organisms.The first is bilateral symmetry. This is probably the most common, and it is present in humans. It means that the organism can be cut in half and produce two equal sides in one and only one way.The next is radial symmetry. Radial symmetry means that the animal can be cut in half and produce two equal sides in multiple directions, like a sand dollar or a sea star.The last, which your question is about, is asymmetry. This mean the organism exhibits no symmetry at all. An example of this is something like a common sponge in the class demospongiae. Hope this helps!Animals lacking symmetry are known as asymmetrical. This means they lack spherical, radial, and bilateral symmetry. Most commonly, this can be seen among sponges. (yes, sponges are animals :O )All animals start out with some sort of symmetry but then some lose it as they develop into their adult form. One good example would be the oyster.
Which of the following organisms was the first to show bilateral symmetry A Flatworms B Earthworms C Humans D Jellyfish E Roundworms F Mealworms?
Flatworms
Is a flatworm a amoeba?
bilateralBilateral symmetry (similar right and left body halves, anterior head end and posterior tail end)
What is the body symmetry of hydra?
A hydra has two body shapes. The first one is known as polyp which has tentacles and the other body form is known as medusa.
Which animal adaptation happened first?
Bilateral Symmetry
Which animal adaptation happened before the others?
bilateral symmetryTissue developmentDevelopment of a coelom
What two features are first seen in the planarian?
they have bilateral symmetry and three cell layers ectoderm,endoderm and mesoderm
Which animal phylum was the first to have a circulatory system?
Annelida
Do Cnidarians have radial symmetry and tissues to carry out body functions?
Yes. They are are the first phylum to display cell organization into tissues and the second to desplay radial symmetry.
Is there an animal without symmetry?
Individual organisms are obviously rarely symmetrical themselves, so symmetry is referring to a perfect example of the species. There are 3 types of symmetry present in organisms.The first is bilateral symmetry. This is probably the most common, and it is present in humans. It means that the organism can be cut in half and produce two equal sides in one and only one way.The next is radial symmetry. Radial symmetry means that the animal can be cut in half and produce two equal sides in multiple directions, like a sand dollar or a sea star.The last, which your question is about, is asymmetry. This mean the organism exhibits no symmetry at all. An example of this is something like a common sponge in the class demospongiae. Hope this helps!Animals lacking symmetry are known as asymmetrical. This means they lack spherical, radial, and bilateral symmetry. Most commonly, this can be seen among sponges. (yes, sponges are animals :O )All animals start out with some sort of symmetry but then some lose it as they develop into their adult form. One good example would be the oyster.
In which phylum of marine animals did symmetrical body plans first evolve?
Symmetrical body plans first evolved in the phylum Cnidaria. Cnidarians include jellyfish, sea anemones, and corals, and many of them have radial symmetry. This means that their bodies are organized around a central axis, allowing them to have multiple planes of symmetry.
Which of the following organisms was the first to show bilateral symmetry A Flatworms B Earthworms C Humans D Jellyfish E Roundworms F Mealworms?
Flatworms
What is the difference between a hydra and flatworm?
one is segmented
Which of the animal phyla was the first to evolve three germ layers?
The first animal phylum to evolve three germ layers was the Cnidaria. These germ layers are the ectoderm, endoderm, and mesoderm, found in more complex animals for the development of different structures and organs.
Animal kingdom Name the first phylum that exhibits true tissues?
The first phylum that exhibits true tissues is the Cnidaria phylum, which includes animals like jellyfish and corals. These animals have specialized cells that work together to perform specific functions, marking an important evolutionary development in the animal kingdom.
What type of symmetry do flying mammals have?
All mammals, like all vertebrates, have bilateral symmetry. This means they have symmetry across one plane (known as the sagittal plane, and directly down the centre of their body), which means one side of their body approximately mirrors the other side.
