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The polyp uses its tentacles primarily for capturing prey and defense. These tentacles are equipped with specialized stinging cells called nematocysts, which can inject toxins into potential threats or prey. When food comes into contact with the tentacles, the polyp contracts its tentacles to bring the prey towards its mouth, facilitating feeding. Additionally, the tentacles can serve as a sensory organ, helping the polyp detect its environment.
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How do corals capture their prey?
Each coral polyp uses stinging tentacles which they wave to capture passing zooplankton, including copepods and fish larvae.
Describe the physical characteristics of a coral polyp?
A coral polyp is a tubular sack-like animal with a central mouth surrounded by a ring of tentacles. The end opposite the tentacles, called the base, is attached to the substrate.
What animal has tentacles and a mouth facing up like an anemone?
medusoid (medusa)
What do the two body forms of cnidarians look like?
Cnidarians have two main body forms: the medusa form, which is free-swimming and umbrella-shaped, and the polyp form, which is stationary and tube-shaped. Medusae have tentacles around the edge and a central mouth, while polyps have a columnar body with tentacles surrounding a central mouth.
How does a coral polyp feed?
When a coral is feeding ,the tentacles of the coral polyps wave around in the sea water to catch very small animals which drift by in the water currents polyp also has tiny plants (microscopic algae) living inside it's tissue algae living inside uses the sunlight and the waste products of the polyp to make food.
Explain the difference between a polyp and a Medusa?
A polyp is anchored to substrate, like a rock or piece of coral. Anemones are polyps. They catch food with their tentacles and have the mouth on the upside. A medusa is swimming freely. Jellyfish are medusa stages. They catch food with their trailing tentacles and have the mouth on the downside. You can view polyps as the settled ´plant´ and medusa as the free-floating ´seed´, like in a dandelion. Though they aren´t plants at all, of course.
What is the diffence between polyp and Medusa?
polyp---sea anenome, medusa---jellyfish Phlycabs In plain English a polyp is a cylinder with tentacles at the top. The Hydra looks like a tin can with slender arms coming from the top of its body. This body form does not move and the animals are trappers. The medusa is an umbrella shaped structure with tentacles hanging down from it. The jellyfish is an example. These animals move. During the reproductive stages of the jellyfish there is a time when they take on the polyp form. Then they bud off and become medusa. Nighthawk
Is a free swimming form of a cnidarian called a polyp?
No, a free swimming form of a cnidarian is called a medusa. Polyps are typically attached to a substrate and have a cylindrical body with a mouth surrounded by tentacles at one end. Medusae have a bell-shaped body with tentacles hanging down.
What is the body structure of a cnidarian?
A medusa has a bowl shaped body with stinging cells on the tips of their tentacles. Their mouth is located on the bottom where their tentacles are, and their central cavity is in the middle of their body. A polyp's body is shaped like a vase with stinging cells at the end of their tentacles, and their central cavity in the middle of their body. Their mouth is on the top of their body with their tentacles.
What body part of octopus is used in getting and eating food?
an octopus uses its tentacles to catch food
What are the two phases if coelenterates?
The two phases in the life cycle of coelenterates are the polyp stage and the medusa stage. The polyp stage is characterized by a tubular body with tentacles facing upwards, while the medusa stage is characterized by a bell-shaped body with tentacles facing downwards. These two stages alternate in the life cycle of coelenterates.
What is the dominant stage of the cnidarian shown in the transparency?
The dominant stage of cnidarians is the polyp stage. Polyps are typically attached to a substrate and have a cylindrical body with tentacles surrounding a central mouth. They are the primary stage for feeding and reproduction in the life cycle of cnidarians.
