Where are nematocysts located?

Cnidarians contain specialized cells known as cnidocytes (“stinging cells”), which contain organelles called nematocysts (stingers). These cells are present around the mouth and tentacles, serving to immobilize prey with toxins contained within the cells.

1. Where are the nematocyst found?
2. Where are the 2 main locations of nematocysts?
3. What is the function of a nematocyst and where are they located?
4. Where are nematocysts located on a Hydra?
5. What is nematocyst Class 9 answer?
6. What is nematocyst short answer?
7. Where are the stinging capsules nematocysts located?
8. What is polyp and medusa?
9. What is the main function of nematocysts?
10. What is the structure of nematocysts?
11. How does the hydra use the nematocyst?
12. Is Jelly a medusa or polyp?
13. What are tentacles nematocysts?
14. Is Nematocyst an organ?
15. Which type of reproduction takes place in Hydra?

Where are the nematocyst found?

Nematocysts are found in the phylum Cnidaria, which includes jellyfishes and sea anemone. Also called cnidocyte or cnidoblast, these are specialized cells found in the tentacles of jellyfish capable of projecting a thread-like structure as a form of self-defence or to capture prey.

Where are the 2 main locations of nematocysts?

What are the Two Major Places Where Nematocysts Can Be Found? Ans. Nematocyst cells are found across the mouth and tentacles and are used to immobilise prey by releasing toxins.

What is the function of a nematocyst and where are they located?

The functions of nematocysts are to attack predators. Nematocysts are small stinging cells that are located on the tentacles of jellyfish.

Where are nematocysts located on a Hydra?

HYDRA: INTERESTING FACTS. The tentacles that form a ring around the mouth/anus are covered with stinging cells called nematocysts. These stinging cells can inject toxins upon contact, and are often used for prey capture, defence, and sometimes locomotion.

What is nematocyst Class 9 answer?

Solution. The stinging cells present at tentacles of aquatic animals like jelly fish, hydra, etc in phylum coelenterata is called nematocyst (cnidoblast)

What is nematocyst short answer?

nematocyst, minute, elongated, or spherical capsule produced exclusively by members of the phylum Cnidaria (e.g., jellyfish, corals, sea anemones). Several such capsules occur on the body surface. ... After eversion, the thread separates from the nematocyst.

Where are the stinging capsules nematocysts located?

Sea pen and sea fan are members of the phylum nematocysts. These both belong to Coelenterates. From the above information we have found that stinging capsules are found in sea pens and sea fans. So, option C is the correct answer.

What is polyp and medusa?

There are two basic cnidarian body shapes: a polyp form, which is attached to a surface; and an upside-down free-floating form called a medusa. Some cnidarians change form at different phases of their life cycle, while others remain in one form for their entire life.

What is the main function of nematocysts?

Nematocysts or cnidocysts represent the common feature of all cnidarians. They are large organelles produced from the Golgi apparatus as a secretory product within a specialized cell, the nematocyte or cnidocyte. Nematocysts are predominantly used for prey capture and defense, but also for locomotion.

What is the structure of nematocysts?

The nematocyst structure consists of a globular or egg-shape capsule, made up mainly of mini-collagens and the glycoprotein NOWA, which has an apical aperture closed by a cover (operculum) and an inverted long spiny tubule inside (11).

How does the hydra use the nematocyst?

The largest nematocyst has barbs on the end that anchor the prey to the tentacle from which it was fired. With a firm hold on its prey, the hydra then envelopes the organism, like a sock being pulled over a foot, and consumes it.

Is Jelly a medusa or polyp?

Jellyfish have a stalked (polyp) phase, when they are attached to coastal reefs, and a jellyfish (medusa) phase, when they float among the plankton. The medusa is the reproductive stage; their eggs are fertilised internally and develop into free-swimming planula larvae.

What are tentacles nematocysts?

The tentacles contain a large number of specialized cells called cnidocytes, which contain stinging structures known as nematocysts. The latter vary in shape according to their required purpose.

Is Nematocyst an organ?

Nematocysts are the stinging cells and are the organs of offence and defence of coelenterates, Nematocyst contains a poisonous proteinaceous fluid hypnotoxin along tube which injects the fluid into the victim.

Which type of reproduction takes place in Hydra?

When food is plentiful, many Hydra reproduce asexually by budding. The buds form from the body wall, grow into miniature adults and break away when mature.