noun, plural rad·u·lae [raj-oo-lee]. a chitinous band in the mouth of most mollusks, set with numerous, minute, horny teeth and drawn backward and forward over the floor of the mouth in the process of breaking up food.

What does being remarkable mean?

Full Definition of remarkable

: worthy of being or likely to be noticed especially as being uncommon or extraordinary.

What is a radula What is it used for?

The radula is the anatomical structure used for feeding in most species of Mollusca.

What is radula in Class 11?

The radula is an anatomical structure used by molluscs for feeding, which is also sometimes compared to a tongue. The radula is present in the buccal cavity of a mollusc. It is a minutely toothed, chitinous ribbon, that is usually used for scraping or cutting food. ... The radula is a member of the phylum Mollusca.

What does remarkable picture mean?

The definition of remarkable is something unusual, extraordinary or worthy of attention. An example of something that would be described as remarkable is a painting by Picasso. adjective. 14. 6.

Mollusca | Gastropods-Bivalves-Cephlapods |

Who is a remarkable person?

Someone or something that is remarkable is unusual or special in a way that makes people notice them and be surprised or impressed. He was a remarkable man. Synonyms: extraordinary, striking, outstanding, famous More Synonyms of remarkable.

Is remarkable a positive word?

All the terms mentioned so far (memorable, impressive, remarkable, unforgettable, etc.) tend to have positive connotations in the absence of any negative modifier. Memorable is the most neutral of the bunch. For equivalents to memorable that have a negative connotation, you may have to go a little further afield.

Is radula a organ?

Mollusks use a minutely toothed structure called radula for feeding. The radula is called a rasping organ, present in most of the gastropod mollusks. The radula is the toothed chitinous ribbon present in the mouth of most mollusks.

What phylum has a radula?

The radula is present in all molluscs except bivalves, and only in molluscs.

How does the radula move?

Both the radula and the odontophore can be moved forward (protracted) out of the mouth for feeding and brought back in (retracted) to bring in food or when finished eating. This movement is accomplished by sets of protractor and retractor muscles as seen in the diagram to the right.

What is squid radula?

Inside the giant squid's sharp beak is a tongue-like organ called the radula (shown in yellow). Covered with rows of tiny teeth, it rams bite size pieces of food down the squid's throat.

What is radula Why is it called a rasping organ?

Organisms belonging to phylum Mollusca have a rasping organ called radula for feeding. What does Rasping mean? Answer: ... Likewise, the Mollusca rasping organ is a flexible tongue-like organ that is used for scraping or cutting the acquired food, with rows of teeth on the surface.

What does a remarkable woman mean?

It means a woman who stands out compared to other women, usually in a positive sense. " She climbed Mount Everest and won a Nobel Peace Prize." "What a remarkable woman."

How do you use the word remarkable?

1. You're a truly remarkable man. ...
2. He was a man of remarkable literary gifts as well as a good soldier. ...
3. Remember the remarkable Norman Borlaug? ...
4. It is remarkable that we know so much of them as we do. ...
5. Two mountain rescue volunteers descended with remarkable agility to where he crouched.

What kind of word is remarkable?

REMARKABLE (adjective) definition and synonyms | Macmillan Dictionary.

Do snails have radula?

Snails and slugs eat with a jaw and a flexible band of thousands of microscopic teeth, called a radula. The radula scrapes up, or rasps, food particles and the jaw cuts off larger pieces of food, like a leaf, to be rasped by the radula.

Do clams have radula?

Clams, oysters, scallops, and mussels are bivalves. This type of mollusk does not have a radula. They are mostly filter-feeders.

Which mollusc is the largest?

This enormous shellfish, an inhabitant of tropical seas, is the world's largest bivalve mollusc alive today and the heaviest of all living bivalve molluscs. Specimens grow up to 1.3 m and can weigh up to 300 kg.

What does visceral mass mean?

visceral mass: the soft, non-muscular metabolic region of the mollusc that contains the body organs. mantle: the body wall of a mollusc, from which the shell is secreted.

How many teeth are present in each transverse row of radula?

In the daily process of feeding, the radula teeth of chitons are subject to highly abrasive conditions and meet this challenge by replacing each transverse row of teeth every two to three days (Shaw et al., 2002, 2008a) The chiton radula is bilaterally symmetrical around a central rachidian tooth, with (usually) 17 ...

What is the role of radula in Mollusca?

The radula is a special rasping structure found in many molluscs. It is used to scrape and scratch the food and to create depressions in rocks which molluscs use as their habitat. The radula bears many rows of tiny teeth that are replaced as they wear down.

What does quite remarkable mean?

adv. 1 to the greatest extent; completely or absolutely.

Can people be remarkable?

It's not about being famous or making lots of money, it's about making something and giving it away. We see a lot of remarkable people because they are rich and famous. ... You can be a remarkable person too. If you adopt the traits above and put them into practice in your life, you can be remarkable too.

What is synonym for memorable?

momentous, significant, historic, notable, noteworthy, important, consequential, remarkable, outstanding, extraordinary, striking, vivid, arresting, impressive, distinctive, distinguished, famous, celebrated, renowned, notorious, illustrious, glorious.