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Bivalves lack certain structures, such as a radula and tentacles, which are present in other mollusks due to their unique feeding and lifestyle adaptations. Bivalves primarily filter-feed by siphoning water through their shells, making the radula unnecessary for scraping food. Additionally, their body plan has evolved to prioritize a two-part shell and a sedentary lifestyle, resulting in the loss of structures that are more suited for active predation or grazing seen in other mollusk classes.
What else can I help you with?
Which body part is not present in all mollusks?
Vertebral column is not present in all mollusks.
What feature is found in all mollusks bilateral symmetry radial symmetry a hinged shell or the ability to swim?
All mollusks exhibit bilateral symmetry, meaning their body can be divided into two mirror-image halves along one plane. While some mollusks, such as bivalves, have hinged shells, this trait is not universal among all mollusks. Radial symmetry and the ability to swim are also not characteristics found in all mollusks. Thus, bilateral symmetry is the defining feature present in all members of this diverse phylum.
What is the Present Perfect Tense of missing?
The present perfect tense of missing is:I/You/We/They have missed.He/She/It has missed.
Why bivalves are useful environmental indicators organism?
Bivalve's are useful environmental indicator organism because most bivalves are filter feeders specially in polluted area or in a water and they filter most bacteria where polluted area is present.
Mollusks except for the filter feeding bivalves have a specialized feeding organ known as the?
radula. The radula is a tongue-like organ equipped with rows of small, chitinous teeth that are used to scrape or rasp food particles off surfaces. It is primarily found in gastropods such as snails and slugs, but is also present in other mollusk groups like chitons and some cephalopods.
Is missing a present participle or present third person singular?
Present participle.
What is difference between bivalves and univalves?
Valve refers to a shell, so a bivalve possesses two shells, which are usually hinged together and more or less cover the animal (Class Bivalvia), while univalves have only one shell, and typically leave the muscular foot exposed, unless the animal is capable of withdrawing into its shell (Class Gastropoda).
What word means not present or missing?
absent
Explain where the mantle is and what it does for mollusks?
The mantle is the fold of tissue which protects the inside mass. If a shell is not present, then the mantle forms it.
What do you do if a gift card is missing out of your present?
get a new one
What word is Not present?
The missing word. or Perhaps "past".
What part of speech is the word missing?
The word missing is a verb. It is the present participle of the verb miss.
