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katrin2010 [14]
3 years ago
5

A radula is a specialized feeding organ used to scrape material off of a substrate for ingestion, much like a cheese grater scra

pes shreds off of a block of cheese. Snails, which have this structure, are thus which kind of feeder?
Biology
1 answer:
Sergio039 [100]3 years ago
7 0

Answer:

D. mass feeder

Explanation:

A) suspension feeder

B) fluid feeder

C) deposit feeder

D) mass feeder

<em>Suspension feeder requires capturing of food that are suspended in water through the use of specialized organs.</em>

<em>Fluid feeding involves feeding on liquid (such as blood) emanating from other organisms.</em>

<em>Deposit feeding involves feeding on sediments</em>

<em>Mass feeding involves ingestion of scraps of different food materials.</em>

Hence, the correct option is D.

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Answer:

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Explanation:

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Sarcoplasmic reticulum deteriorates and calcium is released into the cytosol. Sarcolemma ( covering of muscle fiber ) also breaks down releasing extra calcium into the cytosol. Calcium is responsible for formation of actin-myosin cross bridge and when its concentration increases the bridge is formed continuously leading to stiffening of muscles and joints.  

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Which came first: land plants or dinosaurs?
Scorpion4ik [409]

Answer:

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Explanation:

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A researcher while working in vitro (outside cell) added helicase enzyme which resulted in the untwisting of the DNA helix. But
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