BIOLOGY HIGH SCHOOL

You are studying a mysterious organism. The organism has tentacles and is attached to the sea floor. It survives by stinging food and Tatching plankton with its tentacles. What type of invertebrate is this? annelid or arthropod or echinoderm cnidarian or poriferanPLEASE HELP MEEEEEE

Answers

Answer 1

Answer:

Answer:

Cnidarian

Explanation:

Answer 2

Answer:

Answer:

This would be a cnidaria

Explanation:

"any of a phylum (Cnidaria) of radially symmetrical, aquatic, invertebrate animals that have a hollow digestive cavity opening to the outside by a single opening surrounded by one or more nematocyst-studded whorls of tentacles, that occur as single or colonial sessile, typically columnar polyps or usually free-swimming, bell-shaped medusae, and that include the corals, sea anemones, jellyfishes, hydras, and Portuguese man-of-wars" -Mirriam-Webster

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There are different types of nerves or mechanoreceptors located in your skin. Nerves that detect deep pressure are called _____.Merkel's disks
Meissner's corpuscles
Pacinian corpuscles

Answers

Nerves that detect deep pressure are called Pacinian corpuscles.

Pacinian corpuscles are microscopic onion-shaped nerve structures that are situated in the dermis and hypodermis. Pacinian corpuscles detect deep pressure and vibration. This nerve has a myelinated nerve ending in the middle of its structure and the external layer contains flattened cells, a lymph-like fluid and collagen fibers. The structure of pacinian corpuscles provides a fast response and rapid recovery by transmitting fast events. This make them sensitive to pressure and vibration.

Answer:

C.) Pacinian corpuscles

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Justin in looking at 2 chromosomes that have identical alleles for particular trait. these chromosomes are considered what

Answers

Justin is looking at two chromosomes that have identical alleles for particular traits, these chromosomes are considered homozygous. Homozygous alleles are those that have alternative form of a given gene. It may be recessive or dominant. The dominant trait is represeted by capital letters while the recessive trait is represented by small letters.

C. h -> <- h

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A set of characteristics that defines individuals as boys and men or girls and women is called __________.

Answers

A set of characteristics that defines individuals as boys and men or girls and women is called gender. Nowadays, the issue of gender is a very touchy subject, as it is unknown whether sex and gender are interchangeable anymore, the way they used to be.

________________ are hollow tubes of protein that maintain cell shape and permit movement of cell organelles

Answers

Answer:

Microtubules.

Explanation:

The main cytoskeleton of the cell is micro tubules, micro filaments and intermediate filaments. This structure helps to provide the stability and maintains the cell shape.

Microtubules are made of the polymers of tubulin. The microtubules are hollow shape like protein that forms the main part of the cyoskeleton. The microtubules maintains the cell shape and allows the movement of the cellular organelles of the cell.

Thus, the correct answer is microtubules.

Microtubules are hollow tubes of protein that maintain cell shape and permit movement of cell organelles.

Fossils of the first animals are rare because theyA. were large and likely to be eaten by others after they died.

B. lived only in volcanic regions, and were destroyed by lava flows.

C. were soft-bodied and tiny, therefore unlikely to fossilize.

D. had hard shells that broke down easily, leaving no trace