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Think of the water-vascular system. the organs are: stone canal, ring canal, radial canals, ampullae, and the madreporite plate. i had this question on my 7th grade science lab? (:
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Echinoderms is prokaryote or eukaryote?
Echinoderms are eukaryotes, an ideal exmple being statfish. This group of organisms are seen to have a rather rough epidermal surface.
An organism that can only be seen with a microscope?
if an organism can only be seen though a microscope , what is most likely true of that organism
What is formed by group cells which work together as organs in organ systems?
Groups of cells that work together are called tissues.
Which organisms can only be seen with microscope?
Any organism that is too small to be seen by the naked eye must be seen through a microscope. These small organisms are called microorganisms. Bacteria and spermatozoa are examples of microorganisms that we can only view through a microscope.
Can chromosomes be seen only during cell division?
yes
What do cilium's do?
cilium helps in swimming locomotion. they are seen in protozoans like vorticella, paramecium
What does cilium do?
cilium helps in swimming locomotion. they are seen in protozoans like vorticella, paramecium
Which organs are only visible from the posterior view of the invisible woman?
None, if she's then she cannot be seen! RETARD!
Echinoderms is prokaryote or eukaryote?
Echinoderms are eukaryotes, an ideal exmple being statfish. This group of organisms are seen to have a rather rough epidermal surface.
Show pictures of worms with legs?
Ever seen one? No, some might have bristles though..that are tiny projections made for locomotion
Do starfish have spines?
This is a weird hypothesis that I thought up when I was renaming some paper pdfs I've collected. It was inspired by a speculation I've seen that vertebrate side fins / limbs are ectopic tails; this was inspired by how limbs express Hox genes that are also expressed in tails. Ectopic tails may be able to form more easily because vertebrate tails extend past the anus, which is to the rear of most of the internal organs. Compare the situation of arthropods, annelids, and others, where the anus is at the absolute rear of the body, with no tail extending past it. Post-anal tails are shared by other chordates and by hemichordates. Which leaves echinoderms the remaining group of deuterostomes; the aforementioned terminal-anus animals are protostomes. How chordates, hemichordates, and echinoderms are related has been revised as a result of molecular evidence. An obvious overall-feature tree is: ((chordates, hemichordates), echinoderms) But molecular evidence suggests: (chordates, (hemichordates, echinoderms)) Which suggests that post-anal tails are an ancestral feature of deuterostomes, meaning that echinoderms have had an ancestor with them. But where might we find such a feature in living ones? Consider starfish and brittle-star anatomy. A starfish has a central disc with most of the internal organs, and with five arms radiating outwards. The mouth is on the bottom of the disc, the anus on the top. And those arms could possibly have originally been extra tails; their anatomy fits, since like chordate and hemichordate tails, they have only a limited set of internal organs. The main problem with the five-tail hypothesis is how the other echinoderms fit in; they also have radial symmetry, but they do not have comparable limbs. Info from internet
Most unicellular organisms can only be seen with a?
They can only be seen with a microscope.
Which of the following organs is noticeably more prominet in men than in women?
An organ that is much more noticeable in men than women is the larynx. This is also called the "Adam's apple". Other organs in only men that can be seen are the penis and testicles.
Is Orion seen only in the winter?
Orion is seen only in the winter season. It is a constellation.
What is the only layer of earth that people have actually seen?
The only layer we have seen is the crust, or outermost layer.
Is the moon ever seen during the day?
yes but only part of it is seen,and seen foggy
What moons can be seen from earth?
Only our moon ("The Moon") can be seen from Earth.
