Is Cnidaria a Protostome or Deuterostome?

Is Cnidaria a Protostome or Deuterostome?

Cnidaria are neither protostomes or deuterostome, as both of these superphylum belong to the Bilateria clade of animals, animals that exhibit…

How do Ctenophores reproduce?

Reproduction In Comb Jellyfish All ctenophora are hermaphroditic – meaning they possess both male and female reproductive organs. A very few species can reproduce asexually. Eggs and sperm are shed into the water and after fertilisation an ovoid larvae develops, called a Cydippid larvae.

Are Ctenophores Diploblastic or Triploblastic?

Both ctenophores and cnidarians have a type of muscle that, in more complex animals, arises from the middle cell layer, and as a result some recent text books classify ctenophores as triploblastic, while others still regard them as diploblastic.

Which of the following are characteristics of Ctenophores?

Phylum Ctenophora Characteristics

• They are free-swimming, marine, solitary, pelagic animals.
• The body is transparent, gelatinous, pear-shaped, cylindrical, or flat or ribbon-shaped.
• They have a biradially symmetrical body along an oral-aboral axis.

Are Mollusca Protostome or Deuterostome?

These phyla are divided into two groups based on their pattern of embryonic development: the protostomes and the deuterostomes. Flatworms, roundworms, mollusks, and annelids are all protostomes.

Are phylum porifera Protostome or Deuterostome?

Porifera, the sponges, and cnidaria, the jellies and kin, are actually neither. Determining Protostome or deuterostome for phyla? They are diploblastic animals with two layers, the outer dermal layer and the inner gastral layer.

Are ctenophores Monoecious or dioecious?

2 long unbranched tentacles, they are luminescent with light-emitting cells. The tentacles on ctenophores have _____ and ____? Are ctenophores monoecious or dioecious? Monoecious (individuals can produce male and female gametes.)

How do ctenophores feed?

The lobate ctenophores have two flattened lobes that reach below their mouths. Special cilia waving between the lobes generate a current to pull planktonic food between the lobes and into the jelly’s mouth, allowing them to feed on plankton continuously. They also use colloblast-lined tentacles to catch food.

Are Ctenophores Monoecious or dioecious?

Are Mollusca diploblastic or triploblastic?

Mollusca are the second largest animal phylum. They are terrestrial or aquatic. They exhibit organ-system level of organization. They are bilaterally symmetrical, triploblastic, coelomate animals.

Which type of body Organisation occurs in ctenophores?

Question : Which type of body organisation occurs in ctenophores?

Is Mollusca a Deuterostome?

Molluscans are protostomes. Their mouth arise from the embryonic blastopore. The blastopore becomes mouth in protostomes (i.e. mouth appeared first) while in deuterostomes it forms anus (i.e. mouth appears later). Please read this answer as well.

What is the difference between deuterostome and protostome?

Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development. B. Protostomes are animals in which the anus develops from the blastopore, and the mouth develops from the second opening.

Are brachiopods protostome or pseudocoelomates?

-Brachiopods *Distinguished by lophophore (fold of body wall w/ ciliated tentacles around mouth) for filter feeding -Molecular bio suggests protostome, but embryonic development suggests deuterstome -pseudocoelomates

What is the difference between the acoel worm and platyhelminth?

A. The acoel worm would be solid throughout, it lacks a permanent gut. B. The acoel worm would have a nervous system. C. The platyhelminth would have a fluid filled pseudocoel. D. Only the acoel is triploblastic. Pseudocoelomate nematodes lack a body cavity. A. Correct, their pseudocoel does not allow for the development and expansion of organs.