Which of these features is NOT characteristic of the class Hexactinellida?
Six-rayed siliceous spicules
Syncytial body structure with trabecular reticulum
Predominantly found in shallow, warm waters
Often exhibit radial symmetry
Related Questions
Choanocytes, specialized flagellated cells responsible for creating water currents and filtering food, are a characteristic feature of which phylum?
Platyhelminthes
Cnidaria
Porifera
Aschelminthes
Which of the following is NOT a characteristic feature of Porifera?
Presence of choanocytes
Presence of a true coelom
Body supported by spicules or spongin fibres
Mostly marine, asymmetrical body
Which of the following statements is incorrect
logₐ(x⋅y) = logₐ(x) + logₐ(y)
logₐ(x/y) = logₐ(x) - logₐ(y)
logₐ(xʸ) = y * logₐ(x)
(aᵇ)ᶜ = a⁽ᵇ⁺ᶜ⁾
Which phylum is characterized by a meshwork of cells, internal cavities lined with flagellated cells for food filtering, and indirect development?
Porifera
Cnidaria
Platyhelminthes
Annelida
The larval stage in sponges is distinct from the adult form. This type of development is known as:
Direct development
Asexual reproduction
Regeneration
Indirect development
An organism has a body with a network of cells, flagellated cells lining internal spaces for filtering food, and undergoes indirect development. To which phylum does it likely belong?
Ctenophora
Porifera
Nematoda
Echinodermata
Which of the following features is NOT associated with the phylum Porifera?
Meshwork of cells
Internal cavities lined with flagellated cells
Indirect development
Presence of a true coelom
