Leucosolenia and Sycon both belong to the Calcarea class. What is a key skeletal difference that distinguishes these two genera?
Leucosolenia lacks spicules, while Sycon possesses them.
Leucosolenia has a siliceous skeleton, while Sycon has a calcareous skeleton.
Leucosolenia has only asconoid organization, while Sycon exhibits syconoid organization.
Leucosolenia reproduces sexually, while Sycon reproduces asexually.
Related Questions
Choanocytes in ascon type of canal system form lining of
Porocyte
Incurrent
Apopyle
Spongocoel
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
Canal system in Porifera is not concerned with
Food collection
Respiration
Excretion
Locomotion
The internal buds of freshwater sponges are otherwise called.
Choanocyte
Gemmule
Osculum
Blastula
Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?
Penguin is homeothermic, while the remaining three are poikilothermic
Leech is a fresh water form, while all others are marine
Spongilla has special collar cells called choanocytes, which are not found in the remaining three
All are bilaterally symmetrical animals
Water enter into spongocoel through
Osculum
Choanocytes
Ostia
Madreporite
The canal system is characteristic feature of
Helminthes
Coelenterates
Sponges
Echinoderms
Choanocytes form the lining of paragastral cavity in
Jelly fish
Sponges
Helminthes
Echinoderms
Excretion in phylum-Porifera is
Ureotelic
Uricotelic
Ammoniotelic
Aminotelic
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
