During unfavourable conditions, the sponges form
Cyst
Encyst
Spicle
Gemmule
Related Questions
Which of the following are also known as collar cells?
Choanocytes
Pinocytes
Thesocytes
Cnidoblast
The spongocoel in poriferans is lined with specialized cells bearing flagella. What is the name of these cells?
Choanocytes
Pinacocytes
Amoebocytes
Porocytes
Which of the following animals can successfully reproduce without utilizing the process of mitosis?
Amoeba
Hydra
Tapeworm
Sycon
In sponges, the inner cavity, known as the spongocoel, is lined with cells crucial for filter feeding. Identify these cells.
Choanocytes
Archaeocytes
Spicules
Ostia
Distinctive feature of sponges is
Choanocytes
Coral formation
Multicellularity
Tissue formation
Asexual reproduction in sponges takes place by
Binary fission
Budding
Fragmentation
Encystment
Which one of the following is not a characteristic feature of sponges?
Cellular level of organization
Presence of ostia
Intracellular digestion
Body supported by chitin
Which of the following is present in phylum-Porifera?
Amoebocytes
Thesocytes
Choanocytes
All of these
The canal system is characteristic feature of
Helminthes
Coelenterates
Sponges
Echinoderms
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
