The complex interplay of nerve net, cnidocytes, and myoneme cells in Cnidaria is PRIMARILY crucial for which of the following functions?
Regeneration and asexual reproduction
Maintaining osmotic balance
Capturing prey and defense
Symbiotic relationships with other organisms
Related Questions
The main nitrogenous waste of Hydra, is
Ammonia only
Urea only
Uric acid only
Both (a) and ©
Metagenesis refers to:
Presence of a segmented body and parthenogenetic mode of reproduction
Presence of different morphic forms
Alternation of generation between asexual and sexual phases of an organism
Occurrence of a drastic change in form during post-embryonic development
How many of the following are characteristic of at least some members of the phylum cnidaria?(A) A gastrovascular cavity (B) A Polyp stage (C) A Medusa stage (D) Cnidocytes (E) A Peudocoelom
One of these
Two of these
Three of these
Four of these
Highest degree of polymorphism is found in
Major Histocompatibility Complex (MHC)
Blood Group Antigens
Ribosomal RNA Genes
Cytochrome P450 Enzymes
Which cnidarian class includes organisms that exist predominantly in the polyp form?
Hydrozoa
Scyphozoa
Cubozoa
Anthozoa
The skeleton of corals is composed of
Siliceous spicules
Calcium sulphate
Calcium carbonate
Potassium sulphate
‘Portuguese man of war’ is
Obelia
Physalia
Aurelia
Branchiostoma
Regeneration in Hydra will be faster, if it is cut off from
Head region
Mid-body region
Basal disc
Tentacles
Sea fan belongs to
Coelenterata
Porifera
Echinodermata
Mollusca
Which of the following features is NOT characteristic of the phylum Cnidaria?
Tissue level of organization
Presence of cnidoblasts
Diploblastic body plan
Triploblastic body plan
