mRNA is a molecule of
A. single-stranded RNA
B. double-stranded RNA
C. Peptide
D. Circular RNA
Which cells in sponges are called ‘collar cells’?
A. Pinacocytes B. Spongocytes C. Choanocytes D. Grey cells ANSWERC. Choanocytes.Choanocytes or collar cells are…
Which is a Schizocoelomate ?
A. Molluscs B. Chordates C. Hemichordates D. Echinoderms ANSWERA. MolluscsBased on the mode of formation…
Organ level of organisation appears for the first time in the Phylum
A. Cnidaria B. Nematodes C. Platyhelminthes D. Sponges ANSWERC. Platyhelminthes
Which is a flagellated collar cell that create and maintain water flow through the sponge?
A. Pinacocytes B. Spongocytes C. Rhabdiferous cells D. Choanocytes ANSWERD. ChoanocytesChoanocytes – are flagellated collar…
Tissue level of organisation starts from
A. Cnidaria B. Nematodes C. Molluscs D. Sponges ANSWERA. CnidariaTissue level of organisation is exhibited…
The term species was coined by
A. John Ray B. Huxley and Stricklandt C. Carolus Linnaeus D. Charles Darwin ANSWERA. John…