Master NEET Zoology with topic-wise questions. Tailored for NEET students, these questions strengthen your Biology preparation.
The radula, a rasping organ found in many molluscs, is primarily composed of:
Calcium carbonate
Chitin
Silica
Keratin
The exoskeleton of arthropods is primarily composed of:
Calcium carbonate
Cellulose
Chitin
Silica
Exoskeleton of which phylum consists of a chitinous cuticle?
Annelida
Porifera
Arthropoda
Echinodermata
The arthropods exoskeleton is composed of
Several kinds of polysaccharides
Layers of proteins and a polysaccharide called chitin
Several kind of proteins
Single complex protein called arthropodin
The entire body of cockroach is covered by
Skin
Shell
Hard chitinous exoskeleton
Keratin
Skeletal system in phylum-Arthropoda is
Endoskeletal spicules structures
Endoskeletal siliceous structures
Exoskeletal calcareous covering
Exoskeletal chitinous covering
If an earthworm is left in 40% KOH solution for a long time, which part would be left undissolved?
Setae
Spermathecae
Sand particles
Circular muscles
