Which of the following molluscs produces pearl:
A.Lamellidens
B.Solen
C.Pinctada
D.None of these
A.Lamellidens
B.Solen
C.Pinctada
D.None of these
A.Mouth
B.Legs
C.Salivary glands
D.Posterior part of abdomen
A.Platyhelminthes
B.Nematoda
C.Arthropoda
D.Echinodermata
A.Having two pairs and one pair of legs per segment respectively
B.Having 2 pairs of eyes and one pair of eyes respectively
C.Having small and large size respectively
D.None of these features
A.Only in Zoos
B.Only in India
C.Only in Africa
D.Both (b) & (c)
A.Tape-worms and scorpions
B.Earthworms and mosquitoes
C.Ship-worms, round-worms and star-fish
D.None of these
A.All protozoans have acellular body
B.All snakes are poisonous
C.Allmammals are viviparous
D.All echinoderms are strictly marine animals
A.Annelids
B.Molluscs
C.Nematodes
D.None of these
A.Earthworm
B.Leech
C.Both (a) & (b)
D.None of these
A.Annelids
B.Reptilia
C.Amphibia
D.None of these