External ears are characteristic of:
A.Fishes
B.Amphibians
C.Reptiles
D.Mammals
A.Fishes
B.Amphibians
C.Reptiles
D.Mammals
A.Resembles human blood
B.Circulates in arteries and veins
C.Has haemoglobin in cells
D.Circulates through an open system
A.Jungles of Madhya Pradesh
B.Forests of Western Ghats
C.Gir forests of Gujrat and Kathiawar
D.Kaziranga forests
A.Cuttle-fish
B.Silver-fish
C.Jelly-fish
D.Seahorse
A.Sponges
B.Coelentrates
C.Annelids
D.Molluscs
A.Spicules
B.Spongius fibres
C.Both (a) & (b)
D.None of these
A.Leutic
B.Lotic
C.Benthic
D.Pelagic
A.Sponges and coelentrates
B.Annelids and molluscs
C.Molluscs and arthropods
D.None of these
A.Protozoans
B.Sponges
C.Coelentrates
D.Helminthes
A.Only venous blood
B.Only arterial blood
C.Partly arterial and partly venous blood
D.No blood at all