Select the correct set of animals of Class- Mammalia.
Lion, bat, whale, ostrich
Whale, bat, kangaroo, hippopotamus
Lion, hippopotamus, penguin, bat
Hippopotamus, penguin, whale, kangaroo
Respiration in Ascaris is
aerobic respiration
anaerobic respiration
Both (a) and (b)
None of the above
Digestion in Leucosolenia and other sponges is
only extracellular
only intracellular
first extracellular, then intracellular
first intracellular, then extracellular
Tube within tube plan is exhibited by which of the following groups of animals?
Arthropods
Cephalochordates
Annelids
Mollusca
Molluscan blood contains
haemoglobin
haemozoin
haemocyanin
All of these
C.
haemocyanin
Haemocyanin is the characteristic respiratory pigment of only Mollusca and some arthropods.