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.
Non-reducing sugars have
free CHO group and bound CO group
free CO group and bound CHO group
both CO and CHO free groups
neither free CO nor free CHO groups