Which one of the following in birds, indicates, their reptilian ancestry?
Scales on their hindlimbs
Two special chambers crop and gizzard in their digestive tract
Eggs with a calcareous shell
Bilateral symmetry, metameric segmentation, coelom and open circulatory system are the features of
Select incorrect pair
Porifera – Choanocytes
Coelenterata – Nematocysts
Annelida – Segmentation
Monera – Eukaryote
If a child is of O blood group and his father is of B blood group, the genotype of father is
Correctly matched set of phylum, class and example is
Oxyntic cells secrete
Oxyntic cells or parietal cells are large and rounded cells located upon the surface of the gastric gland and secrete HCl and CIF (Castle's Intrinsic Factor). This HCl gives the gastric fluids, a pH of about 2.0.
Gigantism and acromegaly are due to
Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?