Which of the following cell type is capable of giving rise to other cell types in sponges ?
Thesocytes
Pinacocytes
Cnidocytes
Archaeocytes
Malpighian tubµles are
excretory organs of insects
excretory organs of frog
respiratory organs of insects
endocrine glands of insects
Which of the following is not a character of Chordata?
Dorsal tubular nerve cord
Pharyngeal gill slits
Presence of notochord
Presence of spinal cord
The group of anamniota includes:
reptiles and birds
birds and mammals
fishes and amphibians
reptiles, and mammals
C.
fishes and amphibians
Anamniote are an informal group comprising the fishes and the amphibians. Amnion is an extraembryonic membrane that surrounds an embryo in reptiles, birds and mammals. Anamniotes are vertebrate animals as they lack amnion membrane e.g., fishes and amphibians.