Q. Read the following match about phylum and it's one chatacter:
I. Annelida: First-time true coelom (schizocoelom) present in them.
II. Arthropoda: Only metamerically segmented animals with hemocoel.
III. Echinodermata: Have exoskeleton of calcareous ossicles and spines.
IV. Hemichordata: Small worm-like marine animals with true notochord.
How many from the above is/are the correct match?

 2194  207 NTA AbhyasNTA Abhyas 2020Animal Kingdom Report Error

Solution:

Annelida shows the evidence for the first true coelomates. Arthropoda: Metamerically segmented animals with hemocoel. Metameric segmentation is also present in Annelida and some chordates.
Echinodermata: Have endoskeleton of calcareous ossicles and spines.
Hemichordata: Small worm-like marine animals with stomochord which is not a true notochord.