Question : Which of the following animals have a single opening in their digestive system that serves both as a mouth and an anus?

Option 1: Arachnids

Option 2: Echinoderms

Option 3: Platyhelminthes

Option 4: Arthropods

Question : Identify the animal that does not have bilateral symmetry.

Option 1: Annelida

Option 2: Molluscs

Option 3: Arthropoda

Option 4: Cnidarian

Question : Identify an example of diploblastic animals.

Option 1: Platyhelminthes

Option 2: Arachnids

Option 3: Chordates

Option 4: Coelenterates

Question : Identify the organism that is not a pseudocoelomate.

Option 1: Ancylostoma

Option 2: Ascaris

Option 3: Wuchereria

Option 4: Scorpions

Question : Select the incorrect statement about Phylum Arthropoda.

Option 1: Class Insecta is the largest class of Phylum Arthropoda.

Option 2: Lignin is the main component of the exoskeletons of Arthropods.

Option 3: Over 85% of all known animal species are Arthropods.

Option 4: Phylum Arthropoda comprises a wide diversity of animals with hard exoskeletons and jointed Appendages.