NTA Abhyas NEET2020BotanyAnimal KingdomPractice
From the following select the characteristic feature that is not correct for Balanoglossus?
Options
- ABelongs to phylum that links non-chordates to chordates.
- BExcretory organ is proboscis gland.
- CCirculatory system is closed type.
- DFertilisation is external.
Correct answer
C. Circulatory system is closed type.
Step-by-step solution
Balanoglosus belongs to the phylum Hemichordata which connects non-chordates to chordates. This wormlike marine animal has organ system level of organisation. The circulation in it is not closed, rather open type. The coelomic evagination within the proboscis is considered as excretory organ. This animals displays external mode of fertilization. It also shows a collar and a trunk as a body part.