NEET Biology: Invertebrate Zoology questions with solutions

Q1. Which of the following phylum do not possess true coelom?

1. Aschelminthes
2. Annelida
3. ctenophora
4. Platyhelminthes

Answer: Platyhelminthes

Platyhelminthes are acoelomates, meaning they lack a true coelom. Annelida have a true coelom, while Aschelminthes are pseudocoelomates.

Q2. Nephridiopores present over the body of earthworm belong to

1. Integumentary nephridia
2. Septal nephridia
3. Pharyngeal nephridia
4. Peptonephridia

Answer: Integumentary nephridia

Nephridiopores are the external openings of nephridia. In earthworm, the nephridia distributed in the body wall and opening to the outside are integumentary nephridia, so they are the ones associated with nephridiopores over the body.