Question

From the following options, choose the incorrectly matched examples and key characteristics.

• A.

  Phylum	Examples	Key characteristics
  Mollusca	Pila, Aplysia	1. Unsegmented body 2. Usually dioecious and oviparous with indirect development

• B.

  Phylum	Examples	Key characteristics
  Echinodermata	Antedon	1. Excretory system absent 2. Fertilisation external and development is indirect

• C.

  Phylum	Examples	Key characteristics
  Hemichordata	Balanoglossus, Saccoglossus	1. Deuterostomic 2. Are included in phylum chordata

• D.

  Phylum	Examples	Key characteristics
  Aschelminthes	Wuchereria, Ancylostoma	1. Dioecious 2. Often the females are longer than males

Answer 1

Answer: (C)

Hemichordates are deuterostomic and the pattern of coelom development is enterocoely.