The echinoderms, hemichordates and chordates had which of the following larva as common ancestral form [APMEE 1996; BHU 1999; CBSE PMT 2001]
A) Tornaria
B) Trochophore
C) Dipleurula
D) Bipinnaria
Answers
ANSWER :
The correct answer of the given question will be (C) Dipleurula.
Hence, the right choice is option (C).
OTHER POINTS -
1. This larva exhibits bilateral type of symmetry of their body.
2. They possess cilia which helps them to catch prey to feed themselves.
3. For their locomotion, they possess some longitudinal ciliated band.
4. They also have 3 sacs of coelom.
5. Their body has the shape of an egg.
ANSWER :
The correct answer of the given question will be (C) Dipleurula.
Hence, the right choice is option (C).
OTHER POINTS -
1. This larva exhibits bilateral type of symmetry of their body.
2. They possess cilia which helps them to catch prey to feed themselves.
3. For their locomotion, they possess some longitudinal ciliated band.
4. They also have 3 sacs of coelom.
5. Their body has the shape of an egg.