Get the answer of: Is Balanoglossus a 'Forerunner' of Chordates. According to any standard dictionary 'forerunner' means 'one who runs ahead' or 'messenger sent before'. So the claim that 'Balanoglossus is a forerunner of chordates' signifies that it stands at the pivotal stage in the direct line of chordate evolution. But this claim is not universally accepted nowadays. This is [...]
In this article we will discuss about Herdamania:- 1. Habit and Habitat of Herdamania 2. External Structures of Herdamania 3. Body Wall 4. Coelom and Atrium 5. Locomotion 6. Digestive and Respiratory Systems 7. Circulatory System 8. Excretory System 9. Nervous System 10. Reproductive System 11. Affinities and Systematic Position. Contents: Habit and Habitat of Herdamania External Structures of Herdamania [...]
Let us learn about the comparison of ciliary mode between branchiostoma, ascidia and balanoglossus. Comparison # Balanoglossus: 1. Internal food-collection, i.e., food is collected inside the body. 2. Microphages. 3. Wheel organ produces a flow of water-current which is drawn into the mouth. 4. Velum with velar tentacles control the entry of water-current into mouth. 5. The feeding current follows [...]