As of my last knowledge update in January 2022, I don’t have specific information about a book titled “A Manual of Practical Zoology Chordates” by Dr. P.S. Verma. It’s possible that the book was published after that date or that it’s a less widely known publication.

However, if this is a valid book, it would likely be a manual designed for students and individuals studying zoology, specifically focusing on chordates. Here’s a general overview of what such a manual might typically include:

1. Taxonomy and Classification:
   • The manual may provide detailed information about the classification and taxonomy of chordates, covering different classes and orders within the phylum.
2. Anatomy and Morphology:
   • Detailed descriptions and illustrations of the anatomy and morphology of various chordates, including the structural features that define this phylum.
3. Physiology:
   • Discussions on the physiological processes of chordates, including circulatory, respiratory, digestive, and excretory systems.
4. Life Cycle and Reproduction:
   • Information on the life cycles of different chordates and the various reproductive strategies employed by different species.
5. Ecology and Behavior:
   • Insights into the ecological roles of chordates and their behavior in different habitats.
6. Laboratory Techniques:
   • Practical instructions for conducting experiments and dissections related to chordate zoology. This may include guidance on specimen preparation, observation, and data recording.
7. Comparative Anatomy:
   • Comparative analyses of chordate anatomy, highlighting similarities and differences among various groups.
8. Evolutionary Biology:
   • Discussions on the evolutionary relationships and trends within the chordate phylum.
9. Conservation and Biodiversity:
   • Consideration of conservation issues related to chordates and discussions on biodiversity within the phylum.
10. Field Studies:
    • Guidance on conducting field studies related to chordates, including observation techniques and data collection.

Remember, the actual content may vary, and the best way to understand the specifics of the manual is to refer to the book itself. If “A Manual of Practical Zoology Chordates” by Dr. P.S. Verma exists, you might find it beneficial for academic studies in the field of zoology, particularly in the context of chordates.