Which of the following statements is correct?

Options

A. Now hemichordate has been placed under nonchordates because of absence of notochord
B. Saccoglossus is a hemichordate
C. Hemichordate is worm-like marine animal
D. All

Answer

To determine which of the statements about hammycodates is correct, we can analyze each statement step by step:

1. **Statement 1: Hammycodates have been placed under non-codates because of the absence of a notochord.**
- The notochord is a defining characteristic of chordates (codates). Since hammycodates lack a notochord, they are classified under non-codates. This statement is correct.

2. **Statement 2: Saccoglossus is a hammycodate.**
- Saccoglossus is indeed a member of the phylum Hemichordata, which includes hammycodates. Therefore, this statement is also correct.

3. **Statement 3: Hammycodates are worm-like marine animals.**
- Hammycodates, including Saccoglossus, exhibit a worm-like body structure and are primarily found in marine environments. This statement is correct as well.

4. **Statement 4: All of the above statements are correct.**
- Since all three previous statements have been determined to be correct, this statement is also correct.

### Conclusion:
The correct answer is **Option 4: All of the above statements are correct.**

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