Mark te given statements True (T) or False (F)
(i) All members of animalia are multicellular.
(ii) Sponges exhibit tissue grade level of body organization
(iii) A complete digestive system has two openings, mouth and anus.
(iv) Annelids are pseudocoelomate animals.
(v) notochord is an endodermally derived structure.
(vi) all vertebrates are chordates.
(vii) all chordates are vertebrates
(viii) Polyps produce medusae asexually and medusae form the polyps sexually.
(ix) Hooks and suckers are present in non parasitic flatworms
(x) Lamprey dies after few days of spawning.

Answer

Let's analyze each statement step by step to determine whether they are True (T) or False (F):

1. **Statement (i): All members of animalia are multicellular.**
- **Analysis:** This statement is true because all members of the kingdom Animalia are indeed multicellular organisms.
- **Conclusion:** **True (T)**

2. **Statement (ii): Sponges exhibit tissue grade level of body organization.**
- **Analysis:** This statement is false. Sponges have a cellular level of organization and do not have true tissues.
- **Conclusion:** **False (F)**

3. **Statement (iii): A complete digestive system has two openings, mouth and anus.**
- **Analysis:** This statement is true. A complete digestive system is characterized by having two openings for the intake of food and the expulsion of waste.
- **Conclusion:** **True (T)**

4. **Statement (iv): Annelids are pseudocoelomate animals.**
- **Analysis:** This statement is false. Annelids are coelomate animals, meaning they have a true coelom, not a pseudocoelom.
- **Conclusion:** **False (F)**

5. **Statement (v): Notochord is an endodermally derived structure.**
- **Analysis:** This statement is false. The notochord is derived from mesodermal tissue, not endodermal.
- **Conclusion:** **False (F)**

6. **Statement (vi): All vertebrates are chordates.**
- **Analysis:** This statement is true. All vertebrates belong to the phylum Chordata, which includes organisms with a notochord at some stage of development.
- **Conclusion:** **True (T)**

7. **Statement (vii): All chordates are vertebrates.**
- **Analysis:** This statement is false. While all vertebrates are chordates, not all chordates are vertebrates; some are invertebrates like tunicates and lancelets.
- **Conclusion:** **False (F)**

8. **Statement (viii): Polyps produce medusae asexually and medusae form the polyps sexually.**
- **Analysis:** This statement is true. Polyps can reproduce asexually to produce medusae, and medusae can reproduce sexually to form polyps.
- **Conclusion:** **True (T)**

9. **Statement (ix): Hooks and suckers are present in non-parasitic flatworms.**
- **Analysis:** This statement is false. Hooks and suckers are typically found in parasitic flatworms, not in non-parasitic ones.
- **Conclusion:** **False (F)**

10. **Statement (x): Lamprey dies after few days of spawning.**
- **Analysis:** This statement is true. Many species of lamprey die shortly after spawning.
- **Conclusion:** **True (T)**

### Summary of Answers:
1. (i) T
2. (ii) F
3. (iii) T
4. (iv) F
5. (v) F
6. (vi) T
7. (vii) F
8. (viii) T
9. (ix) F
10. (x) T