Question

what are the characteristics of phylum
1 annelida
2 arthropods
3 mollusia
4 echinodermata
5 protochordata
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Answer 1

Answer:

The No.3 Is Mollusca And Not Mollusia And No.2 Is Arthropoda.

Explanation:

Characteristics Of Phyulm Annelida Is:

1. Habitat:- Aquatic Or Terrestrial; free-living and sometimes parasitic.
2. Body:- Elongated, Cylindrical And Segmented
3. True Coeleom Or Body Cavity
4. Organ System Level Of Organisation
5. Triploblastic And Show Bilateral Symmetry
6. Closed Circulatory System
7. Coiled tubular structures, nephridia for excretion.
8. Locomotion In The Form Of setate and parapodia
9. Maybe Uni-Sexual Or Bi-Sexual
10. Direct Development.

Characteristics Of Phylum Arthropoda Are:

1. All Types Of Habitat.
2. External Metameric Segmentation.
3. Bilateral Symmetry
4. Organ system level of organisation.
5. Triploblastic And Body Is Covered With Cuticle.
6. Open Circulatory System i.e blood doesn't flow in well defined blood vessels.
7. Antannae And Eyes Are Present.
8. Green Glands And Malphigian Tubules For Excretion.
9. Internal Fertilisation.
10. Direct And Indirect Development.

Characteristics Of Phylum Mollusca Are:

1. Mostly Marine But Also Found In Damp Soil And Freshwater.
2. Soft-bodied Animals With Protective Shell.
3. Triploblastic And Show Organ System Level Of Organisation.
4. Respiration Occurs By Feather Like Gills etc.
5. Open Circulatory System.
6. Indirect Development May Occur.

Characteristics Of Phylum Echinodermata Are:

1. Free-Living Marine Animals.
2. Both Bilateral And Radial Symmetry.
3. Organ System Level Of Organisation.
4. They Are Triploblastic.
5. Ambulacarl System Helps In Locomotion.
6. Autotomy Or Self Mutilation Takes Place.
7. Indirect Development.
8. External Fertilisation.

Characteristics Of Phylum Protochordata Are:

1. Marine Habitat.
2. Triploblastic.
3. Bilateral Symmetry.
4. New Body Design i.e. notochord.
5. Proper Notochord Not Present At All Stages.

Answer 2

Answer:

option 3 is correct

Explanation: