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Questions and Answers
Which characteristic is unique to arthropods and contributes significantly to their evolutionary success?
Which characteristic is unique to arthropods and contributes significantly to their evolutionary success?
- Open circulatory system
- Triploblastic development
- Bilateral symmetry
- Chitinous exoskeleton (correct)
In arthropods, haemolymph is responsible for transporting oxygen to the body tissues.
In arthropods, haemolymph is responsible for transporting oxygen to the body tissues.
False (B)
Explain how vermicomposting by earthworms alters the composition of organic waste, focusing on carbon and nutrient content.
Explain how vermicomposting by earthworms alters the composition of organic waste, focusing on carbon and nutrient content.
Earthworms reduce carbon content and increase nitrogen, potassium, and phosphorus in organic waste.
The arthropod body is divided into three main regions: the head, the _____, and the abdomen.
The arthropod body is divided into three main regions: the head, the _____, and the abdomen.
Match each term related to arthropods with its correct description:
Match each term related to arthropods with its correct description:
Flashcards
Phylum Arthropoda
Phylum Arthropoda
The largest animal phylum, including all animals with jointed appendages.
Exoskeleton
Exoskeleton
A protective outer structure made of chitin in arthropods.
Haemolymph
Haemolymph
The fluid in arthropods that carries food but not oxygen.
Segmented Body
Segmented Body
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Open Circulatory System
Open Circulatory System
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Study Notes
Phylum Arthropoda
- Arthropoda comes from the Greek words "arthron" (jointed) and "pods" (feet/legs)
- This phylum includes animals with jointed appendages
- This is the largest and most successful animal phylum
- Bodies are triploblastic and bilaterally symmetrical
- Bodies are segmented
- Each segment typically has a pair of legs
- These animals have an exoskeleton made of chitin
- The exoskeleton provides protection and attachment for muscles
- Arthropods exhibit locomotion via swimming, crawling, walking, or flying
- Their circulatory system is an open type called a hemocoel
- Their blood (called haemolymph) does not contain any respiratory pigment, it solely carries food to tissues
Vermicomposting
- Earthworms process organic material into a homogenous mixture called vermicompost
- Earthworms are voracious feeders in this process
- Vermicompost enriches the composition of organic waste and increases nutrient levels (nitrogen, potassium, and phosphorus)
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Description
Arthropoda is the largest animal phylum characterized by jointed appendages and chitinous exoskeletons. They exhibit diverse locomotion methods and have an open circulatory system. Vermicomposting utilizes earthworms to process organic waste into nutrient-rich vermicompost.
