Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
Which of the following characteristics is exclusive to Class Arachnida?
Which of the following characteristics is exclusive to Class Arachnida?
- Body is divided into segments with a pair of legs
- Presence of gills or book lungs for respiration (correct)
- Possession of a pair of antennae
- Oviparous reproduction with no true metamorphosis (correct)
What are the primary appendages found on the head of organisms in Myriapoda?
What are the primary appendages found on the head of organisms in Myriapoda?
- One pair of antennae and one pair of appendages (correct)
- Two pairs of chelicerae
- Four pairs of legs
- Two pairs of pedipalps
Which statement regarding Arachnida is inaccurate?
Which statement regarding Arachnida is inaccurate?
- They are characterized by separate sexes.
- They possess true jaws. (correct)
- They lay eggs directly. (correct)
- They may have segmented abdomens.
How many legs are typically present on organisms belonging to Myriapoda?
How many legs are typically present on organisms belonging to Myriapoda?
Signup and view all the answers
What type of visual system is primarily found in most spiders?
What type of visual system is primarily found in most spiders?
Signup and view all the answers
Study Notes
Class Arachnida
- Body structure includes a fused cephalothorax formed from anterior segments.
- Possesses chelicerae with claws, two pairs of pedipalps, and four pairs of legs.
- Lacks antennae and true jaws.
- Abdomen can be segmented or unsegmented, may or may not have appendages.
- Respiration occurs through gills or specialized structures known as book lungs.
- Excretory system consists of Malpighian tubules.
- Simple eyes present; sexes are separate.
- Reproduces through laying eggs (oviparous).
- Exhibits no true metamorphosis; includes organisms like scorpions, spiders, mites, and ticks.
Myriapoda
- Body is composed of a large number of segments, each typically bearing a pair of legs.
- Head features a pair of antennae and an additional pair of appendages.
- Notable example includes centipedes.
Insects
- Spiders typically have eight eyes arranged to provide a broad panoramic view, aiding in detecting both predators and prey.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore the key characteristics and features of Class Arachnida. From their unique body structure to their reproductive methods, this quiz covers the essentials of these fascinating arthropods. Test your knowledge on their physiology, behaviors, and classification.
