Invertebrates Overview Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which group of animals constitutes 95 percent of known organisms in the animal kingdom?

  • Invertebrates (correct)
  • Mammals
  • Birds
  • Vertebrates

Porifera, or sponges, have a brain and a complex organ structure.

False (B)

What is the primary function of the pores on a sponge's body?

To absorb water and oxygen and discard waste.

Coelenterates, like jellyfish, are primarily found in ______ environments.

<p>marine</p> Signup and view all the answers

Which of the following does NOT belong to the group of coelenterates?

<p>Earthworm (A)</p> Signup and view all the answers

Worms breathe through their mouths.

<p>False (B)</p> Signup and view all the answers

What role do worms play in agriculture?

<p>They nourish the soil by decomposing organic matter.</p> Signup and view all the answers

Match the following invertebrates with their characteristics:

<p>Porifera = Lack brains and organs, absorb water through pores Coelenterates = Feed through an opening surrounded by tentacles Worms = Long, soft bodies that breathe through skin Jellyfish = Produce toxins to paralyze prey</p> Signup and view all the answers

What characteristic is common to all arthropods?

<p>Presence of exoskeleton (C)</p> Signup and view all the answers

Mollusks can only reproduce asexually.

<p>False (B)</p> Signup and view all the answers

Name one example of a mollusk that has a hard external shell.

<p>garden snail</p> Signup and view all the answers

Echinoderms have a _______ and spiny surface.

<p>rigid</p> Signup and view all the answers

Match the following groups with their characteristics:

<p>Mollusks = Soft body, some have shells Arthropods = Exoskeleton and jointed legs Echinoderms = Spiny skin and rigid surface</p> Signup and view all the answers

Which of the following statements about echinoderms is true?

<p>They are cold-blooded and live in water. (C)</p> Signup and view all the answers

Arthropods have more than two antennae.

<p>False (B)</p> Signup and view all the answers

What is the body division found in arthropods?

<p>cephalothorax and abdomen</p> Signup and view all the answers

Flashcards

Invertebrates

Animals without backbones.

Porifera (Sponges)

Simple aquatic invertebrates with porous bodies; they filter feed.

Coelenterates

Aquatic invertebrates with a central body opening and tentacles.

Worms

Invertebrate animals with long, soft bodies. Some have ring-like segments.

Signup and view all the flashcards

Aquatic Invertebrates

Invertebrates that live in water.

Signup and view all the flashcards

Invertebrate Groups

Invertebrates are divided into various groups, including Porifera, Coelenterates, and Worms.

Signup and view all the flashcards

Filter Feeding

Obtaining food by filtering water, like sponges do.

Signup and view all the flashcards

Invertebrate Abundance

Invertebrates make up a large percentage of animal life.

Signup and view all the flashcards

Mollusks

Animals with soft bodies; some have shells (e.g., snails, clams, squid).

Signup and view all the flashcards

Mollusks Reproduction

Mollusks can reproduce both sexually and asexually.

Signup and view all the flashcards

Arthropods

Animals with exoskeletons, segmented bodies, and jointed appendages.

Signup and view all the flashcards

Arthropod Groups

Arthropods are grouped into Insects, Arachnids, Crustaceans, and Myriapods.

Signup and view all the flashcards

Echinoderms

Spiny-skinned animals that live in the water (e.g., starfish, sea urchins).

Signup and view all the flashcards

Echinoderm Habitat

Echinoderms live in water.

Signup and view all the flashcards

Arthropod Exoskeleton

A hard outer covering that protects arthropods.

Signup and view all the flashcards

Arthropod Movement

Arthropods move with jointed appendages, legs, and antennae.

Signup and view all the flashcards

Study Notes

Invertebrates

  • Invertebrates make up 95% of known organisms in the animal kingdom
  • They are multicellular animals that lack a backbone
  • They are divided into six groups

Porifera (Sponges)

  • Unusual organisms, resembling plants, but are invertebrates
  • Simple body structure, lacking tissues, organs, brain, blood, and muscles
  • Vary in color, size, and shape
  • Live in aquatic environments (freshwater or saltwater)
  • Young forms are mobile larvae, but adults are sessile (don't move)
  • Obtain food and oxygen from water passing through pores
  • Some produce toxins for protection

Coelenterates (Sea Anemones, Fan Coral)

  • Aquatic invertebrates, primarily marine
  • Have a central opening for feeding, surrounded by tentacles
  • Use tentacles to capture prey
  • Simple nervous systems
  • Reproduce sexually or asexually
  • Many produce toxins for defense
  • Includes jellyfish, sea anemones, and corals

Worms

  • Invertebrate animals with long, soft bodies
  • Some have segmented bodies
  • Lack limbs, moving by sliding or contracting
  • Live in various environments (underground, water, humid places)
  • Breathe through their skin
  • Important in agriculture, consuming and decomposing organic matter for soil enrichment
  • Reproduce sexually or asexually

Mollusks (Slugs, Squid)

  • Can live on land and in the sea
  • Soft bodies, some with hard external shells for protection
  • Some have one shell (e.g., conch, snail), others have two-layered shells (e.g., clams)
  • Some have no shell (e.g., slugs)

Arthropods

  • 75% of animals belong to this group
  • Characterized by an exoskeleton for protection
  • Bodies are divided into segments
  • Include Insects, Arachnids, Crustaceans, and Myriapods

Insects

  • Typically have six legs
  • Two antennae
  • Eyes on each side of the head
  • Some produce toxins (e.g., bees)

Arachnids

  • Eight legs
  • Lack antennae
  • Bodies divided into cephalothorax and abdomen
  • Many are venomous

Crustaceans

  • Mostly aquatic
  • Bodies include cephalothorax and abdomen
  • Strong shell
  • Often have two antennae
  • Many have pincer-like front legs

Myriapods

  • Many legs
  • Two antennae

Echinoderms (Starfish, Sea Urchins)

  • Star- or round-shaped
  • No distinct head
  • Have small feet for movement
  • Internal skeleton made of calcareous plates
  • Reproduce sexually
  • Live in various marine environments
  • Some have 5 arms like starfish

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Invertebrates PDF
Use Quizgecko on...
Browser
Browser