Invertebrates online worksheet - Free Printable

To solve the problem, we need to identify which group of invertebrate animals each organism belongs to. Let's analyze each image and match it with the correct group:

1. Left Column:

- Top Image (Segmented worm-like creature):
This is a worm. Worms are typically elongated, soft-bodied animals that belong to the phylum Annelida or other related groups.
- Group: WORMS

- Second Image (Octopus):
Octopuses are mollusks. They have a soft body, no external skeleton, and usually have tentacles.
- Group: MOLLUSCS

- Third Image (Spider):
Spiders are arthropods. They have an exoskeleton, jointed appendages, and typically eight legs.
- Group: ARTHROPODS

- Fourth Image (Jellyfish):
Jellyfish are classified as jellyfishes. They are gelatinous, free-swimming marine animals with a radial symmetry.
- Group: JELLYFISH

- Fifth Image (Ant):
Ants are insects, which are a type of arthropod. They have six legs, three body segments, and an exoskeleton.
- Group: ARTHROPODS

- Sixth Image (Sea Urchin):
Sea urchins are echinoderms. They have a spiny outer covering and are radially symmetrical.
- Group: ECHINODERMS

2. Right Column:

- Top Image (Corals):
Corals are not animals but are colonies of tiny animals called polyps. However, they are often grouped with sponges in educational contexts for simplicity.
- Group: SPONGES

- Second Image (Snail):
Snails are mollusks. They have a soft body and a hard shell.
- Group: MOLLUSCS

- Third Image (Butterfly):
Butterflies are insects, which are a type of arthropod. They have six legs, two pairs of wings, and an exoskeleton.
- Group: ARTHROPODS

- Fourth Image (Starfish):
Starfish are echinoderms. They have a star-shaped body and are radially symmetrical.
- Group: ECHINODERMS

- Fifth Image (Centipede):
Centipedes are arthropods. They have many legs and a segmented body.
- Group: ARTHROPODS

- Sixth Image (Anemone):
Sea anemones are cnidarians, but they are often grouped with sponges in educational contexts for simplicity.
- Group: SPONGES

Final Matching:

- Left Column:
1. Worm → WORMS
2. Octopus → MOLLUSCS
3. Spider → ARTHROPODS
4. Jellyfish → JELLYFISH
5. Ant → ARTHROPODS
6. Sea Urchin → ECHINODERMS

- Right Column:
1. Corals → SPONGES
2. Snail → MOLLUSCS
3. Butterfly → ARTHROPODS
4. Starfish → ECHINODERMS
5. Centipede → ARTHROPODS
6. Anemone → SPONGES

Answer:

\boxed{
\begin{array}{ll}
\text{Worm} & \text{WORMS} \\
\text{Octopus} & \text{MOLLUSCS} \\
\text{Spider} & \text{ARTHROPODS} \\
\text{Jellyfish} & \text{JELLYFISH} \\
\text{Ant} & \text{ARTHROPODS} \\
\text{Sea Urchin} & \text{ECHINODERMS} \\
\text{Corals} & \text{SPONGES} \\
\text{Snail} & \text{MOLLUSCS} \\
\text{Butterfly} & \text{ARTHROPODS} \\
\text{Starfish} & \text{ECHINODERMS} \\
\text{Centipede} & \text{ARTHROPODS} \\
\text{Anemone} & \text{SPONGES} \\
\end{array}
}