animal crossword

3. Glands: Specialized glands in female mammals that produce milk.
6. Sessile (attached) life stage of cnidarians with tentacles facing upward (e.g., sea anemone).
8. A hydraulic system used by echinoderms (sea stars) for locomotion, food, and waste transportation.
10. Animal with a backbone or spinal column.
12. Animals lacking a vertebral column or backbone.
13. Symmetry: Body parts arranged around a central axis (e.g., jellyfish, starfish).
14. "Warm-blooded" animals that maintain a constant body temperature through metabolism.
18. Asexual reproduction where a new individual grows from the parent's body, common in hydras and corals.

1. Lack of symmetry; body cannot be divided into equal parts (e.g., sponges).
2. Flexible connective tissue forming the skeleton of sharks and rays.
4. A rigid external covering for the body in some invertebrates, providing protection and support (e.g., arthropods).
5. "Cold-blooded" animals that rely on external heat sources.
7. Motile (free-swimming) life stage of cnidarians with tentacles facing downward (e.g., jellyfish
9. Bladder Internal gas-filled organ that helps bony fish control buoyancy.
11. Symmetry: Body plan with left and right halves that are mirror images (e.g., humans, insects).
14. An internal skeleton, such as the calcareous plates found in echinoderms.
15. An organism possessing both male and female reproductive organs (e.g., earthworms)
16. The process of shedding an old exoskeleton to allow growth.
17. Eggs Eggs produced by reptiles, birds, and egg-laying mammals, containing a specialized membrane for terrestrial development.
18. Creatures living on or in the bottom of a body of water.