Troll...
The horseshoe crab is an example of an animal that has both vertebrate and invertebrate features. It has a hard exoskeleton like an invertebrate, but also possesses a primitive form of a segmented backbone similar to vertebrates.
A wasp is a predatory animal and not a parasite.
spiky skin, hard scales shark
A mollusk (mollusc) is an invertebrate. Some mollusks (e.g. snails, shellfish) have hard exoskeletons.
Yes, they do. They have hard scales for protection.
backbone
The Answer would be invertebrate : ) ... !
Amphibians do not have hard scales. Their skin is smooth. It is covered in a thin layer of mucus to keep it moist.
No they do not. They have a hard shell (exoskeleton) instead.
No, starfish do not have a backbone. They belong to a group of animals known as echinoderms, which have a hard, calcareous exoskeleton made up of plates called ossicles. This exoskeleton provides structure and support, but it is not a true backbone like vertebrates have.
scales
Reptiles, such as snakes, lizards, and turtles, are typically covered in scales. Scales are hard, protective structures made of keratin that help these animals retain moisture and provide a barrier against predators.