Mollusca And Arthropoda Trivia Facts: Quiz!

Explanation
Gastropoda is the correct answer because it is a class of mollusks that includes snails and slugs. Mollusca is a phylum that consists of various organisms such as clams, octopuses, and squid. Oglichaeta and Ploychaeta are not found in the Mollusca category.

Explanation
The statement suggests that a significant majority of species on Earth are arthropods. Arthropods are a diverse group of invertebrate animals that include insects, spiders, crustaceans, and more. This answer implies that arthropods make up a large portion of the Earth's biodiversity, which is supported by scientific research and observations.

Explanation
The correct answer is "Blood packed Hemocoel." In Mollusks, the hemocoel is the most important body cavity as it is filled with blood and serves as a circulatory system. It allows for the transport of nutrients, gases, and waste throughout the body. Tentacles are not a body cavity but rather external appendages used for feeding or sensory purposes. The digestive tract is important for digestion and absorption of nutrients, but it is not considered a body cavity.

Explanation
The correct answer is Scallop. Bivalvia is a class in the phylum Mollusca that includes organisms with two shells, connected by a hinge. Scorpions and snails do not have this characteristic, but scallops do, making them likely to belong in the Bivalvia group.

Explanation
The outer shell of a mollusk is composed of chitin. Chitin is a tough, flexible, and lightweight material that is also found in the exoskeletons of insects and the cell walls of fungi. It provides protection and support to the mollusk's body, helping to maintain its shape and prevent damage from predators or the environment.

Explanation
Some species of arthropods, such as certain types of insects and crustaceans, have the ability to reproduce asexually. This means that they can produce offspring without the need for fertilization or mating. Asexual reproduction in arthropods can occur through various mechanisms, such as budding, fragmentation, or parthenogenesis. This allows these species to rapidly increase their population size and colonize new habitats. Therefore, the statement that some species of arthropods can produce asexually is true.

Explanation
The exoskeleton of arthropods serves multiple functions. It acts as a protective outer covering, shielding the creature from physical harm and potential predators. Additionally, the exoskeleton helps to prevent water loss by acting as a barrier, reducing the evaporation of moisture from the body. Therefore, the correct answer is that an arthropod's exoskeleton can both protect the creature and prevent water loss.

Explanation
Think about what would happen if Arthropods and Mollusks did not exist. What would the world be without them? Think about the environmental changes and the changes that we would experience.