Skachat Besplatno Prezentatsii Po Biologii 7 Klass Briukhonogie Molliuski -

Marine predators, some with highly toxic venom. 📂 Slide 6: Ecological and Economic Importance

Snails carry parasitic worms (e.g., Liver Fluke). 💡 Tips for your presentation: Marine predators, some with highly toxic venom

Includes a radula (a "grater" with chitinous teeth) to scrape food. Respiration: Aquatic species: Gills . Terrestrial species: A lung (a modified mantle cavity). Marine predators, some with highly toxic venom

Most terrestrial snails (e.g., Grape Snails). Marine predators, some with highly toxic venom

Features eyes and one or two pairs of tentacles (sensory organs).

Evolutionarily lost their shells to move into tight spaces.