Skachat Besplatno Prezentatsii Po Biologii 7 Klass Briukhonogie Molliuski Direct

A broad, flat sole used for crawling via muscular waves.

Many marine species (separate males and females). Fertilization: Usually internal. Development: Direct (small snails hatch from eggs). Indirect (larval stage in some marine species). 📂 Slide 5: Diversity of Gastropods Grape Snail: A common land herbivore. A broad, flat sole used for crawling via muscular waves

Use high-quality photos of a Grape Snail (Vinogradnaya ulitka) and a Slug (Slizen). Development: Direct (small snails hatch from eggs)

Most terrestrial snails (e.g., Grape Snails). Use high-quality photos of a Grape Snail (Vinogradnaya

Includes a radula (a "grater" with chitinous teeth) to scrape food. Respiration: Aquatic species: Gills . Terrestrial species: A lung (a modified mantle cavity).

Part of the food chain; decomposers of organic matter. For Humans: Food source: Escargot (snails). Pests: Slugs damage agricultural crops. Medicine: Source of mucus for cosmetics and research.

Snails carry parasitic worms (e.g., Liver Fluke). 💡 Tips for your presentation: