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Skachat Besplatno Prezentatsii Po Biologii 7 Klass Briukhonogie Molliuski May 2026

Ask the class why a snail leaves a "slime trail" (Answer: To reduce friction and protect the foot). If you'd like, I can help you: Write a quiz for the final slide. Provide a script for what to say while presenting. Find specific Latin names for the species mentioned.

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: Ask the class why a snail leaves a

Evolutionarily lost their shells to move into tight spaces.

Open system with a heart (one ventricle and one or two auricles). Find specific Latin names for the species mentioned

Use high-quality photos of a Grape Snail (Vinogradnaya ulitka) and a Slug (Slizen).

Several pairs of nerve nodes (ganglia) connected by bridges. 📂 Slide 4: Reproduction and Development Pests: Slugs damage agricultural crops

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