GALLERY
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| EARTHWORM |
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| RAG WORM |
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| RAG WORM EATING SMALL FISH |
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| LEECH |
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| A GROUP OF LEECH EATING FROG |
INTERESTING FACTS:
- Never dies when been cut into two halves. Part with fatter pink will survive
- Exist since 600 million years ago
- Has 34000 species
- Hermaphrodite. Have both male and female reproductive cells. Produce both sperms and egg
- · Can’t bear light because it will paralyses them
- · Don’t have lungs. Use their skin to breathe.
- · Skin of earthworm dries in extreme hot and cold conditions and it dies. Reasons why earthworm cannot survive in extreme cold and desert area
- · Secrete slime, which is nitrogen rich. Helps in enhancing the fertility of soil
- · Don’t have teeth. Do have strong mouth muscle that help to swallow soil.
- Has a brain, five hearts, breathes through skin
- Can burrow as deep as fifteen feet\
- Help aerate the soil
- Worm tunnels allow more water to enter the soil
- Worm tunnels allow air enter the soil.
- Worm tunnels make it easier for roots and plants to grow.
- It has been shown to have far fewer parasitic nematodes than soil without earthworms. Many other soil borne diseases also appear to be reduced
- : muscular, slim and moist body
- Ventral and dorsal blood vessel two main blood vessels in the body
VIDEO
LINKS:
https://youtu.be/2fG-KkR3FZ8 ( earthworm mating )
https://youtu.be/4X5IUNa4_yk (earthworm eating )
CLASSIFICATION
- class oligochaeta (earthworm )
- class polychaeta (rag worm )
- also know as the bristle worm
- the outer surface of the body wall consist of a simple columnar epithelium covered by a thin cuticle
- the body is often brightly coloured
3. class hirudinea( leech )
- their bodies are much more solid as the space in their coelom are dense with connective tissue
- they also have two sucker one at each end
- leecha are hermaphorodites , meaning each has both female and male reproductive organ
- leech use their anterior suckers to connect to hosts for feeding
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