Worms: Nature's Hidden Engineers

The video explores the diversity and adaptation of worms, highlighting their unique anatomy and survival mechanisms. It delves into the ecological roles of marine worms, their impact as ecosystem engineers, and the fascinating characteristics of unique species like spaghetti worms and tube worms. The video also covers the feeding habits of leeches and the significant role of earthworms in soil health and nutrient cycling.

How many species of worms have scientists identified?

• 25,000

• 10,000

• 15,000

• 20,000

What is the primary function of the feather dust worm's head?

• To reproduce

• To detect predators

• To filter food from the water

• To burrow into the sediment

What unique feature helps the feather dust worm detect danger?

• Sensitive tentacles

• Tiny eyes on its appendages

• Chemical sensors

• Vibrating body segments

What is the primary habitat of the burrowing marine worm, abanca?

• Rocky shores

• Mud flats

• Deep sea

• Coral reefs

How does abanca propel itself deeper into the sediment?

• By using its tentacles

• By contracting its muscular system

• By secreting a slippery mucus

• By using its gills

What role do diopatra tubes play in their habitat?

• They attract mates

• They stabilize the sediment

• They filter water

• They provide shelter for fish

How do diopatra worms construct their tubes?

• By digging with their heads

• By secreting a glue-like compound

• By using their tentacles

• By collecting seaweed

What adaptation allows leeches to feed without being noticed?

• Camouflage

• Anesthetic in their bite

• Silent movement

• Sharp teeth

How long can earthworms live?

• Up to 7 years

• Up to 5 years

• Up to 3 years

• Up to 10 years

What ecological role do earthworms play in the soil?

• They fertilize the soil

• They decompose organic matter

• All of the above

• They aerate the soil