Copepods: The Diatom-Devouring King of Plankton

The video explores the ecological role of copepods, small crustaceans that thrive in various aquatic environments. It highlights their diversity, anatomy, and sensory abilities, which aid in survival and reproduction. Copepods play a crucial role in the food web, consuming vast numbers of diatoms and serving as a food source for larger animals. Their adaptations, such as speed and feeding strategies, make them dominant zooplankton in many ecosystems.

What is the primary role of photosynthetic organisms in the ecological food web?

• To provide shelter for marine life

• To decompose organic matter

• To convert sunlight into sugar

• To consume other organisms

How many species of copepods are estimated to exist worldwide?

• Over 30,000

• Over 40,000

• Over 20,000

• Over 10,000

What is a unique feature of copepod antennae?

• They are used for mating

• They are used for swimming

• They are used for light detection

• They are used for camouflage

What challenge do copepods face when trying to find a mate in the ocean?

• Limited vision

• Lack of food

• Strong ocean currents

• Vastness of the ocean

What is the primary diet of copepods?

• Fish

• Plankton

• Algae

• Diatoms

What percentage of the zooplankton population do copepods make up in Lake Baikal?

• 66%

• 76%

• 86%

• 96%

How do copepods contribute to the marine food chain?

• By being a primary food source for fish

• By providing oxygen through photosynthesis

• By decomposing organic matter

• By cleaning the ocean floor