Food Chain and Trophic Levels

This video tutorial explains the differences between food chains and food webs. It covers the roles of producers, primary, secondary, and tertiary consumers in a food chain, and how energy flows through these levels. The video also explores food webs, showing how multiple food chains interact within an ecosystem, and discusses trophic levels. Examples of food chains and webs are provided to illustrate these concepts.

What is the primary focus of the video tutorial?

• The lifecycle of plants

• The process of photosynthesis

• The habitat of marine animals

• The difference between a food chain and a food web

In a food chain, what is the role of the producer?

• To hunt secondary consumers

• To decompose organic matter

• To make food

• To consume primary consumers

Which organism is an example of a primary consumer in the given food chain?

• Lizard

• Snake

• Corn

• Grasshopper

What does the arrow in a food chain represent?

• The color of the organism

• The direction of energy flow

• The size of the organism

• The speed of the organism

How does a food web differ from a food chain?

• It excludes tertiary consumers

• It only includes producers

• It shows a single path of energy flow

• It shows multiple interconnected food chains

What is the position of producers in a trophic pyramid?

• At the top

• At the bottom

• In the middle

• Above secondary consumers

In the food web example, which organism is a quaternary consumer?

• Bird

• Hawk

• Grasshopper

• Snake

Which of the following is a secondary consumer in the grass-mouse-owl food chain?

• Mouse

• Grass

• Owl

• Hawk

Which organism can have more than one consumer in a food web?

• Rabbit

• Corn

• Hawk

• Snake

What is the role of a tertiary consumer in a food chain?

• To photosynthesize

• To produce food

• To eat secondary consumers

• To decompose organic matter