Niche and Habitat Concepts in Ecology

The video explains the concept of ecological niches, differentiating between niche and habitat. It discusses how organisms with the same habitat but different niches can coexist without competition, while those with the same niche may face competition. The video introduces fundamental and realized niches, using snails as an example to illustrate how organisms adapt to minimize competition. The fundamental niche is where an organism can theoretically live, while the realized niche is where it actually lives due to competition. The video concludes with a summary of these concepts.

What is the primary difference between a niche and a habitat?

• A niche is a broader concept than a habitat.

• A habitat includes only biotic factors.

• A niche is a functional area for an organism, while a habitat is where it lives.

• A habitat is a functional area for an organism, while a niche is where it lives.

How can two organisms with the same habitat but different niches coexist?

• By sharing the same food source.

• By competing for resources.

• By having different food sources and behaviors.

• By living in different geographical areas.

What happens when two organisms have the same niche?

• They will always coexist peacefully.

• They will change their food habits.

• They may face competition for resources.

• They will migrate to different areas.

What is a fundamental niche?

• The area where an organism actually lives.

• The theoretical area where an organism can live.

• The area where an organism competes for resources.

• The area where an organism cannot survive.

What is a realized niche?

• The area where an organism competes for resources.

• The theoretical area where an organism can live.

• The area where an organism cannot survive.

• The area where an organism actually lives after competition.

In the snail example, what is the fundamental niche of the red snail?

• Only the high tide area.

• Only the low tide area.

• The entire area from low tide to high tide.

• The area where the blue snail lives.

In the snail example, what is the realized niche of the blue snail?

• Only the low tide area.

• Only the high tide area.

• The area where the red snail lives.

• The entire area from low tide to high tide.

Why might an organism's realized niche be smaller than its fundamental niche?

• Due to changes in climate.

• Due to competition with other organisms.

• Due to increased predation.

• Due to lack of food resources.

What is the main reason organisms might compromise their niche?

• To increase their population.

• To migrate to new areas.

• To change their food habits.

• To minimize competition and coexist.

How do fundamental and realized niches differ in some organisms?

• The realized niche is always larger.

• The fundamental niche is always smaller.

• They are always the same.

• The fundamental niche is often larger than the realized niche.