Indicator Species and Biodiversity Concepts

The video tutorial explains how indicator species help gauge environmental conditions, using the biotic index to measure pollution levels. It discusses conservation methods, including in situ and ex situ strategies, and how they aid species survival. Biodiversity is measured through species richness and evenness, with factors like habitat size and corridors affecting it.

What is an indicator species?

• A species that thrives in polluted environments

• A species that lives in specific conditions and indicates ecosystem health

• A species that indicates the presence of predators

• A species that can live in any environment

Which organism is an indicator of clean water?

• Water louse

• Mayfly larva

• Frog

• Algae

How is the biotic index calculated?

• By assessing the color of the water

• By multiplying species count by tolerance rating and dividing by total organisms

• By measuring water temperature

• By counting the number of species

What does a high biotic index indicate?

• Poor water quality

• High pollution levels

• Excellent water quality

• Presence of predators

What is in situ conservation?

• Conservation in botanical gardens

• Conservation in laboratories

• Conservation in natural habitats

• Conservation in zoos

Which conservation method involves breeding programs?

• Community conservation

• Natural conservation

• Ex situ conservation

• In situ conservation

What does species richness refer to?

• The abundance of a single species

• The number of different species in an area

• The size of a species population

• The genetic diversity within a species

How does species evenness affect biodiversity?

• It only affects plant species

• It has no effect on biodiversity

• It increases biodiversity by ensuring similar abundance of species

• It decreases biodiversity

Why is a larger habitat better for biodiversity?

• It has more predators

• It supports more species

• It is easier to manage

• It has more sunlight

What role do corridors play in biodiversity?

• They prevent species migration

• They decrease species richness

• They connect fragmented habitats

• They increase edge effects