Biodiversity and Ecological Concepts

The video discusses biodiversity, its types, and importance in maintaining ecosystem balance. It covers species, genetic, and ecosystem diversity, and explains different ecosystem types like terrestrial, freshwater, and marine. The importance of biodiversity in providing resources and adapting to environmental changes is highlighted. Population dynamics, including density and distribution, are explored. The video also addresses natural and man-made causes of extinction, such as climate change, pollution, and deforestation, emphasizing the need for conservation efforts.

What is biodiversity and why is it crucial for ecological balance?

• It refers to the number of species in a specific area.

• It is the genetic variation within a single species.

• It is the variety of life on Earth and helps maintain ecological balance.

• It is the study of ecosystems and their interactions.

Which of the following is an example of species diversity?

• The genetic variation in a population of wolves

• Various species of monkeys, dragonflies, and needle beauties

• Different breeds of dogs

• The variety of ecosystems like deserts and rainforests

What does genetic diversity refer to?

• The interaction between different species

• The number of species in a region

• The variety of ecosystems in an area

• The variation of genes within a species

How does biodiversity contribute to a healthy ecosystem?

• By reducing the number of species

• By increasing the population density

• By providing resources like clean water and air

• By limiting genetic diversity

What is index diversity?

• The distribution pattern of a population

• A mathematical measure of species diversity in a community

• A measure of genetic variation within a species

• The number of ecosystems in a region

What is population density?

• The distribution pattern of a species

• The genetic variation within a population

• The number of individuals per unit area

• The number of species in a community

Which distribution pattern maximizes space between individuals?

• Clustered distribution

• Uniform distribution

• Random distribution

• Clump distribution

What is a natural cause of extinction?

• Deforestation

• Water pollution

• Extreme climate changes

• Illegal logging

Which human activity contributes to deforestation?

• Invasive species

• Climate change

• Illegal logging

• Natural disasters

What is eutrophication?

• A type of air pollution

• A process that increases nutrient concentration in water bodies

• A method of deforestation

• A form of genetic diversity