Biodiversity and Conservation BIOLOGY - Biodiversity and Conservation

Explain In-situ conservation by giving an example.

“Biodiversity improves the health of crop plants.” Explain the statement with reasons.

Biodiversity in living beings started about 3 billion years ago. Since then, new species are emerging on the earth and at the same time, their mass extinction is also taking place.
(a) How many phenomena of mass extinction have occurred on Earth and which extinction is in progress at present?
(b) How is the current phenomenon of extinction different from earlier occurrences and explain why.

“The stability of a community depends on its prosperity.” How did David Tilman demonstrate it experimentally?

Explain the concept of co-extinction with the help of two examples.

Clarify any two reasons of loss of biodiversity.

Biodiversity plays a key role in many ecosystem services provided by nature.
(a) Present any two widely useful arguments to prove the validity of the statement.
(b) Write any one moral reason for protecting biodiversity.

(a) Write the conclusions drawn by Alexander von Humbolt based on his extensive exploration of South America.
(b) Study the graph given below :

According to Alexander von Humbolt, what do the symbols S, A, C, and Z used in graphs indicate in the context of a species and region relationship?

Write a short note on extinct species?

Give a brief description of the different types of biodiversity in concise words.

Introduction of the African catfish _________ for aquaculture purposes in our rivers.

When one species gets extinct, the others animals and plant species dependent on that species also begin to extinct in obligatory way. It is called _________.###The phenomenon of extinction of a species, the others animals and plant species dependent on that species also begin to extinct in obligatory manner is called_________.

There is a relationship called _________ between species richness and class across a wide variety of areas.

In year 1992 there had been organised _________ on biodiversity at in Brazil.

The conservation of living organism in their Natural Habitat is known as_________.

What is ex situ conservation?

Abington tortoises became extinct within a decade after goats were introduced to the Galapagos Islands. Explain the statement with reasons.

(a) Write an example of a virus biocontrol agent.
(b) Why are they considered desirable for the treatment of an ecologically sensitive area?

Where is minimum and maximum biodiversity found in the world?

Define biodiversity.

When was the world summit on sustainable development held in Johannesburg, South Africa?

Example of a hotspot is:

An example of biodiversity conservation in situ.

On a logarithmic scale the relationship shows straight line which is represented by the following equation.

Biodiversity is classified into many parts based on the ecological relationships of living organisms:

Define species-area relationship pattern of biodiversity in detail.

“Forests provide us unlimited benefits.”Explain how this happens with the help of three different areas.

Write a detail notes on the conservation of biodiversity.

Describe the species according to their susceptibility to extinction and the IUCN Red List.

Describe in detail the various levels of biodiversity.