Tag: introduction to tissues

• Man and the Biosphere Programme (MAB) is an intergovernmental scientific programme.
  
• It was initiated in 1971 by UNESCO. 
  
• It aims at establishing a scientific basis for the improvement of relationships between people and their surrounding environments.
  
• So, the correct option is 'Man and Biosphere programme'.

The living world consists of many ecosystems. There are 2 main factors present in an ecosystem, namely abiotic (nonliving) and biotic (living). All of these factors interact with each other. The living world is divided into a different sphere, namely:

• A biome is a community of plants and animals that have common characteristics for the environment they exist in. 
• They can be found over a range of continents. 
• Biomes are distinct biological communities that have formed in response to a shared physical climate. 
• For example, an aquatic biome can contain ecosystems such as coral reefs and kelp forests and The great barrier reed along the cast coast of Australia.
• Hence, The great barrier reed along the cast coast of Australia can be categorized as Biome. 
• So, the correct answer is 'Biome'.

There are 4 levels of hierarchy in an ecosystem, the organism level, population level, community level or ecosystem level and the biosphere level. Among them the biosphere level is the highest level and represents the totality of all things on Earth, including their interactions. The biosphere includes all ecosystems on Earth and how they interact together. So, the correct option is 'biome'.

An ecological niche describes the functional role of an organism in its ecosystem, including the resources it uses, the conditions it tolerates, and its interactions with other species.

A dis-climax community is a stable community that is maintained by constant disturbance, preventing it from reaching the true climatic climax.

The total mass of the Earth's atmosphere is approximately 5.15 x 10^18 kg.

The correct taxonomic hierarchy in ascending order is Species, Genus, Family, Order, Class, Phylum, Kingdom.

'The Great Barrier Reef' is considered as a biome. Since biomes are climatically and geographically defined as contiguous areas with similar climatic conditions on the Earth, such as communities of plants, animals, and soil organisms, and are often referred to as ecosystems. 'The Great Barrier Reef' is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres over an area of approximately 344,400 square kilometres.

In ecology, a community or biocoenosis is an assemblage or associations of populations of two or more different species occupying the same geographical area and in a particular time. The term community has a variety of uses. In its simplest form it refers to groups of organisms in a specific place or time.