1.The part of the earth and its atmosphere in which living organisms exist or that is capable of supporting life.
2.The living organisms and their environment composing the biosphere
1. A succession of organisms in an ecological community that constitutes a continuation of food energy from one organism to another as each consumes a lower member and in turn is preyed upon by a higher member.
1. A heterotrophic organism that ingests other organisms or organic matter in a food chain.
A photosynthetic green plant or chemosynthetic bacterium, constituting the first trophic level in a food chain; an autotrophic organism.
is a set of techniques used to adapt plants for specific needs or opportunities.
the state or quality of being different or varied
A single-celled or multicellular organism whose cells contain adistinct membrane-bound nucleus.
An organism of the kingdom Prokaryotae, constituting the bacteriaand cyanobacteria, characterized by the absence of a nuclearmembrane and by DNA that is not organized into chromosomes.
is the tissue in all plants consisting of undifferentiated cells (meristematic cells) and found in zones of the plant where growth can take place
are thin-walled cells of the ground tissue that make up the bulk of most nonwoody structures, yet sometimes their cell walls can be lignified.
1. Meaning "glue", which refers to the thick, glistening appearance of the walls in fresh tissues.
2.Collenchyma tissue is composed of elongated cells with unevenly thickened walls.
1. Is a supporting tissue in plants. Two groups of sclerenchyma cells exist: fibres and sclereids. Their walls consist of cellulose, hemicellulose and lignin
1. are fine outgrowths or appendages on plants and certain protists