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What are plants?
Plants are multicellular organisms, made up of eukaryotic plant cells. They posses autotrophic nutrition and are capable of making tissues.
Plants divide into two groups. These two groups are:
Seedless plants and plants with seeds.
Seedless plants divide into two groups. What are these two groups?
Bryophytes and pteridophytes.
Plants with seeds receive another name. What is this name?
Spermatophytes.
Spermatophytes divide into two groups. What are these groups?
Gymnosperms and angiosperms.
Spermatophytes without fruit are:
Gymnosperms.
Spermatophytes with fruit are:
Angiosperms.
Plants without complex vessels, without seeds, without roots, without leaves and without flowers are:
Bryophytes.
What plants are the main bryophytes?
Mosses.
What plants have large leaves called frons?
Pteridophytes.
What plants are the main pteridophytes?
Ferns.
What are the structural organs of spermatophytes?
Roots, stem and leaves.
What are the reproductive organs of spermatophytes?
Flowers and cones.
What are the principal functions of the roots?
To absorb water and minerals through root hairs, to anchor the plant and to stores reserves of nutrients.
What are the main functions of the leaves?
To perform photosynthesis and to facilitate gas exchange with the atmosphere.
Which organelles are essential to perform photosynthesis?
Chloroplasts.
