Write atleast 5 points on plastids
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We provide an overview on the structure and composition of the plastid genome of land plants as well as the functions of its genes in an explicit phylogenetic and evolutionary context. We will discuss the architecture of land plant plastid chromosomes, including gene content and synteny across land plants. Moreover, we will explore the functions and roles of plastid encoded genes in metabolism and their evolutionary importance regarding gene retention and conservation. We suggest that the slow mode at which the plastome typically evolves is likely to be influenced by a combination of different molecular mechanisms. These include the organization of plastid genes in operons, the usually uniparental mode of plastid inheritance, the activity of highly effective repair mechanisms as well as the rarity of plastid fusion. Nevertheless, structurally rearranged plastomes can be found in several unrelated lineages (e.g. ferns, Pinaceae, multiple angiosperm families). Rearrangements and gene losses seem to correlate with an unusual mode of plastid transmission, abundance of repeats, or a heterotrophic lifestyle (parasites or myco-heterotrophs).
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PLASTIDS:
1. Plastids are large cytoplasmic organelles.
2. Plastids are major organelles found in the cells of plants and algae.
3. Plastids are the site of manufacture and storage of important chemical compounds used by the cell.
4. Plastids often contain pigments used in photosynthesis, and the types of pigments present can change or determine the cell's colour.
5. The term plastid was derived from the Greek word plastikas meaning formed or moulded.
6. This term was coined by Schimper in 1885.
7. In plants can be classified as;
# Chloroplasts green plastids: for photosynthesis;
# Chromoplasts coloured plastids: for pigment synthesis and storage
# Gerontoplasts: control the dismantling of the photosynthetic apparatus during senescence
# Leucoplasts colourless plastids: for monoterpene synthesis.
Hope this will help you please mark it as brainlist...
1. Plastids are large cytoplasmic organelles.
2. Plastids are major organelles found in the cells of plants and algae.
3. Plastids are the site of manufacture and storage of important chemical compounds used by the cell.
4. Plastids often contain pigments used in photosynthesis, and the types of pigments present can change or determine the cell's colour.
5. The term plastid was derived from the Greek word plastikas meaning formed or moulded.
6. This term was coined by Schimper in 1885.
7. In plants can be classified as;
# Chloroplasts green plastids: for photosynthesis;
# Chromoplasts coloured plastids: for pigment synthesis and storage
# Gerontoplasts: control the dismantling of the photosynthetic apparatus during senescence
# Leucoplasts colourless plastids: for monoterpene synthesis.
Hope this will help you please mark it as brainlist...
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