write a short note on plastids , mitochondria, nucleus , ribosomes , endoplasmic reticulum, golgi apparatus, vacuoles , lysosomes . Pls hurry up
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Plastids : these are one of the strange organelles of the plant cell. These are used for imparting different colors to the plant cell.
These are of 3 types
Chloroplast: contains green pigment called chlorophyll
Chromoplast: other pigments except green
Leucoplast: contains various fats carbohydrates and food for the cell
Mitochondria : these are present in both plant and animal cell. These are organelles which have there own ribosomes thus called strange organelles. These are double membrane structures. Outer member is smooth whereas the inner membrane is highly folded where the generation of atp takes places. These folds are called cristae.
Golgi apparatus : it is the store house of the cell which stores the food and other generations of the cell. These help in packaging, transportation and modification of the cell food.
Vacuoles: these are present in the plant cell only. It is the empty space present in a plant cell which stores the excess food materials of the plant cell.
Lysosomes: the suicidal bags of the cell made by the golgi apparatus contains highly concentrated digestive juices which help in destroying the cell.
Whenever a cell gets to a situation where it is impossible to repair it the lysosomes bursts and eats up the entire destructed cell.
Hope this will be helping you
:) :)
These are of 3 types
Chloroplast: contains green pigment called chlorophyll
Chromoplast: other pigments except green
Leucoplast: contains various fats carbohydrates and food for the cell
Mitochondria : these are present in both plant and animal cell. These are organelles which have there own ribosomes thus called strange organelles. These are double membrane structures. Outer member is smooth whereas the inner membrane is highly folded where the generation of atp takes places. These folds are called cristae.
Golgi apparatus : it is the store house of the cell which stores the food and other generations of the cell. These help in packaging, transportation and modification of the cell food.
Vacuoles: these are present in the plant cell only. It is the empty space present in a plant cell which stores the excess food materials of the plant cell.
Lysosomes: the suicidal bags of the cell made by the golgi apparatus contains highly concentrated digestive juices which help in destroying the cell.
Whenever a cell gets to a situation where it is impossible to repair it the lysosomes bursts and eats up the entire destructed cell.
Hope this will be helping you
:) :)
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gunu93:
you really helped me a lot . thank you sooo...much
wlcm
but i'll not come .( funny )
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Answered by
36
Plastids: these are double membrane bound organelles which are present only in plant cells. These are basically of three types
1. Chloroplast: these are present in green leaves and other green parts of plant, like young stems.
2. Chromoplast: these are coloured plastids found in flowers, some fruits and also in older leaves. They provide red, orange, brown and yellow colours to flowers.
3. Leucoplast: these are colourless plastids devoid of any pigment. There main function is storage of food materials and are mostly found in roots and underground stems like potato.
Mitochondria: these are present in all cells. These are double membrane organelles with an outer and inner membrane. They store energy in form of Adenosine Triphosphate(ATP). And that is why they are also called 'powerhouses of cell'.
Nucleus: it is the most conspicuous part of a cell. It is usually spherical in shape, and appears to be deeply coloured. It has a membranous bound structure covering called nuclear membrane. The matter present inside nuclear membrane is called nucleoplasm, which has two components: a dark round body called nucleolus and a network of very thin strands of thread- like structure called chromatin threads or chromosomes.
Ribosomes: this are very small membrane less organelles which manufacturer proteins for the cell. They may be attached to endoplasmic reticulum or may exist independently, but they are generally present in clusters.
Endoplasmic reticulum: this is a fine network of folded membranes which is present throughout the cytoplasm. It extends from the plasma membrane to the nuclear membrane. It is of two types: smooth and rough. Endoplasmic reticulum with ribosomes attached on there surface are called rough endoplasmic reticulum and those without ribosomes are called smooth endoplasmic reticulum.
Golgi apparatus: these are structure made up of membranous sacs of various shapes and sizes. They are also called dictyosomes . They help in secretion of different materials required by the cell.
Vacuoles: these are fluid filled cavities in the cytoplasm. They are of various sizes. In plant cells, there is usually a very large simple vacuole occupying most of the cell. It is surrounded by a membranous called tonoplast and contains a fluid called cell sap. In animal cells vacuoles may be totally absent or. If present then are much smaller. Vacuoles provide turgidity to the cell.
Lysosomes: this are very tiny organelles covered by am membrane. They are nicknamed as 'suicide bags' because they contain certain liquids called enzymes which destroy germs, worn out parts of the cell and sometimes entire cell if they become old and useless.
I have answered your question. Hope it helps you
1. Chloroplast: these are present in green leaves and other green parts of plant, like young stems.
2. Chromoplast: these are coloured plastids found in flowers, some fruits and also in older leaves. They provide red, orange, brown and yellow colours to flowers.
3. Leucoplast: these are colourless plastids devoid of any pigment. There main function is storage of food materials and are mostly found in roots and underground stems like potato.
Mitochondria: these are present in all cells. These are double membrane organelles with an outer and inner membrane. They store energy in form of Adenosine Triphosphate(ATP). And that is why they are also called 'powerhouses of cell'.
Nucleus: it is the most conspicuous part of a cell. It is usually spherical in shape, and appears to be deeply coloured. It has a membranous bound structure covering called nuclear membrane. The matter present inside nuclear membrane is called nucleoplasm, which has two components: a dark round body called nucleolus and a network of very thin strands of thread- like structure called chromatin threads or chromosomes.
Ribosomes: this are very small membrane less organelles which manufacturer proteins for the cell. They may be attached to endoplasmic reticulum or may exist independently, but they are generally present in clusters.
Endoplasmic reticulum: this is a fine network of folded membranes which is present throughout the cytoplasm. It extends from the plasma membrane to the nuclear membrane. It is of two types: smooth and rough. Endoplasmic reticulum with ribosomes attached on there surface are called rough endoplasmic reticulum and those without ribosomes are called smooth endoplasmic reticulum.
Golgi apparatus: these are structure made up of membranous sacs of various shapes and sizes. They are also called dictyosomes . They help in secretion of different materials required by the cell.
Vacuoles: these are fluid filled cavities in the cytoplasm. They are of various sizes. In plant cells, there is usually a very large simple vacuole occupying most of the cell. It is surrounded by a membranous called tonoplast and contains a fluid called cell sap. In animal cells vacuoles may be totally absent or. If present then are much smaller. Vacuoles provide turgidity to the cell.
Lysosomes: this are very tiny organelles covered by am membrane. They are nicknamed as 'suicide bags' because they contain certain liquids called enzymes which destroy germs, worn out parts of the cell and sometimes entire cell if they become old and useless.
I have answered your question. Hope it helps you
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