Question

1) structure & functions of Mitochondria and chloroplast
2) what are plastids? Mention different types of plastids with examples.
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Answer 1

Answer:

Both the chloroplast and the mitochondrion are organelles found in the cells of plants, but only mitochondria are found in animal cells. The function of chloroplasts and mitochondria is to generate energy for the cells in which they live. The structure of both organelle types includes an inner and an outer membrane.

2)answer :

The two important types of Plastids are as follows:

Sometimes pigments are absent. On the basis of presence of pigments, the plastids are of two types: (i) the chromoplasts (chromatophores) having pigment, and (ii) the leucoplasts which are colourless plastids.

Answer 2

✴Answer:-

1). Both chloroplasts and mitochondria are responsible for generating energy for the cells they reside in. The structure of both organelles comprises an inner and outer membrane.

2). Plastids refer to the double membrane bound organelles found in plant cells. They are found in the cytoplasm. Plants make and store food in plastids. They have their own DNA and Ribosomes.

➡Diffrent types of plastids are follow:-

• Chloroplast:-Are the green plastids which contains Chlorophyll pigments for photosynthesis.

• Chromoplasts:-Are the coloured plastids for pigment synthesis and storage.

• Gerontoplasts:-Are the Chloroplast that are going through the ageing process.

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✴More To Know:-

• Plasmolysis is the process in which cells lose water in a hypertonic solution. The reverse process, deplasmolysis or cytolysis, can occur if the cell is in a hypotonic solution resulting in a lower external osmotic pressure and a net flow of water into the cell.

• The passage of a fluid through a semipermeable membrane toward a solution of lower concentration, especially the passage of water through a cell membrane into the surrounding medium.

• Plastids are mainly found in eukaryotic cells, plastids can be grouped into two distinctive types depending on their membrane structure: primary plastids and secondary plastids.

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