Question

Explain why chloroplasts are found only in plant cells?

Answer 1

Hint:Chloroplasts are the food producers of the cell.A chloroplast found is an organelle within the cells of plants and certain algae.

Complete Answer:
The chloroplast found only in algae and plant cells. The chloroplast is a cell organelle that produces energy through photosynthesis. The chloroplast comes from Greek word chloros meaning queen and plates meaning formed. The chloroplast absorbs sunlight and uses it in conjunction with water and carbon dioxide gas to produce food for the plant.
It absorbs light energy from the sun to produce the free energy started in ATP and NADPH through a photosynthesis. Chloroplasts are considered to have originated as endosymbiotic cyanobacteria. The chloroplast is similar to mitochondria but found only in plants and protists.
The chloroplast is surrounded by a double celled composite membrane with an intermembrane space. The chloroplasts have their own DNA and are involved in energy metabolism and have reticulations or many infoldings, filling their inner spaces. There are no chloroplasts in animal or bacterial cells. Chloroplasts found in higher plants are generally biconvex or Plano convex shaped. It can be found in the cells of the mesophyll in plant leaves. In different plants chloroplast have different shapes, they vary from spheroid, filamentous saucer-shaped, discoid or avoid shaped. The chloroplast is vesicular and has a colorless center. In algae a single huge chloroplast is seen that appears as a network.

Note:The size of the chloroplast also varies from species to species and it is constant for a given cell type. The higher plants, the average size of chloroplast is $4 - 6$ all in diameter and $1 - 3$ all in thickness.