In this article we will discuss about the ultrastructure and functions of chloroplasts in the cytoplasm. Ultrastructure of Chloroplast: Chloroplasts of higher plants have disc-shaped or oval structure, 10 µm in length and 2-4 µm in diameter. Algal species contain larger chloroplasts of different shapes, e.g., spiral, cup-shaped, circular bands. The number of chloroplasts per cell is one to two [...]
Read this article to get information on the Chemical Composition of Chloroplasts! By chemical analysis these consist of lipids and proteins basically. Lipids are mainly phospholipid components of the membranes and lamellae. Proteins also contain enzymes which are fully present in mature plastids. Various components are present in plastids in the following percentage by dry weight: Chloroplasts contain proteins, lipids, [...]
Chloroplasts: Notes on the Ultrastructure of Chloroplasts! The chloroplast which is a widely occurring plastid of green plants may be filamentous, saucer-shaped, spheroid, ovoid, discoid or club - shaped. It is vesicular, having a colourless centre. It's size varies from 2 to 3µ in thickness and 5 to 10µ long (Hall et al., 1974). In higher plants there are usually [...]
