Question

Plastidome can be traced in
A. Bacterial cells
B. Human cells
C. Cyanobacterial cells
D. Higher plant cells

Answer 1

Hint: The term plastidome includes the entire plastid complex of a cell. Plastids are double membranous semi-autonomous cell organelles, participate in storage and synthesis of organic compounds which occur in plants and a few protists.

Complete step by step answer:
Some points regarding plastidome are listed below:
-Plastid is an organelle present in the cells of chlorophyll eukaryotes.
It is semi-autonomous with clean DNA.
-Plastids can be classified mainly into leucoplasts, chromoplasts and chloroplasts based on the pigments found in them and their functions.
-One of the main characteristics of these organelles is that they have a double membrane.
-Plastids are primarily involved within the manufacture and storage of food.
-They are therefore involved in such processes as photosynthesis, synthesis of amino acids and lipids also as storage of varied materials among a couple of other functions.
-These are mainly used for manufacturing and storing of food.
-Since bacteria and cyanobacteria are prokaryotic and the human cell -don’t have the ability for photosynthesis, it can be said that plastidome can be traced in the cells of higher plants.
Hence, the correct answer is option (D) Higher plant cells.

Note:
Types of Plastids-
-Chloroplast
Chloroplasts are oval shaped plastids that are located in the mesophyll cells on plant leaves. The space between the double membranes is containing various enzymes and proteins that are essential for cellular processes.
-Chromoplasts
Chromoplasts are brightly coloured plastids that act as the site of pigment accumulation which are typically found in the fleshy fruits, flowers as well as various other pigmented parts of the plant such as leaves.
-Leucoplasts
These are colorless plastids that are commonly found in colorless leaves and rapidly growing tissues such as tubers, stems, roots etc.Leucoplasts function the location of starch formation and storage.