Question

Microbody present only in plants is
A. Sphaerosome
B. Peroxisome
C. Glyoxysome
D. Both B and C

Answer 1

Hint: The prokaryotic and eukaryotic cells have different morphology and anatomy. There are various organelles in both animal and plant cell which are used for storage purposes. They can store lipid, protein, fatty acids etc. They can also serve as the structural component of the cell.

Complete answer:
Microbodies are also called cytosomes. These are the cellular organelles in plant cells. They are also found in protozoans and animal cells.
There are many kinds of microbodies – peroxisome, glycosome, glyoxysomes and hydrogenosomes.
Their major work is to oxidize fatty acids, amino acids, and alcohol which need a higher amount of oxygen.
They all are spherical and single membrane. They have a diameter 0.1-1 micrometre. They can generate scavenging activities.
Option A: Sphaerosome: They are single membrane cell organelle for the storage of lipids in the plants only. They were discovered by Perner in 1953. They are spherical bodies. They also have proteins.
Option B: Peroxisome: They are found in the cytoplasm of all eukaryotic cells. They are the oxidative organelles. They generate hydrogen peroxide as their by-products.
Option C: Glyoxysome: They are found in the plant cells and some of the fungi. They are used for the fat storage in filamentous fungi and germinating seeds. They have enzymes for pyrimidine synthesis, purine salvage and ether lipid biosynthesis

So the answer is option A: Sphaerosome.

Note: Spherosomes are also called Oleosomes. They are formed from the endoplasmic reticulum. They have phospholipid monolayer surrounding them towards the cytoplasmic fluid. The membrane is stabilized by proteins called oleosins.