Which type of haploid umicellular eukaryote cells has a diameter of ∼ 10 jum, and about half of their volume is occupied by cup-shaped chloroplasts

Correct option is C

 The correct answer is (c) Chlamydomonas.
Chlamydomonas is a type of unicellular eukaryotic algae characterized by its small size, typically around 10 micrometers in diameter. Approximately half of the cell volume of Chlamydomonas is occupied by a distinctive cup-shaped chloroplast, which is a key feature that aids in photosynthesis. This organism is often used in biological studies due to its simple structure and the ease with which it can be cultured in laboratories. Chlamydomonas has two flagella that it uses for movement and is widely studied for insights into cellular processes such as chloroplast dynamics, photosynthesis, and flagellar movement.