Complex sentence: Chloroplasts are organelles, specialized subunits, in plant and algal cells whose discovery inside plant cells is usually credited to Julius von Sachs (1832-1897), an influential botanist and author of standard botanical textbooks-sometimes called "The Father of Plant Physiology".
Split into simpler sentences: Chloroplasts are organelles, specialized subunits, in plant and algal cells. The discovery of chloroplasts as organelles inside plant cells is usually credited to Julius von Sachs (1832-1897), an influential botanist and author of standard botanical textbooks-sometimes called "The Father of Plant Physiology".