Answer:
One examined plant cells, and the other examined animal cells.
Step-by-step explanation:
Background Knowledge:
Both Schleiden and Schwann are german Scientists. Schleiden was botanist ( Studying plants) and Schwan was Zoologist (Studying animals). Both work latter on together to develop cell theory.
Their procedures and Instruments to examine cells are almost same. Both of them tried to examine unicellular as well as multicellular cells.
Answer:
Schleiden being botanist examined plant cells and Schwan being zoologist examined animal cells.