TASK DEFINITION: Combine the given two facts to write a concluding fact. Note that there should be some parts of the first and second facts that are not mentioned in this conclusion fact. Your combined fact should be the result of a chain between the two facts. Chains form when two facts connect together to produce a concluding fact. An example of a chain is: "pesticides cause pollution" (fact1) + "pollution can harm animals" (fact2) → "pesticides can harm animals" (conclusion fact). Parts of the concluding fact overlap with the first and the second fact. To construct such a  concluding fact, a useful way is to borrow the subject from one fact and the ending conclusions from another fact.
PROBLEM: Fact 1: Most bryophytes are small. 
Fact 2: Bryophytes are very old land plants.

SOLUTION: Most very old land plants are small.

PROBLEM: Fact 1: Chloroplasts contain the green pigment chlorophyll. 
Fact 2: Mitochondrion and chloroplast for example are organelles.

SOLUTION: organelles contain chlorophyll.

PROBLEM: Fact 1: the digestive system breaks food into nutrients for the body. 
Fact 2: Tapeworms have no digestive system and consist primarily of a reproductive system.

SOLUTION:
Something that tapeworms do not have breaks food into nutrients for the body.