The mesozic era includes the period

"This era includes 3 well known periods called the Triassic, Jurassic, and Cretaceous periods."

3 well known periods called the Triassic, Jurassic, and Cretaceous periods

I think thats  the answer and if not sorry

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).