Unlike animal cells, plant cells have cell walls that make them rigid. which organelle, other than the cell wall, also plays a vital role in providing rigidity to plant cells? a. nucleus b. chloroplast c. central vacuole d. endoplasmic reticulum

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection