Answer: Sieve tubes and cytoplasm.
Explanation:
Chromosome is to cactus as gene is to a needle.
There is external and internal so I'll list th external. The most important is skin then mucus, sweat or secretion, hair, nails and tears which are all part of the integumentary. Some internal defenses are white blood cells and T cells.
yes, and???????, you need to put more detail, that would be considered a Statement not a question.
