<h2>Answer and Explanation </h2>
The term secretion basically meant the release of a useful substance by a gland or cell. While the secretory cells secrete collagen and other proteins that provide strength while holding the body. The secretory cell-like digestive enzymes, antibodies, and mucus. The most important function of the secretory cell from the endocrine gland is to form cell plasma membrane called porosomes.
Cos they dont have vascular structure that can defeat gravity and transport water and minerals
Mitochondria- all eukaryotic cells use mitochondria to go through cellular respiration and get the energy they need to maintain homeostasis (survive).
A mule is a hybrid between a horse and a donkey (a male horse and a female donkey). Mules cannot produce offspring so it is under Hybrid Sterility, which falls under Letter D: a postzygotic barrier.
A postzygotic barrier diminishes the ability to reproduce of hybrid offsprings.
<span>Trends are based on patterns, so to determine if there is a correlation between things, there needs to be linkage. Similarly, one must think of ways to disprove the correlation in order to determine the strength.</span>