The correct answer is (a.) Its spindle-shaped cells allow it to do smooth muscles. The structure of the cardiac muscles which is spindle-shaped is very important for the heart to withstand the stretching of the muscles during the contractions. Also for its smooth surface which is very important to prevent any possible blood clot during circulation.
Answer:
It was thought that plants evolved from stonewort-like algae. New research shows that the closest relatives to land plants are conjugating green algae
Answer:
C. Salt marshes are not productive habitats
Yes. For example, when you have a flute and you have a clarenet right next to each other and they are playing, you will notice that the clarenet is deeper than the flute.
I guess that the endosperm is a unique tissue to the flowering plants. (It helps in their reproduction).
