Most bryophytes, such as mosses, differ from all other plants in that they a. do not produce flowers produce spores b. have flagellated sperm c. have cones but no seeds d. lack true leaves and roots

Option D

Most bryophytes lack true root and leaves.

Explanation:

Bryophytes are group of non vascular land plants that are found in moist environment. Examples are mosses, liverworts and hornworts. They reproduce by spores and not by flowers. They different from other plant in that they lack true roots, stems and leaves, presence of rhizoids function as roots to anchor the plant to the soil but the rhizoids does not absorb nutrient like other plant root.Bryophytes differ from other land plant in that they do not have xylem, a vascular system use to transport water internally rather they get water and nutrients through their leaves.

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."