The high sugar concentration inside phloem causes water to move into it. This process, which requires no energy from the plant, is called .

The correct answer is osmosis

Explanation:

Osmosis is a process through which water moves from an area which is having a low concentration of solute to an area that is having a high solute concentration through a semi-permeable membrane.  

As the water or liquid moves down its concentration gradient so energy is not required in this movement. So the high sugar concentration in the phloem causes water to move inside it along the concentration gradient without energy is called osmosis. Osmosis is a form of diffusion.

"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."

answer: b

coz red blood cells marrow and circulates the body for 120 days.