Which part of the pistil of the flower does pollen travel through to reach the ovary?
Which part of the pistil of the flower does pollen travel through to reach the ovary?
The stamen is made up of two parts: the anther and filament. The anther produces pollen (male reproductive cells). The filament holds the anther up. During the process of fertilization, pollen lands on the stigma, a tube grows down the style and enters the ovary.
What is the path of pollen through the pistil?
Describe the path of pollen from pollination to fertilization. When pollination occurs, a grain of pollen reaches the stigma and begins to form a pollen tube. The pollen tube begins to grow through the pistil, directed by the tube nucleus. Once it reaches the ovary, it enters the ovule.
What is the part of the pistil between the stigma and the ovary?
The top of the pistil is called the stigma, which is a sticky surface receptive to pollen. The bottom of the pistil contains the ovary and the narrowed region in between is called the style. The male contribution or pollen is produced in the anther, and seeds develop in the ovary.
How does pollen tube grows down through the style?
When a pollen grain lands on the stigma of a flower of the correct species , a pollen tube begins to grow. It grows through the style until it reaches an ovule inside the ovary. The nucleus of the pollen then passes along the pollen tube and fuses (joins) with the nucleus of the ovule.
What happens inside the pollen tube?
The pollen tube ultimately enters an ovule through the micropyle and penetrates one of the sterile cells on either side of the egg (synergids). In an act of double fertilization, one of the two sperm cells within the pollen tube fuses with the egg cell of the ovule, making possible the development of…
Which side is the uterus left or right?
The uterus is neither on the right side of the body nor the left. It is in the middle, or midline. Attached to the right and left sides of the uterus is a fallopian tube and ovary.
Can you get pregnant with a dropped uterus?
Conclusion. Our case shows that pregnancy during uterine prolapse is possible and that careful assessment is required to prevent complications during delivery. According to our experience, an elective caesarean section near term could be the safest mode of delivery.
What are the symptoms of uterus problems?
What are the Symptoms of Uterine Problems?
- Pain in the uterine region.
- Abnormal or heavy vaginal bleeding.
- Irregular menstrual cycle.
- Abnormal vaginal discharge.
- Pain in the pelvis, lower abdomen or rectal area.
- Increased menstrual cramping.
- Increased urination.
- Pain during intercourse.
What can damage your uterus?
A number of medical conditions can affect the uterus (womb), such as polyps, endometriosis, fibroids, adenomyosis, and cancer….Symptoms of diseases of the uterus include:
- Irregular menstrual periods.
- Vaginal discharge18
- Pelvic pain or discomfort.
- Low back pain.
- Trouble urinating.
- Difficulty becoming pregnant19