From the anther the pollen grains are first deposited on the pistil’s surface, the stigma. There they germinate and form pollen tubes, which grow downward through the style toward the ovules. Fertilization occurs as a sperm cell in a pollen tube fuses with the egg cell of an ovule, resulting in a plant embryo.

After pollen grains land on the stigma, a pollen tube grows from the pollen grain, through the style, and into the ovary. Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules. Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule.

After fertilization occurs, each ovule develops into a seed. Each seed contains a tiny, undeveloped plant called an embryo. The ovary surrounding the ovules develops into a fruit that contains one or more seeds.

Post-fertilization changes in flower are: 1) The sepal, petal and stamen of the flower withers and fall off only pistil remains attached to the plant. 2)The ovules develop into the seed. 3)The zygote develops into the embryo.

People who suffer from BPD can also experience problematic relationships, high levels of anger and anxiety, and engage in substance abuse or self-harm. There is a large stigma surrounding this disorder, as it is generally misunderstood and can require significant and specialized types of therapy to treat.

Mental health stigma refers to societal disapproval, or when society places shame on people who live with a mental illness or seek help for emotional distress, such as anxiety, depression, bipolar disorder, or PTSD.

Stigma can also be thought of as related to the person with the illness or the act of seeking treatment. A person with SAD may be stigmatized for having symptoms of social anxiety, but also may experience stigma for seeking help for a problem that some may feel is “all in their head” or that everyone deals with.

Stress is a defense mechanism. When under stress, your body releases hormones. These hormones cause increased brain activity, raise your pulse, and cause muscle tension. Stress can help you overcome challenging situations, but sustained stress can be harmful.

Research suggests that depression doesn’t spring from simply having too much or too little of certain brain chemicals. Rather, there are many possible causes of depression, including faulty mood regulation by the brain, genetic vulnerability, stressful life events, medications, and medical problems.