Describe what would happen when pollen grains lands on the stigma.

When a pollen grain lands on the stigma of a flower, the process of pollination begins. Here are the steps:

1. Pollen Landing: The process starts when pollen from the anther (male part) of a flower is transferred to the stigma (female part) of the same or another flower. This can happen through wind, water, or animals like bees and butterflies.

2. Germination: Once the pollen grain lands on the stigma, it begins to germinate if the conditions are favorable. This means it starts to grow a pollen tube down through the style towards the ovary of the flower.

3. Pollen Tube Growth: The pollen tube carries the male gametes (sperm cells) from the pollen grain. The tube grows down the style by digesting the tissues of the style using enzymes.

4. Fertilization: When the pollen tube reaches the ovary, it penetrates one of the ovules. The sperm cells then move down the tube and into the ovule where they fertilize the female gametes (egg cells), resulting in a zygote.

5. Seed and Fruit Formation: The fertilized ovule develops into a seed, and the ovary develops into a fruit surrounding the seed. This process is known as fertilization.

6. Plant Growth: If the seed lands in a suitable location and conditions are right, it can germinate and grow into a new plant, starting the cycle again.

When a pollen grain lands on the stigma of a flower, the process of pollination begins. Here are the steps:

1. Pollen Landing: The process starts when pollen from the anther (male part) of a flower is transferred to the stigma (female part) of the same or another flower. This can happen through wind, water, or animal pollinators like bees and butterflies.

2. Germination: Once the pollen grain lands on the stigma, it begins to germinate if the conditions are right. This means it starts to grow a pollen tube down through the style towards the ovary of the flower.

3. Pollen Tube Growth: The pollen tube carries the male gametes (sperm cells) from the pollen grain. The tube grows down the style by digesting the tissues of the style using enzymes.

4. Fertilization: When the pollen tube reaches the ovary, it penetrates one of the ovules. The sperm cells then move down the tube and into the ovule where they fertilize the female gametes (egg cells), resulting in a zygote.

5. Seed and Fruit Formation: The fertilized ovule develops into a seed, and the ovary develops into a fruit surrounding the seed. This process is known as seed and fruit formation.

6. Dispersal: The fruit is eventually dispersed, by various means such as wind, water, or animals, and if it lands in a suitable location, the seed can germinate and grow into a new plant, thus completing the life cycle of the plant.