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Reproduction of Angiosperms

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Reproduction of Angiosperms - Page Text Content

BC: spring

FC: Flowers & bees & Butterfly's Wings | Reproduction of Angiosperms

1: Brought to you by... Grace and Brittany Smiff

2: "No matter how long the winter, spring is sure to follow." ~ Proverb from Guinea

3: "For the winter is past, the rain is over and gone. The flowers are springing up and the time of the singing of birds has come. Yes, spring is here." ~ Song of Solomon 2:11-12

4: the flowers are blooming

5: Stamen: The male reproductive structure that produces pollen. It has two distinct parts | Pistil: female reproductive organ that receives pollen to fertilize the egg that is located in the ovary. | Filament: The stalk of the stamen that supports the anther. | Anther: The part of the stamen in which the pollen is produced | Stigma: The section of the pistil that receives the pollen. Style: the part of the pistil that transports the pollen to the ovary. | Ovary contains ovules which is the structure that contain the egg.

6: Other Structures of an Angiosperm | The petals are the part of the flower that attract or advertise the flower to pollinators, such as bees, butterflies, and humming birds. | Sepals are the part of the flower that cover the immature flower bud, helping to protect seeds or attract pollinators. | The receptacle is the top of the flower stalk where the flower us located.

7: Self Pollination | Self pollination occurs in a plant when its own pollen is shed directly into the stigma of the plant. This occurs most often in smaller plants in temperate regions. Self pollination results in a plant that is genetically similar to the parent, which is not necessarily an advantage. However, there is two reasons why self pollination is advantageous. | 1. It requires less energy and because the plant does not rely on other animals to visit, it does not have to be extravagent and can reproduce in conditions where there are a limited amount of pollinators. | 2. Because meiosis is involved, there is still genetic variation, but the plant continues to keep some type of uniformity. This allows them to be found in various habitats.

8: Pollination | Grace is the best! | Pollination is the transfer of pollen from the stamen of a plant to the stigma. When the pollen from another plant is transferred into a plants stigma it is known as cross pollination.

9: Cross Pollination also occurs by the wind. As the wind picks up pollen from one plant it may be brought to another plant. These plants usually are more dull and have long stamens and pistils. | This occurs when animals like bees, butterflies, or hummingbirds are at the plant in order to get food and the pollen from the plant’s stamen get stuck on them. When the animal moves to another place to feed, the pollen can rub off onto the new plant’s stigma. These plants are usually colorful and have a strong smell.

11: Different Types of Pollinators

12: Different Types of Flowers

13: Perfect Flowers: Have both sexes; stamens and carpels | Complete Flowers: Have all four floral parts: sepals, petals, stamens, and carpels | Incomplete Flowers lack one or more of the four floral parts | Imperfect Flowers lack either stamens or carpels


15: A seed develops from an ovule after fertilization. It consists of a tough coat or testa enclosing an embryo which is made up of a plumule, a radicle and one or two cotyledons. In favourable conditions the seed can grow and become a fully independent plant, bearing flowers and seeds during its life cycle.

16: There are two types of seeds, monocots and dicots. | A seed consists of three parts: a Dormant Embryo, a Storage Tissue, and a Seed Coat. Not every seed that has evolved on this planet has precisely the same structure. In some seeds, the endosperm is retained as the storage tissue. In other seeds, the endosperm is more or less used up to put storage chemicals into the embryo itself | SEED | Dicot

17: A dicot lacks endosperm; its storage material is held in the cotyledons, the other type of seed is a monocot that has a well-developed endosperm Both of these examples qualify as true seeds because they possess all three parts needed to make a true seed. | STRUCTURE | Monocot

18: To clear up an often incorrect fact...Seeds are ripened ovules while fruits are the ripened ovularies or carpels that contain the seeds. | Fruits develop from the maturing ovary, and is the structure that houses the ovule and embryo.They aid in protecting the seeds and also dispersing them. Fruit types is one of the main ways in which taxonomist categorize angiosperms. | FRUITS

19: Fruits are can simple or compound. A simple fruit develops from a single pistil.There are two types of compound fruits: an aggregate and a multiple fruit. A compound fruit develops from several ovaries, and in an aggregate this occurs in one flower, while in a multiple fruit this occurs in separate flowers. Blackberries are an example of an aggregate fruit. Pineapples are multiple fruits.

20: Fruit protects the seeds and provides them with moisture and nutrients . | The fruit of a plant that surrounds the seed, tempts animals to eat the seed , therefore carrying it to a new location. | FRUIT

21: Parts of the Fruit

24: Seeds and Flowers and Fruits | sunny days

25: "No matter how long the winter, spring is sure to follow." ~ Proverb from Guinea | spring is here!

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  • By: Grace S.
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  • Title: Reproduction of Angiosperms
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