Angiosperms and Flower Structure

Questions and Answers

What is an angiosperm?

a flowering plant

The flower attaches to what part of the plant?

receptacle

Why are flowers brightly colored?

to attract pollinators

Name two mammals that might pollinate a plant.

possum and bats Signup and view all the answers

If the petals of a flower are reduced or absent, how is the plant pollinated?

usually by wind Signup and view all the answers

The female reproductive structure in a flower is called?

the gynecologic comprising of the style and ovary Signup and view all the answers

Name the three parts of the pistil.

stigma, style, and ovary Signup and view all the answers

Where are the ovules stored?

inside the ovaries Signup and view all the answers

Name the two parts of the stamen.

anther and filament Signup and view all the answers

Describe sexual reproduction in plants.

The flower is the sexual organ of the plant. Pollen (usually carried by an insect, i.e., a bee) from the anther on the filament (all known as the stamen) is carried to another flower and pollinates the stigma. Then it makes a pollen tube that travels down the style to the ovary. They enter through the micropyle. There one sperm nucleus fertilizes the ova, becoming the embryo. The other fertilizes the two polar bodies, which become the endosperm/cotyledon (food for the growing embryo). Signup and view all the answers

The ovary develops into what structure?

the fruit Signup and view all the answers

Define fruit.

A ripened ovary, usually containing seeds. Signup and view all the answers

Some flowers are not brightly colored at all, but have a very pungent odor that smells like rotting meat. How do you think these flowers are pollinated?

The flowers use their stench of rotting meat to attract flies, which pollinate the flowers. Signup and view all the answers

In many flowers, the pistils and stamens reach maturity at different times. Considering what you know about pollination, why would this be an advantage to the plant?

The advantage, or the scheme, is to be pollinated with pollen from another plant. Signup and view all the answers

Study Notes

Angiosperms

Angiosperms are flowering plants that produce flowers and seeds.

Flower Attachment

Flowers attach to the plant at a part known as the receptacle.

Flower Colors

Brightly colored flowers attract pollinators, essential for reproduction.

Mammal Pollinators

Certain mammals, such as possums and bats, play a role in pollination.

Pollination with Reduced Petals

Plants with reduced or absent petals are typically pollinated by wind.

Female Reproductive Structure

The female reproductive structure in flowers is called the gynoecium, which comprises the style and ovary.

Parts of the Pistil

The three main parts of the pistil are the stigma, style, and ovary.

Ovule Storage

Ovules are stored inside the ovaries of the flower.

Parts of the Stamen

The stamen consists of two parts: the anther and filament.

Sexual Reproduction Process

In sexual reproduction, pollen from the anther travels to the stigma, forming a pollen tube that reaches the ovary, where fertilization occurs.

Ovary Development

The ovary of a flower develops into the fruit after fertilization.

Definition of Fruit

Fruit is defined as a ripened ovary containing seeds.

Flowers with Pungent Odors

Some flowers emit a foul odor resembling rotting meat to attract flies for pollination.

Maturity Timing of Pistils and Stamens

Staggered maturity of pistils and stamens helps ensure cross-pollination, enhancing genetic diversity in plants.

Description

Explore the fascinating world of angiosperms, or flowering plants, in this quiz. Learn about flower attachment, the roles of various pollinators, and the anatomy of flowers, including the pistil and stamen. Test your understanding of how these plants reproduce sexually and their unique adaptations.