AP Biology : Understanding Seeds, Flowers, and Fruits
Study concepts, example questions & explanations for AP Biology
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Example Questions
Example Question #3 : Macrostructures
Which of the following is a method plants use to attract potential pollinators?
Production of nectar in its flowers
Production of a foul or sweet odor
Formation of bright or colorful flowers
All of these
All of these
Attracting pollinators is key for many plants' success. There are a variety of strategies plants use such as the creation of nectar or odor as well as bright colors to attract pollinators. Also, some plants have ultraviolet patterns on their flowers to direct animals toward their nectar to facilitate pollination.
Example Question #4 : Macrostructures
What strategies might a plant use to disperse its seeds?
The seeds may float and be carried by rain or streams
All of these
The seeds may survive animal digestion and be relocated when the animal defecates
The seeds may be blown by the wind
All of these
Seed dispersal is key to plant success and plants use a wide variety of strategies to facilitate this process. Plants use all the listed strategies in order to spread their seeds. They also make seeds with adhesive properties that stick to animals that pass by. The seeds are then brushed off some time later at a different location.
Example Question #1 : Understanding Seeds, Flowers, And Fruits
Which of the following are not a part of a flower?
Ovary
Leaf
Petal
Anther
Stigma
Leaf
Leaves are the sites of photosynthesis. Petals are specialized leaves that help attract pollinators. The stigma collects pollen, and facilitates its passage down the style to the ovary to fertilize the ovules (eggs). Anthers produce pollen. The ovary contains a collection of 1 or more ovules.
Example Question #2 : Understanding Seeds, Flowers, And Fruits
A fruit develops from the __________ of a flower.
anther
pedicel
stamen
ovary
stigma
ovary
Once a plant is fertilized, the ovary will ripen around the developing seed of a plant and become a fruit. These fruits perform many functions including protection, provision of nutrients for the developing plant embryo, and aid in dispersal. The pedicel is the stem that connects the flower to the rest of the plant. The stigma is the sticky tip of the pistil that receives pollen from the environment. The stamen is the male section of the flower and the anther is the tip of the stamen that disperses pollen.
Example Question #3 : Understanding Seeds, Flowers, And Fruits
The primary function of the stamen is to __________.
protect the developing bud of a flower
attract pollinators
receive pollen in order to fertilize the ovule
produce and distribute pollen
collect water and nutrients from the soil
produce and distribute pollen
The stamen is the male part of the flower which produces and distributes pollen. The female part of the flower is called the pistil and it receives pollen in order to fertilize the ovule. Roots are the structures that collect water and nutrients from the soil. Colorful petals and sugar-rich nectar are among the objects that are used are used to attract pollinators. Sepals are the leaf-like structures that protect the developing bud of a flower.
Example Question #4 : Understanding Seeds, Flowers, And Fruits
Which of the following is not a function of the flower in angiosperms?
Attract pollinators
House reproductive structures
Facilitate pollination
Flowers repel predators
Flowers repel predators
Flowers are important structures in angiosperms that facilitate reproduction. They do this by housing reproductive structures, attracting pollinators, and providing a space that permits pollination.
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