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Assess Yourself

How well have you learned the skills and content in this lesson?

These questions will help you prepare for the lesson quiz. Be sure to read the feedback carefully for any questions you answer incorrectly, and review those topics before leaving this lesson and taking the quiz.


What is the goal of seed dispersal?

  1. parent plants and their offspring will not have to compete for resources 
  2. every seed that a plant makes will not germinate
  3. sperm and egg will be brought together 
  4. endosperm and embryo will be made and protected

The definition of seed dispersal is the moving of embryo-bearing seeds away from the parent plant.

The definition of seed dispersal is the moving of embryo-bearing seeds away from the parent plant.

The definition of seed dispersal is the moving of embryo-bearing seeds away from the parent plant.

The definition of seed dispersal is the moving of embryo-bearing seeds away from the parent plant.

What is ballistochory?

  1. the tissue inside a seed that nourishes the embryo
  2. growth of a new plant
  3. seed dispersal by force 
  4. the combination of sperm and egg

The root "ballo" means "to throw."

The root "ballo" means "to throw."

The root "ballo" means "to throw."

The root "ballo" means "to throw."

During double fertilization, what is made when a sperm cell combines with the polar nuclei?

  1. the embryo
  2. a pollen grain
  3. a seed
  4. the endosperm

Double fertilization consists of two events. In one of these events, a sperm cell combines with polar nuclei to create the endosperm.

Double fertilization consists of two events. In one of these events, a sperm cell combines with polar nuclei to create the endosperm.

Double fertilization consists of two events. In one of these events, a sperm cell combines with polar nuclei to create the endosperm.

Double fertilization consists of two events. In one of these events, a sperm cell combines with polar nuclei to create the endosperm.

Which correctly demonstrates how form follows function in seed dispersal?

  1. a milkweed seed is attached to a piece of fluff to carry it on the wind
  2. an apple seed is hidden deep inside the apple core
  3. a berry seed falls on a patch of soil and germinates
  4. a bean seed is planted in a garden and is eaten by a bird

Form follows function means that the way a seed is shaped gives clues to how the plant disperses that seed.

Form follows function means that the way a seed is shaped gives clues to how the plant disperses that seed.

Form follows function means that the way a seed is shaped gives clues to how the plant disperses that seed.

Form follows function means that the way a seed is shaped gives clues to how the plant disperses that seed.

A certain plant makes brightly colored fruits that have a sweet taste. Which is the most likely way this plant's seeds are dispersed?

  1. the wind
  2. animals
  3. water
  4. force

Many fruits contain seeds that are able to withstand a digestive tract.

Many fruits contain seeds that are able to withstand a digestive tract.

Many fruits contain seeds that are able to withstand a digestive tract.

Many fruits contain seeds that are able to withstand a digestive tract.

What is the ultimate outcome of double fertilization?

  1. a pollen tube
  2. polar nuclei
  3. a seed 
  4. a pollen grain

Double fertilization results in an embryo and endosperm that are enclosed in a seed coat.

Double fertilization results in an embryo and endosperm that are enclosed in a seed coat.

Double fertilization results in an embryo and endosperm that are enclosed in a seed coat.

Double fertilization results in an embryo and endosperm that are enclosed in a seed coat.

Summary

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