Reproduction and Growth

Which of the following sentences describes the ways plants spread their seeds? Choose the two that apply.

• Bees, attracted by brightly colored flowers, pick up and move seeds to new locations.

• Animals, attracted by scent, eat and then disperse seeds in new locations through their droppings.

• Seeds are carried away from the parent plant by wind or water.

• Seeds are dispersed during pollination.

Grafting is when part of a plant’s stem is cut and then attached to another plant. Apple farmers often use grafting to ensure that new plants will have the desired characteristics of the original apple tree. What kind of reproduction is this?

• stem sprouting

• fertilization

• sexual

• asexual

Tags

NGSS.MS-LS3-2

Dakota recently heard elk in a valley bugling. He knows that animals have different strategies that help them to reproduce successfully and that the bugling is a mating call to attract females

Making this type of sound is an example of what type of reproductive strategy?

• Parental care

• Cooperative behavior

• Communication

• Migratory behavior

Tags

NGSS.MS-LS1-4

Ian’s father keeps bees, and Ian spends time observing their behavior. He is especially interested in the bee communication and has even seen the waggle dance. The waggle dance communicates the location of food to other bees in the hive. All honeybees know the waggle dance from birth.

The waggle dance is an example of a(n) _____behavior, because bees can perform it correctly the first time.

• Learned

• Predatory

• Instinctive

• Courtship

Hannah heard wolves howling in Yellowstone National Park while vacationing with her family. When she returned, she researched wolf behavior and learned a great deal about animal communication. Hannah found out that along with sounds, wolves communicate through body language and the use of scents, including urine and pheromones.

What would be the advantage of pheromone communication for reproduction?

• It sends a threatening signal to competitors.

• It warns other species to stay away.

• It sends a message that an individual is ready to mate.

• It expresses dominance and mating interest.

Tags

NGSS.MS-LS1-4

Sophia loves the fall because the days begin to cool and the leaves change to beautiful shades of red, yellow, and orange, but she wonders why the leaves change.

The cause of the leaves changing is____________, and the response is dormancy.

• gravity

• photoperiodism

• tropism

• chemotropism

Connor found a bird’s nest holding two tiny eggs, and planned to watch for the eggs to hatch. He understands that mammals have a different way of reproducing. Which of the following describes one difference between amniotic eggs and placental mammals.

• In amniotic eggs, the eggs provide nutrients, while in placental mammals, the embryo develops inside the mother’s body.

• Amniotic eggs develop inside a mother’s body, but placental mammals develop outside of a mother’s body.

• Both amniotic eggs and placental mammals have eggs with leathery shells.

• Amniotic eggs are covered with membranes and placental mammals are covered with a leathery shell.

While out hiking in the woods, Ian sees several wild grapevines wrapped around some tree trunks and branches. He notices the broad leaves and curling, forking tendrils of the vines that loop around the tree branches. This makes him think about the factors that influence the way things grow. Which factors contribute to the way organisms grow and develop? Choose the three that apply.

• genetics

• size

• response to stimuli

• structures

• access to resources

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS3-1

What type of plant life cycle is illustrated in this image?

• gymnosperm

• angiosperm

• non vascular plant

• fern