Review Plants-3

This is Kalanchoe daigremontiana, also known as Devil's Backbone or Mother of Thousands. Each of the tiny bumps on its leaves is a developing, new plant. When they are mature enough, they will separate from the parent plant, fall to the ground, and take root. This plant reproduces both asexually with its leaves, and sexually with its flowers. What is the advantage of sexual reproduction?

  1. Sexual reproduction is faster.

    No. Asexual reproduction using its leaves is actually faster than sexual reproduction, and allows the plant to produce more offspring.
  2. Sexual reproduction lets the plant produce more offspring.

    No. This plant produces more offspring by asexual reproduction than it does by seeds.
  3. Sexual reproduction prevents the plant from passing on harmful mutations.

    No. Both sexual and asexual reproduction can pass a mutation on to the offspring.
  4. Sexual reproduction gives the offspring genes from both parents.

    Yes! The main advantage of sexual reproduction is that the offspring gets half of its genetic material from each parent. This plant can reproduce asexually by producing the new, tiny plants on its leaves, but they are genetically the same as the parent. A disease or parasite which was fatal to one would be fatal to all. When it reproduces by flowers and seeds, half of the genetic material comes from the plant, and half comes from the pollen that fertilized seed. This produces offspring that have genetic variations, giving them a better chance of surviving. The survivors can then reproduce asexually to produce thousands of new plants with those traits.



Click to see which state standards this question tests, and which of my videos, experiments, and other resources support that topic.

Florida


SC.3.L.14.1 Describe structures in plants and their roles in food production, support, water and nutrient transport, and reproduction.
Flowers video, ClosedCaptions
Heartless Plants video, ClosedCaptions
Pumpkin Guts video, free, ClosedCaptions
Measuring Photosynthesis video
Seed Search video, ClosedCaptions
Orange Slices video, ClosedCaptions
Testing a Leaf for Starch video, ClosedCaptions
Smell the Flowers text page
Review Plants-2 practice
Review Plants-5 practice
Review Plants-6 practice
Review Plants-7 practice
Review Plants-8 practice
Review Plants-3 practice

SC.4.L.16.1 Identify processes of sexual reproduction in flowering plants, including pollination, fertilization (seed production), seed dispersal, and germination.
Pumpkin Guts video, free, ClosedCaptions
Seed Search video, ClosedCaptions
Orange Slices video, ClosedCaptions
Flowers video, ClosedCaptions
Review Plants-3 practice
Review Plants-2 practice
Review Plants-6 practice
Review Plants-7 practice
Review Plants-8 practice

SC.7.L.16.3 Compare and contrast the general processes of sexual reproduction requiring meiosis and asexual reproduction requiring mitosis.
Review Plants-3 practice

Utah


UT.7.IV.1.b Contrast the exchange of genetic information in sexual and asexual reproduction (e.g., number of parents, variation of genetic material).

NGSS


4-LS1-1 Construct an argument that plants and animals have internal and external structures that function to support survival, growth, behavior, and reproduction.
Seed Search video, ClosedCaptions
Orange Slices video, ClosedCaptions
Bird Bones video, free
Feathers video
Heartless Plants video, ClosedCaptions
Nature Watching video
Calling a Woodpecker video
Pumpkin Guts video, free, ClosedCaptions
Eye Shine text page
How Does a Butterfly Fly? text page, free
Thoughts on an Exoskeleton text page, free
Review Plants-1 practice
Review Plants-5 practice
Review Plants-6 practice
Review Plants-7 practice
Review Plants-8 practice
Review Plants-3 practice

MS-LS4-4 Construct an explanation based on evidence that describes how genetic variations of traits in a population increase some individuals’ probability of surviving and reproducing in a specific environment.

MS-LS3-2 Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation.