9.4: Reproduction in plants

Key Vocabulary

prior learning & retrieval practice

A1: Methods used to induce short-day plants to flower out of season.

• Guidance Flowering in so-called short-day plants such as chrysanthemums, is stimulated by long nights rather than short days.

Exercise 1: Create a presentation and screencast outlining the methods used to induce short day plants out of season

S2: Drawing of half-views of animal-pollinated flowers.

Exercise 2: Complete the quizlet learn exercise below

U1: Flowering involves a change in gene expression in the shoot apex.

U2: The switch to flowering is a response to the length of light and dark periods in many plants.

Exercise 3: Explain how phytochrome

U3: Success in plant reproduction depends on pollination, fertilization and seed dispersal.

U4: Most flowering plants use mutualistic relationships with pollinators in sexual reproduction.

NoS: Paradigm shift—more than 85% of the world’s 250,000 species of flowering plant depend on pollinators for reproduction. This knowledge has led to protecting entire ecosystems rather than individual species. (2.3)

S1: Drawing internal structure of seeds.

S3: Design of experiments to test hypotheses about factors affecting germination.

Guidance:

• Students should understand the differences between pollination, fertilization and seed dispersal but are not required to know the details of each process.

Essential idea: Reproduction in flowering plants is influenced by the biotic and abiotic environment.