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Chapter 31.1. Reproductive Structures of Flowering Plants. AP Biology Spring 2011. Floral Structure and Function. Flowers form on a modified branch of the sporophyte when master genes in the _____________ are turned on. Floral Structure and Function.

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Chapter 31 1

Chapter 31.1

Reproductive Structures of Flowering Plants

AP Biology

Spring 2011


Floral structure and function
Floral Structure and Function

Flowers form on a modified branch of the sporophyte when master genes in the _____________ are turned on


Floral structure and function1
Floral Structure and Function

Flower parts are arranged in ________ of modified leaves on the end of the receptacle


Floral structure and function2
Floral Structure and Function

________: outermost green, leaf-like parts arranged in a ring called the __________

________: the coloured parts located between the reproductive structures and the sepals, arranged in a ring called the ___________


Floral structure and function3
Floral Structure and Function

_________: male parts, slender stalk (___________) capped with an _________, inside which pollen sacs enclose pollen grains

________: female parts, vessel shaped structures with an expanded lower ______ (with ovules), slender column (______), and an upper surface (______) for pollen landing


Floral structure and function4
Floral Structure and Function

  • Meiosis of cells within flowers produces ____________ spores

    • _______________ in the anther

    • _______________ in the ovule

  • They then undergo mitosis to produce the haploid ____________ that ultimately become the _____ or _______


Floral structure and function5
Floral Structure and Function

The egg and the sperm fuse to form the diploid zygote

As the zygote develops into a plant, the ______ is formed


Diversity in flower structure
Diversity in Flower Structure

___________________: have all four whorls (sepals, petals, stamens, and carpels)

________________: are missing one or more whorls


Diversity in flower structure1
Diversity in Flower Structure

_____________: have both stamens and carpel (both sexes on one flower)

______________: produce either stamens or carpels and are known as either “male” or “female” flowers


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