Lab: Reproductive Structures in a Flower, biology homework help

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Pre-Lab Discussion:

Flowers are the reproductive organs of angiosperms, or flowering plants. Flowers vary in size, color and arrangement. All flowers, regardless of variety, have the function of seed formation and are responsible for the production of more plants. Flowers contain both non-reproductive and reproductive structures.In this investigation you will examine a flower and identify its non-reproductive parts and its reproductive parts. You will also observe the male and female sex cells produced by a flower underneath a microscope.

Problem:

How is a flower adapted for sexual reproduction?

Hypothesis:

answer of the problem

Data Table:

Flower name

Number of Sepals

Color of Sepals

Number of Petals

Color of Petals

Tulip

6

Pinkish & yellow

Analysis:

A. List the function of each of the following parts and note whether the parts comprise the pistil or the stamen.

1 –anther 2 –filament 3 –ovary 4 –ovule 5 –pollen 6 –stigma 7 –style

B. Why does a flower have more pollen grains than ovules?

C. Explain why heavy rainfall on a fruit orchard in the spring might result in a poor fruit yield in the fall.

D. For what biological reason might farmers object to people picking apple blossoms during the apple blossom season?

E. Flowers that are pollinated by the wind have smaller petals and sepals than flowers that arepollinated by insects or animals. Why are small petals and sepals an advantage to these flowers?

F. Why do flowers that are pollinated by insects have large, brightly colored petals?

Conclusion:

Conclude the hypothesis and identifies sources of error as they relate to results

 
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