Name:

Class:

Angiosperm Reproduction Lab

  1. Use a razor blade to carefully cut your flower in half top to bottom as directed by your teacher.
  1. Draw a picture of your flower in the space below.
  1. Label the following parts of your flower: Sepals, petals, pistil, stigma, style, ovary, ovules, stamen, anther, filament, pollen grains.
  1. Write the function of each of the following parts:

Sepals

Petals

Pistil

Stigma

Style

Page 2

Ovary

Ovules

Stamen

Anther

Filament

pollen grains

  1. Put an M, next to each male part in question 4 and an F in front of each female part in question 4.
  1. Why do some flowers have brightly colored flowers?

7. Why do some flowers have good smelling nectar?

  1. What can you infer about how flowers without brightly colored petals or nectar are probably pollinated?
  1. Explain how the process of double fertilization occurs in flowers (include both sperm cells).
  1. What does a mature ovule become?
  1. What does a mature ovary become?

Part 2 - SEEDS

  1. Carefully observe the outside of a bean seed.
  1. Draw the outside of a bean seed in the space below. Label the micropyle, hilum and seed coat.
  1. What is the micropyle from?
  1. What is hilum from?
  1. Why does the seed have a seed coat?
  1. Carefully open the bean seed into two halves.
  2. Draw both sides of the split open bean seed. Label the embryo, hypocotyl, epicotyl, radicle and cotyledons.
  1. What does the radicle develop into?
  1. What does the hypocotyl develop into?
  1. What does the epicotyl develop into?
  1. What is the purpose of the cotyledons?
  1. Which part was the endosperm?

Page 4

  1. Examine a corn seed. Draw a corn seed as it looks from the outside. Label the seed coat and identify where the seed attached to the cob.
  1. Cut the corn seed in half lengthwise as directed by your teacher. Draw the inside as it looks. Label the endosperm, cotyledon, epicotyl, hypocotyl, radicle and embryo.

15. Is a bean a monocot or a dicot? How can you tell?

16. Is corn a monocot or a dicot? How can you tell?

  1. Observe the bean seeds that have been growing for several days. Draw the growing bean seed below. Label the visible parts.
  1. Which part of the embryo plant comes out from the bean seed first?

19. Why does this part come out of the seed first? (Hint: Think about what the seed needs at this time to grow.)