Exercise 15

1
Exercise 15

• Flowering Plants-
• Fruits and Seeds

Introductory Notes Fruits are the thickened ovary
walls of the flower.
2
Seeds

• Highlight or underline Seeds are matured
  ovules. They contain an embryonic plant, stored
  food in the form of endosperm or cotyledons and a
  seed coat.

3
Goals

• Highlight or underline define seed
• Identify the parts of a bean and corn seed
• Define fruit
• Identify fruit types
• Differentiate between a simple and compound
  fruit.

4
Figure 15.1
Micropyle
Hilum
Seed Coat
Answer to question 1. It has been absorbed by the
cotyledons
5
Epicotyl
Hypocotyl
Radicle
Cotyledon
Figure 15.2
Answer Question 2
6
Caruncle
Hilum
Raphe
Answer to question 4 It will germinate faster
Answer Question 3 They are smaller
Figure 15.3
7
Corn (Zea mays)

• Highlight or underline a kernel of corn is
  really a fruit containing a single seed.
• The fruit wall is thin, transparent and fused
  with the seed coat.

8
Figure 15.5
Endosperm
Epicotyl
Scutellum
Hypocotyl
9
Figure 15.6
Endosperm
Pericarp
Cotyledon
Coleoptile
Plumule
Radicle
Coleorhiza
10
Fruits

• Highlight or underline
• a fruit is a ripened or matured ovary with any
  other associated flora parts fused to it.
• They may be modified for protection and seed
  dispersal.
• Three distinct regions can be recognized outer
  exocarp, middle mesocarp, and inner endocarp. All
  there comprise the pericarp.
• There are dozens of fruit types divided into
  various categories.

11
Pecans
Nuts
12
Pome
13
Aggregate
14
Achene
15
Pineapple
Multiple Fruit
16
Iris
Capsule
17
Corn
grain
18
Walnut
Nut
19
Drupe
Coconut
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Almonds
Drupe
21
Acorn
Nut
22
Justa - Nut
23
Berry
24
Follicle
Milkweed
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Legume
Black Locust
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Tomato
Answer to question 6 Epigenous
Answer to question 7 see page 158
Mesocarp
Seeds
Endocarp
Figure 15.7
Exocarp
Locule
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Sunflower
. Draw and label 15.8
Pericarp
Answer to question 8 Achene
28
Apple
Answer to question 9 epigenous
Answer to question 10 Receptacle
Question 11 see page 158
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Receptacle
Exocarp
Mesocarp
Locule
Seed
Endocarp
Old sepals
Figure 15.9
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Answer to question 12
Vascular bundles
Answer to question 13 is based on answer to 12.
seed
endocarp
Receptacle
Figure 15.10
31
Strawberry
Answer to question 14 Hypogenous
To answer to question 15 see page 158
Fig 15.11
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How can you tell the Iris is a monocot?
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Question 17

• Misconception
• Vegetable
• Seed
• Seed
• Berry
• Nut/Seed
• Nut/Seed

• Botanical Truth
• Fruit
• Fruit
• Fruit
• Aggregate
• Drupe/Fruit
• Drupe/Fruit

34
Not Seeds But Fruits
Common Feature?
Dandelion achenes
Milkweed follicle
35
Correlation?
36
Functions of Fruits

• If you do not know see notes

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Questions 6-7

• 6. Shoot stems and leaves
• 7.
• Corn transfers endosperm
• Bean stores endosperm

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Question 8

• Algae not currently considered plants
• Bryophytes move to land
• Ferns Vascular tissue
• Gymnosperms seeds -no need for water to carry
  sperm to egg
• Angiosperm fruit to cover seeds