Fruit Formation Flashcards
What is the definition of a fruit?
A fruit is a developed ovary
What happens as the seed is developing?
The surrounding ovary becomes the fruit
What stimulates the process of fruit formation?
Growth regulators (auxins) produced by the seeds
What do growth regulators (auxins) produced by the seeds stimulate the process of?
The process of fruit formation
What produces growth regulators (auxins)?
The seeds
What does the wall of the ovary become?
The wall of the ovary becomes the wall of the fruit (the pericarp)
What is the pericarp?
The wall of the fruit
What is the wall of the fruit called?
The pericarp
What becomes the pericarp?
The wall of the ovary
What is the function of the fruit?
2
To protect the seed (s)
To help in seed dispersal
What are the three different types of fruit (general)?
Succulent/fleshy
Dry
Grains
Give some examples of succulent or fleshy fruits.
4
Tomatoes
Grapes
Peaches
Plums
Give some examples of dry fruits.
5
Pea pods
Green beans
Monkey nuts (peanuts in the shell)
Popcorn grains
Grass grains
Why are grains called fruits?
Because they have an internal seed and the fruit wall is attached to the seed wall
Give some examples of grains
2
Grass
Cereals
What happens when the fruit forms?
The rest of the flower parts die and fall away
What does the ovule become after fertilisation?
Seed
What does the integuments become after fertilisation?
Testa (seed coat)
What does the nucellus become after fertilisation?
Endosperm –> cotyledon (s)
What does the egg become after fertilisation?
Zygote –> embryo (plumule, radicle, cotyledon (s))
What does the polar nuclei become after fertilisation?
Endosperm
What does the ovary become after fertilisation?
Fruit
What does the ovary wall become after fertilisation?
Pericarp (fruit coat or wall)
What becomes the seed after fertilisation?
The ovule
What becomes the testa after fertilisation?
Integuments
What becomes the endosperm –> cotyledon(s) after fertilisation?
Nucellus
What becomes the zygote –> embryo after fertilisation?
Egg
What becomes the endosperm after fertilisation?
Polar nuclei
What becomes the fruit after fertilisation?
Polar nuclei
What becomes the pericarp after fertilisation?
The ovary wall
