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27.3 Fruit Types and Seed Dispersal
The plumule will be included in the shoot system.
The root system is formed by the radicle.
The endosperm is still present at maturity.
The shoot system and the future root system are protected by the coleoptile and coleorhiza.
The ovary wall is where the pericarp of the fruit develops.
Pick out the origin of the three parts of a seed.
Simple, compound, aggregate, or accessory fruits are examples of dry fruits.
Most people don't know what a fruit is.
A mature ovary can contain other flower parts, such as the receptacle.
Fruits help with dispersal of seeds.
Some fruits perform better at one function than others.
The pit of a peach may make it difficult for it to grow.
Peas are protected only by the seed coat once they are free from pea Pods.
A peach is a fruit.
A tomato is a berry.
A pea is a plant.
Samara is the fruit of a maple tree.
An aggregate fruit is a berry.
A pineapple is more than one fruit.
Fruits can be simple or compound.
A pineapple comes from many individuals.
As in apples, the endocarp may be hard.
The fruits of grains can be mistaken for seeds because of a dry pericarp.
Pea Pods are dehiscent, which means they split open when ripe.
Grains do not split open.
Humans gather grains before they are released from the plant.
The peach and tomato are more familiar to you.
The mesocarp is developed in these fruits.
It is beneficial for plants to diperse their fruits away from the parent plant so that they don't have to compete with the parent for food.
Fruits can be blown to new locations by wind or carried away by animals.
There are many dry fruits.
Adapted to this type of dispersal are woolly hairs, plumes, and wings.
The dandelion fruit uses a parachute for dispersal.
Milkweed seeds float away on white threads when they split open.
The fruit of a maple tree can travel up to 10 km from its parent.
Birds eat seeds from fruits.
Drypods split open, expelling their seeds.
Fruits such as peaches and cherries attract animals and provide them with food.
The hard endocarp protects the seed from being eaten by an animal.
As the flesh of a tomato is eaten, the small size of the seeds and the slippery seed coat mean that tomato seeds rarely get crushed by the teeth of animals.
Birds and mammals excrete their feces some distance from the parent plant when they swallow seeds.
Squirrels and other animals that gather seeds and fruits may forget where they were stored.
The fur of animals and the clothing of humans are attached to a dry fruit by hooks and spines.
Plants with dehiscent fruit are able to dispersal their seeds by forced ejection.
If you walk by a trumpet vine on a hot, sunny day in late spring, you can hear the seeds flying as they burst open.
The shaded side of the seedpods is drying faster than the partially dry side, which causes the partially dry side to pop open.
If the conditions are right, seeds may form a seedling.
Germination doesn't usually happen until there is enough water, warmth, and oxygen.
The requirements help ensure that seeds don't grow until the best season arrives.
Some seeds don't grow until they are inactive for a while.
The seeds have to be exposed to cold weather before they break down.
The fruit is still on the plant.
Page 504 seeds can be used to take up water,bacteria and even fire.
The root emerges first as the eudicot grows.
As the leaves emerge from the soil, the shoot is hook-shaped.
The cotyledons give the new plants enough energy to grow.
The cotyledons grow smaller as the mature leaves begin photosynthesizing.
The bean seeds reveal two cotyledons.
The corn seed has an emerging coleoptile.
The pericarp and seed coat combined make up the outer covering of a corn cob.
The single cotyledon is inside.
The immature leaves and radicle are covered by a coleoptile and a coleorhiza.
As the root grows downward into the soil, the sheaths are discarded.
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