What are angiosperms? Angiosperms PowerPoint presentation free download. Introduction to Angiosperms. Habit and habitat of Angiosperms. Distribution of angiosperms.
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Angiospermss
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2. What are angiosperms?
Angiosperms are the flowering, vascular and seed
bearing plants
They produce seeds contained in fruits
The fruit is developed from the parts of reproductive
structure, the flower
This group of plants is the dominant form of plant life
on the planet
They are the major source of food for humans and
other mammals
About 260,000 species are known
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3. Habit and Habitat
The plants of this group are mostly shrubs, herbs, and
most familiar trees
They may be very large tress. e.g. Eucalyptus
Or may be tiny plants. e.g. Duckweed (1mm in diameter)
They are found everywhere except the polar regions,
highest mountain tops, and the deep oceans
They may occur as terrestrial plants, epiphytes,
floating and rooted aquatics, parasites and
saprophytes
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4. Euclayptus Duckweed
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5. Morphology
Flower is the most significant part of the angiosperms
It is the reproductive part of the plant which produces
seeds
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6. Parts of the flower
Male Parts
1. Stamen
Made up of filaments and anther
Produces pollens
Number of stamens is usually same as the number of petals
Anther
Part of the stamen that produces and stores pollen
It is usually found at the tip of a stalk
Filament
This is the stalk that the anther sits on top of
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7. Parts of the flower
Female Parts
1. Stigma
Receives pollen from the male part
2. Style
Long stalk like structure between ovary and stigma
3. Ovary
Is usually found at the bottom of the flower
Produces seeds inside and turns into fruit upon ripening
4. Ovule
The part of the ovary that becomes seed
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8. Carpel
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9. Other parts of flower
Petals
They are modified and colorful leaves of a flower
They attract pollinators towards the flower
Sepals
They are also modified leaves but are green in color
They cover the petals and protect them
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10. Evolution of Angiosperms
The closest relatives of the angiosperms remain a
mystery but the unique angiosperm flower probably
evolved from an extinct angiosperm group that insect
pollinated cones, combining male and female
reproductive parts
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11. Evolutionary Adaptations
1. The development of the flower
The male and female structures are now in the same
location on the plant, with a few exceptions, before
in angiosperms,
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12. Evolutionary adaptations
2. Pollination aided by
biotic factors.
Most plants have used
abiotic factors such as
water or wind.
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13. Evolutionary adaptations
3. The development of a
seed that contains energy
as well as the
development of a fruit for
protection and dispersal
Most of the fruits we eat
allow the seed to be
dispersed away from the
parent plant
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14. Two kinds of flowering plants
Monocots –
Mono – meaning one Cotyledon - seed leaf
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15. Monocots Continued.
Primary food source for
much of the planet
Whether we eat them or we
feed them to other animals
so we can eat the animals
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16. Monocots – even more
Maiz
Wheat
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17. Dicots
Di – meaning two Cotyledon – seed leaf
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18. Dicots
Most of our fruits
and vegetables are
dicots.
Lots of energy here
as well, but they
usually don’t store.
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19. Other dicots…
Some that contain wood
Some that don’t
Lots that are in between.
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21. 1- Apple (Malus domestica)
Apple juice is used as anti-inflammatory for the digestive
tract
It decreases the acidity of the stomach
Apple acts as both antidiarrheal and soft laxative
Its juice helps to dissolve access fats, thus decreasing
obesity
It is also used to treat cough and bronchitis
Decreases the risk of cancer, esp. of digestive tract
Reduces fever
Enhances the hearing ability
Apple juice is a good skin conditioner
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22. 2. Grapes (Vitis vinifera)
Grapes are source of many essential metals (cobalt,
iron) and vitamins (B1, B2,В6, В12)
Its juice has been used to treat metabolism disorders
Grapes are also beneficial in treating the disorders of
liver, kidney, lungs as well as cardiovascular problems
This fruit is anti-inflammatory and laxative
Grapes help with nervous disorders, hypertension,
high blood pressure and bronchitis
It helps to get rid of anemia
It has also been proved beneficial in treating
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23. 3. Apricot (Prunus armeniaca)
Contains vitamin B-17 and many other useful nutrients
Decreases the risk of cancer
Boosts the immune system
It acts as a laxative and also adds in digestion
It has been proved useful for treating anemia
It is useful in treating respiratory disorders
It treats the cough
Apricot is used to make medicines for the skin diseases
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24. 4. Pomegranate (Punica granatum)
Pomegranate juice is cardio-protective, as it regulates the
level of LDL and cholesterol
Thus it is a good tonic for the heart
It enhances the function of liver and kidneys
It is a good laxative and also treats stomach inflammation
It has been proved as anticancer and inhibitor against TB
Its juice inhibits the replication of many viral genomes
including herpes simplex virus
Juice of pomegranate decreases fever due to its antiseptic
properties
It is also beneficial in diarrhea Biology Website.
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25. 5. Cherry (Prunus avium)
It is a remedy for insomnia, arthritis, nausea, depression,
headache and abdominal cramps
It destroys the pathogens which cause diseases
It is also high in antioxidants that help to fight cancer and
heart disease
Cherry is low in cholesterol, fat and sodium. It is also a very
good source of fiber and Vitamin C
It reduces body and muscle pain,
and also reduces the risk of colon
cancer
Cherry improves memory
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26. 6. Pear (Pyrus communis)
Enhances the function of kidney
Pear is beneficial in obesity, hypertension, dropsy
(edemas), nephritis, kidney stones and in
inflammation of urine bladder
The juice of pear is applied externally on the body to
reduce pain
It is the source of vitamins, and helps in loss of excess
weight
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27. 7. Peach (Prunus persica)
It has antioxidant properties, thus it prevents the
cancer
Its ingredients (carotenes) keep our arteries healthy
Ingredients of peach enhances our sight
It strengthens our skin against sun light and also
prevents dryness of skin
Treats digestive ulcers
It possesses an ingredient selenium, which provides
stability to the heart
Strengthens bones and also enhances the nervous
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28. Importance of Angiosperms
They are the source of 80% of world’s food
They provide O2
They are the source of many medicines
Angiosperms provide lumber for construction and the
manufacturing of furniture
They provide fuel
Clean our atmosphere
Large trees are affective wind breakers
Decrease soil erosion
Provide habitat for many organisms
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