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Rose

life science Maturity 11-13

A rose is a pretty plant.

Roses Boutons FR 2012.jpg
Roses Boutons FR 2012.jpg
It has colorful flowers. The flowers can be red or pink. Some roses have sharp prickles on the stem.
Rose Prickles.jpg
Rose Prickles.jpg
These can poke you. Do you like the smell of roses?

42 words

A rose is a woody plant.

Roses Boutons FR 2012.jpg
Roses Boutons FR 2012.jpg
It can grow as a bush. It can also climb high. Some roses grow up to 23 feet tall.

Many roses have sharp prickles on their stems.

Rose Prickles.jpg
Rose Prickles.jpg
These help the plant hang onto other plants. They can also stop animals from eating them.

Rose flowers come in many colors. They can be white, pink, red, orange, or yellow. Many roses also have a sweet smell.

After the flower fades, a fruit grows. This fruit is called a hip. Hips can be red or even black.

Some rose hips have a lot of vitamin C. Birds eat the hips and spread the seeds. This helps new roses grow.

119 words

A rose is a woody plant with many species.

Rose fields Vampula 1.jpg
Rose fields Vampula 1.jpg
Some roses grow as bushes. Others can climb up to 7 metres tall.
A close-up of climbing roses.jpg
A close-up of climbing roses.jpg
Many roses have sharp prickles on their stems. These are not true thorns. They grow from the outer layer of the stem. These prickles help the plant hang onto other plants. They can also stop animals from eating them.

Rose flowers come in many colors. They can be white, pink, red, orange, or yellow. Most flowers have five petals.

Roseleaves3800px.JPG
Roseleaves3800px.JPG
The leaves grow in a pattern on the stem. Most roses lose their leaves in winter. This is called being deciduous.

After the flower fades, a fruit grows. This fruit is called a hip. Hips are often red, but some are dark purple.

Rose Prickles.jpg
Rose Prickles.jpg
Some rose hips are very rich in vitamin C. Birds eat these hips. The birds then spread the seeds in their droppings. This helps new roses grow in new places. People also grow roses for their sweet smell. This scent is used to make perfumes.

181 words

A rose is a beautiful woody plant from the genus Rosa.

Rose fields Vampula 1.jpg
Rose fields Vampula 1.jpg
There are over three hundred different species of these plants. People have also grown tens of thousands of special garden versions called cultivars. These plants come in many shapes and sizes. Some grow as small shrubs or spread along the ground. Other roses are climbers that can reach 7 metres in height.
A close-up of climbing roses.jpg
A close-up of climbing roses.jpg
Their flowers are often large and showy. You can find them in colors like white, pink, red, orange, and yellow.

Many roses have sharp growths on their stems.

Rose Prickles.jpg
Rose Prickles.jpg
People often call these thorns, but they are actually prickles. Prickles grow from the epidermis, which is the outer layer of the stem. These sickle-shaped hooks help the plant hang onto other plants while it grows. Some species, like Rosa rugosa, have very dense prickles. These might stop animals from eating them. They may also trap wind-blown sand to protect the plant's roots.
Roseleaves3800px.JPG
Roseleaves3800px.JPG

Rose flowers have a very specific way they are built. Most species have five petals, though some have only four. These petals are often white or pink. Beneath the petals are five green parts called sepals. These sepals often look like green points. The petals form a cup shape around the center of the flower. This center contains the ovaries. When these ovaries are fertilized, they grow into a fruit called a hip.

Rosa sulfurea 001.JPG
Rosa sulfurea 001.JPG

Roses have a very long history with humans.

Redoute - Rosa gallica purpuro-violacea magna.jpg
Redoute - Rosa gallica purpuro-violacea magna.jpg
The oldest rose remains were found in the Florissant Formation of Colorado. Some roses were even being grown in China and Persia as far back as 500 BC. In the 1800s, Empress Josephine of France loved rose breeding. She helped develop many new types in her gardens. Today, many garden roses come from old varieties in China. There are now 30,000 to 35,000 different rose hybrids used in gardens.

We use roses in many parts of our lives. Many people grow them just for their beauty.

Bouquet de roses roses.jpg
Bouquet de roses roses.jpg
Others use them to make perfumes. To make rose oil, people use steam to pull scents from crushed petals. This oil is very rare and precious. Some roses are even used in food and drinks. For example, rose water is used in many sweets like baklava.
Gulaab Jamun (homemade!) bright.jpg
Gulaab Jamun (homemade!) bright.jpg
You can even eat the fruit, called hips, which are very rich in vitamin C.

411 words

A rose is a woody perennial flowering plant belonging to the genus Rosa. It is a member of the Rosaceae family.

Rose fields Vampula 1.jpg
Rose fields Vampula 1.jpg
These plants are highly diverse in their physical forms. Some species grow as trailing plants or erect shrubs. Others are climbers that can reach heights of up to 7 metres (23 ft).
A close-up of climbing roses.jpg
A close-up of climbing roses.jpg
There are over three hundred different species in nature. Humans have also created tens of thousands of cultivars, which are specific varieties bred for certain traits. These plants are famous for their showy flowers and often carry a lovely fragrance.

The anatomy of a rose is quite specialized. Most species have leaves that grow alternately along the stem. These leaves are typically 5 to 15 centimetres long and are pinnate, meaning they consist of several leaflets. These leaflets usually have serrated margins, which look like tiny saw teeth. While most roses are deciduous and lose their leaves, some species from Southeast Asia are evergreen.

Roseleaves3800px.JPG
Roseleaves3800px.JPG
The flowers themselves usually feature five petals, though species like Rosa omeiensis only have four. Beneath these petals sit five sepals. These green structures often appear as points alternating with the rounded petals.

Many people call the sharp growths on a rose stem "thorns." However, botanically speaking, these are actually prickles. Unlike true thorns, which are modified stems, prickles are outgrowths of the epidermis. The epidermis is the outer layer of tissue on the stem.

Rose Prickles.jpg
Rose Prickles.jpg
These prickles are often shaped like sickle hooks. This shape helps the plant cling to other vegetation as it climbs. In species like Rosa rugosa, the prickles are straight and very dense. This may protect the plant from being eaten by animals. It may also help trap wind-blown sand to protect the roots in coastal dunes.

Reproduction in roses often relies on insects for pollination. When an ovary is successfully fertilized, it develops into a fruit called a hip.

Rosa sulfurea 001.JPG
Rosa sulfurea 001.JPG
Most hips are red, but some species like Rosa pimpinellifolia produce dark purple or black hips. The hip is an aggregate fruit consisting of a fleshy outer layer called the hypanthium. Inside this layer, there are between 5 and 160 small, dry, single-seeded fruits called achenes. These achenes are embedded in a matrix of fine, stiff hairs. Birds such as thrushes and waxwings eat these hips and help disperse the seeds through their droppings.

The history of the rose is very long. The oldest rose remains were discovered in the Late Eocene Florissant Formation of Colorado. By the early Oligocene, roses were already present in Europe. Humans have cultivated roses for millennia. Evidence shows cultivation occurred as early as 500 BC in China, Persia, and Mediterranean countries. In the 19th century, Empress Josephine of France helped advance rose breeding at her gardens in Malmaison. Many modern garden roses actually trace their lineage back to 18th-century China. Today, the number of bred rose hybrids is estimated to be between 30,000 and 35,000.

Roses are used for much more than just decoration. They are a major source of commercial perfumes. To create rose oil, also known as attar of roses, producers use steam distillation. This process involves using steam to extract volatile essential oils from crushed petals. The resulting oil is a pale yellow or yellow-grey color. It takes a massive amount of flowers to make a small amount of oil. For example, about 2,000 flowers are needed to produce just one gram of oil.

Geraniol structure.png
Geraniol structure.png
This oil contains fragrant alcohols like geraniol and L-citronellol.

Beyond scent, roses have many culinary uses. Rose hips are exceptionally rich in vitamin C. They can be processed into jams, jellies, or syrups. Rose water is a common ingredient in many cultures. It is used in Middle Eastern, Persian, and South Asian sweets.

Gulaab Jamun (homemade!) bright.jpg
Gulaab Jamun (homemade!) bright.jpg
You might find it in treats like baklava, halva, or gulab jamun. Even the petals and young shoots are edible. They are often used to flavor teas or to create candied decorations for desserts. This wide range of uses shows how deeply the rose is connected to human culture and biology.

689 words
🖼️ Images & Media (28)
File:Flag of Saint Lucia.svg
Flag of Saint Lucia.svg
File:Coat of arms of Saint Lucia.svg
Coat of arms of Saint Lucia.svg
File:Et-Viljandi coa.svg
Et-Viljandi coa.svg
File:Tudor Rose.svg
Tudor Rose.svg
File:Text document with red question mark.svg
Text document with red question mark.svg
File:The Roses of Heliogabalus.jpg
The Roses of Heliogabalus.jpg
File:Rose fields Vampula 1.jpg
Rose fields Vampula 1.jpg
File:A close-up of climbing roses.jpg
A close-up of climbing roses.jpg
File:Roseleaves3800px.JPG
Roseleaves3800px.JPG
File:Geraniol structure.png
Geraniol structure.png
File:Bouquet de roses roses.jpg
Bouquet de roses roses.jpg
File:Maria Amelia of Braganza.jpg
Maria Amelia of Braganza.jpg

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