What is the definition of specialized stem?

Answer 1

Plant PartsHelpful terms

Herbaceous:

Plants with stems that are usually soft and bendable. Herbaceous stems die back to the ground every year.

Woody:

Plants with stems, such as tree trunks, that are hard and do not bend easily. Woody stems usually don't die back to the ground each year.

Photosynthesis:

A process by which a plant produces its food using energy from sunlight, carbon dioxide from the air, and water and nutrients from the soil.

Pollination:

The movement of pollen from one plant to another. Pollination is necessary for seeds to form in flowering plants.What's the difference between a fruit and a vegetable?

A fruit is what a flower becomes after it is pollinated. The seeds for the plant are inside the fruit.

Vegetables are other plant parts. Carrots are roots. Asparagus stalks are stems. Lettuce is leaves.

Foods we often call vegetables when cooking are really fruits because they contain seeds inside.Play a Plant Parts Game!

What Do Different Plant Parts Do?Plant parts do different things for the plant. RootsRoots act like straws absorbing water and minerals from the soil. Tiny root hairs stick out of the root, helping in the absorption. Roots help to anchor the plant in the soil so it does not fall over. Roots also store extra food for future use. StemsStems do many things. They support the plant. They act like the plant's Plumbing system, conducting water and nutrients from the roots and food in the form of glucose from the leaves to other plant parts. Stems can be herbaceous like the bendable stem of a daisy or woody like the trunk of an oak tree.A celery stalk, the part of celery that we eat, is a special part of the leaf structure called a petiole. A petiole is a small stalk attaching the leaf blade of a plant to the stem.In celery, the petiole serves many of the same functions as a stem. It's easy to see the "pipes" that conduct water and nutrients in a stalk of celery.Here the "pipes" are dyed red so you can easily see them. LeavesMost plants' food is made in their leaves. Leaves are designed to capture sunlight which the plant uses to make food through a process called photosynthesis. FlowersFlowers are the reproductive part of most plants. Flowers contain pollen and tiny eggs called ovules. After pollination of the flower and fertilization of the ovule, the ovule develops into a fruit. FruitFruit provides a covering for seeds. Fruit can be fleshy like an apple or hard like a nut. SeedsSeeds contain new plants. Seeds form in fruit.

Answer 2

Although typical shoots are erect with photosynthetic leaves, over evolutionary time a great assortment of modifications of the basic body plan have arisen. Some clearly benefit storage of materials, others assist in vegetative reproduction(reproduction without seeds), various alterations deter herbivores, and many are simply innovations in ways to hold the shoot upright. The most bizarre of all may be the leaves of the insectivorous plants that are modified to ensnare and digest hapless insects and other small organisms. Some drown their victims in vase-like rainwater-filled petioles while others glue them to the leaf with sticky digestive enzymes. The Venus' flytrap, on the other hand, snaps its leaves together rapidly enough to enclose the unlucky insect that alights on the trigger hair.

You can see many of the modifications in common garden and edible plants. For example:

• Bulbs are underground buds with the stem reduced to a small knob on which fleshy storage leaves are clustered (e.g. dry onions).

• Tubers are fleshy underground stems modified to store starch (e.g. white, or Irish, potatoes). The "eyes" are the nodes with an axillary bud in each (the peel is periderm tissue). Sweet potatoes are roots.

• Rhizomes are horizontal underground stems with nodes, internodes, dry scale leaves, and adventitious roots (e.g. fresh ginger "roots" sold in grocery stores are rhizomes). Canna lilies, iris, and many grasses have rhizomes with which they are propagated.

• Corms are upright underground fleshy stems covered by leaves reduced to dry, covering scales (e.g. gladiolus and crocus). Note that corms store reserve food in stem tissue, and bulbs in leaf tissue.

• Thorns are woody, sharply pointed branch stems (e.g. honey locust).

• Spines are small, unbranched, sharp outgrowths of leaf tissue in which the parenchyma is replaced by sclerenchyma (e.g. cactus).

• Prickles are small pointed outgrowths from the epidermis or cortex of the stem (e.g. rose and raspberry).

• Cladophylls are flattened main stems that resemble leaves (e.g. butcher's-broom, greenbrier, and some orchids). Edible asparagus shoots left to grow produce many small fern-like cladophylls.

• Stipules are paired scales, glands, or leaf-like structures at the base of the petiole formed from leaf or stem tissue (e.g. black locust).

• Bracts are modified leaves at the base of flowers or flower stalks. Some are highly-colored and resemble petals (e.g. the red "petals" of poinsettia are bracts surrounding the small, yellow flowers).

• Tendrils can be exclusively leaf tissue (e.g. pea leaflets, nasturtium petioles, or cucumber leaves that twine and aid in supporting the shoots) or they can be modified special shoots with thin, modified stems (e.g. morning glories, grapes, and Boston ivy).

• Stolons, sometimes called runners, are thin, above-ground, horizontal stems of indeterminate growth and long internodes that grow out from a parent plant and produce young plants at their tips (e.g. strawberry plants, and a host of the most pernicious garden weeds).

  answered by josrael james camara

Answer 3

specialized stems are stems that are specialized to adapt on different environmental changes?

Answer 4

ginger have a specialized stem

Answer 5

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Answer 6

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