didactic unit outline parts of a flower:

What Are the Parts of a Flower?

Most plants reproduce with the help of flowers. Help Bud and Sprout name each part of the flower below.

Part  is the sticky part of the pistil that pollen sticks to.

Is it the anther, ovule, or stigma?

diagram Flower Anatomy image picture

The Flower:
The flower is the reproductive unit of some plants (angiosperms). Parts of the flower include petals, sepals, one or more carpels (the female reproductive organs), and stamens (the male reproductive organs).The Female Reproductive Organs:
The pistil is the collective term for the carpel(s). Each carpel includes an ovary (where the ovules are produced; ovules are the female reproductive cells, the eggs), astyle (a tube on top of the ovary), and a stigma (which receives the pollen during fertilization).
The Male Reproductive Organs:
Stamens are the male reproductive parts of flowers. A stamen consists of an anther (which produces pollen) and a filament. The pollen consists of the male reproductive cells; they fertilize ovules.
Fertilization:
Pollen must fertilize an ovule to produce a viable seed. This process is called pollination, and is often aided by animals like bees, which fly from flower to flower collecting sweet nectar. As they visit flowers, they spread pollen around, depositing it on some stigmas. After a male's pollen grains have landed on the stigma during fertilization, pollen tubes develop within the style, burrowing down to the ovary, where the sperm fertilizes an ovum (an egg cell), in the ovule. After fertilization, the ovule develops into a seed in the ovary.Types of Flowers:
Some flowers (called perfect flowers) have both male and female reproductive organs; some flowers (called imperfect flowers) have only male reproductive organs or only female reproductive organs. Some plants have both male and female flowers, while other have males on one plant and females on another. Complete flowershave stamens, a pistil, petals, and sepals. Incomplete flowers lack one of these parts.

exam of the parts of a plant

I.     Identify the specific role of the following structures.  

1.         pollen tube
2.         hypocotyl
3.         epicotyl
4          endosperm
5.         polar nuclei

II.   In 5 or more steps, discuss/describe the major events in the double fertilization in
Angiosperm plants, including the chromosome numbers in the major structures
involved.  

III.   Identify the structures on the flower diagram below. 

IV.   State the function of each of the structures you identified in number three.   Make sure your letter and name of the structure is associated with your answer. 

V.   Explain the process of alternation of generation in plants.   Include terms like sporophyte generation, gametophyte generation, meiosis, mitosis, zygote,
and the associated chromosome numbers involved (n) or (2n) in your discussion.   

VI.  Correctly complete each of the following statements.  

1. Another name for germination is _______________.

2. The _______________ acts as a visual attractant for insects.

3. The seed of a bean plant is made mostly of the nutrient _______________.

4. The structure which supports the anther is the _______________.

5. The structure known as the "pollen box" containing the pollen of the

   plant is the _______________.

6. The part of the pistil which contains the pollen tube is the

_______________. This is the narrow midsection of the pistil.

7. The entire female reproductive organ in flowering plants is
   called the ______________.

8. The entire male reproductive organ in flowering plants is called
   the _______________.

9. The sperm of flowering plants is contained in the
   _______________  grain.

10. The _______________ of a sprouting seed develops into the lower
    stem and roots.

11. The transfer of pollen between the anther and the stigma in
    any flowering plant or plants is called _______________.

12. Most stored food in a bean seed is contained in
    their ________________.

13. The sticky top of the pistil is called the _______________.

14. The embryonic plant is called a _______________ before germination.

15. The _______________ of a sprouting seed develops into the
    upper stem and leaves.

16. _______________ acts as a chemical attractant for insects and
    small birds.

VII.  List the three factors necessary for the successful
      germination of any seed.

1.

2.        

3.

Multiple Choice Section

1.   Cone bearing plants  (1.) are known as gymnosperms   (2.) are known as angiosperms
       (3.) bear flowers for reproductive success  (4.) depend on an aqueous environment for gamete dispersion
       (5.) are found only in the Northern hemisphere

2.    The cotyledons of angiosperms  (1.) store food in the seed  (2.) form pollen  (3.) mature the pollen
        (4.) become the fruit  (5.) enclose the flower bud

3.     Angiosperms differ from other terrestrial plant groups in that they   (1.) have flowers and fruits
        (2.) have cones  (3.) have needles  (4.) produce spores  (5.) have xylem and phloem

4.      Food storage in seeds occurs in the  (1.) embryo  (2.) coleoptile  (3.) germ  (4.) plumule
         (5.) endosperm

Base your answers to question 5 below on the diagram and your knowledge of biology.

5.   The female gametophyte develops in this structure.   (1.) A   (2.) B   (3.) C   (4.) D
       (5.) 5   (6.) 6

Base your answers to questions 6 and 7 below on the diagram below and your knowledge of biology.



6.         The region labled B refers to the  (1.) epicotyl  (2.) hilium  (3.) radicle  (4.) meristem  (5.) endosperm

7.         The region labeled D represents the  (1.) cotyledon  (2.) hilium  (3.) hypocotyl  (4.) radicle  (5.) seed coat

Base your answers to questions 8 and 9 on the choices below.

(A) gibberellins
(B) cytokinins
(C) ethylene
(D) abscisic acid
(E) auxins

8.         Inhibits leaf abscission and promotes bud and seed dormancy.  (1.) A   (2.) B   (3.) C   (4.) D   (5.) E  

9.         Promotes plant growth and phototropism.   (1.) A   (2.) B   (3.) C   (4.) D   (5.) E

10.       Which of the following gases produces fruit color change and causes fruit to ripen by
            stimulating the conversion of starch into sugar?   (1.) ethylene  (2.) phytochrome  (3.) cytokinin
            (4.) auxin   (5.) gibberellin

11.       Which of the following statements about bryophyta is correct?   (1.) they have true roots and stems
            (2.) they can be small or grow large  (3.) they lack vascular tissue   (4.) the archegonium produces
            flagellated sperm   (5.) the zygote grows into a haploid structure

Base your answer to question 12 on the diagram of the flowering plant below and your knowledge of biology.


12.  This is the pollen producing structure.   (1.) A   (2.) B   (3.) C   (4.) D
       (5.) 5   (6.) 6  (7.) none of these

13.   In the presence of light, the plant hormone, auxin, migrates to  (1.) the dark side of the plant stem
        and causes elongation of these cells.   This results in the plant bending toward the light.
        (2.) the light side of the plant stem and causes elongation of those cells.   This results in the plant
        bending toward the light.    (3.) the dark side of the plant stem and causes elongation of those cells.
        This results in the plant bending away from the light.    (4.) the light side of the plant stem and causes
        elongation of these cells.    This results in the plant bending toward the light.   (5.) the light side of the
        plant stem and causes reduction in the sizes of those cells.    This results in the plant bending toward
        the light.

14.   Which has a dominant gametophyte generation?   (1.) mosses  (2.) diploid spores   (3.) Protists
        (4.) slime mold   (5.) apple trees

15.    The reproductive organ of the angiosperm is the  (1.) seed  (2.) leaf   (3.) stem   (4.) flower  (5.) root

Link to reproduction and development in plants practice test answers

Botany Basics, Parts of a plant leason

Diagram of external plant parts (from OSU Master Gardener Program).

The different plant structures are actually called organs. Each organ is a specific type of tissue that performs a particular function. For today’s blog, I’m only going to focus on the vegetative parts. These include the roots, stems, shoot buds, and leaves. The second group of structures has to do with sexual reproduction. I will save this latter group for part 2, next week.

Interesting note: Even though the vegetative parts are not involved in sexual reproduction, they can be used in asexual reproduction such as cuttings or grafting.

Roots: They have the principal function of the absorption of water and nutrients, and they also act as an anchor for the plant and a support for the stem.

A primary root that has few lateral roots and continues to extend downward is called a taproot. An example of a taproot would be a carrot, a root that we eat as a vegetable. If the primary root stops elongating and many lateral roots develop, the root is referred to as fibrous. An example of a fibrous root structure would be turf grass.

Gardening tip: When transplanting a young plant into the garden or planting a seed, do not put fertilizer in the transplant hole or next to the seed. Instead, place a band of fertilizer 2 inches below and 2 inches to the sides. As the plant begins to grow, the roots will soon reach the needed nutrients for optimal early growth.

Stems: Their function is to be the plant’s plumbing system, carrying water, dissolved nutrients and sugars. Stems also have nodes which are areas of active cellular growth. Nodes are where small buds develop into leaves, stems or flowers.

Here are some very interesting facts about stems. We think of stems as being above ground, but they also grow below ground in the form of rhizomes (bluegrass), tubers (potatoes), corms (gladiolus) or bulbs (daffodils). To be classified as stem tissue, it must have nodes for buds or leaves.

There are also specialized above-ground stems. Stolons are horizontal stems, sometimes called runners (strawberry), crowns are compressed stems and leaves (dandelion), and spurs which are short, little side stems that are fruit bearing (pear, apple, and cherry). A stem that we commonly eat is asparagus.

Buds: They are the location of an undeveloped shoot that will either be a leaf or a flower. Leaf buds tend to be less round and more elongated, and flower buds are the opposite.

Terminal buds are located at the tip of a stem and lateral (axillary) buds are located on the sides of a stem. A terminal bud that we eat is cabbage. A lateral bud that we eat is brussels sprout. Broccoli is an example of a flower bud that is eaten.

Leaves: The main function of a leaf is to absorb sunlight and to produce sugars through the process called photosynthesis. The leaf can be stalkless and attach directly into the stem, or it can be attached with a little stem called a petiole. An example of a leaf that we eat would be lettuce. A petiole that is eaten is rhubarb.

vines for ornamental gardens

This species of plants reach reach between 2 and 10 meters high, which favors our intimacy. They have a woody stem, which are born flexible branches to which we will help you grow in the garden trellises. Its leaves are deciduous deep green color, which will give light to the space.

Flowers are the most valued of these plants, for its brilliance and its varied shades: begin at birth in spring. Depending on the species we plant, we can get from white colors, lilac, yellow, red or orange.

Growth is rapid and require minimum care. Below we list just some of them:



Jasmine: The bloom is very fragrant, I have white and yellow Its price ranges between 6 and 7.50 euros in a pot of 17 cm with a height of 50-70 cm. We highlight the typical Jazmin offcinalis for its beauty and its renowned fragrance.











WISTERIA GLYCINE: The Flowering is in spring, we in purple and white's price is 12 euros and 3.50 euros in plant seeds, it is noteworthy that all wisteria that we sell are grafted so its coming into bloom very early.





                                                                               





Bignonia: Flowering is in summer, we have it in red, orange, and yellow. Its price ranges between 9 and 12 euros and 3.50 euros in plant seeds. This plant is extremely hardy and grateful. From very continuous and abundant flowering.







PASSIFLORA: We have it for sale in various colors and delivers a delicious fruit known as passion fruit. Its price ranges between 9 and 12 euros in plant and from 1.50 to 3.50 euros in seeds.



Climbing roses: In just three years the English roses get this impressively. Its price is around 15 to 22 euros in pots and even in winter also sell bare root and its price does not exceed 14.00 euros. The rose is definitely the star of any garden. They are very rustic plants, very adaptable and planted in full sun will give us years of happiness and pleasure.







The shades in climbing roses are endless, heights and flower shapes are also very numerous, you have many options to choose from, high, very high or extremely high. Single flowering reflorecientes, etc. From simple flower, double flower, full flower, we rose for every space.





LOS ROSALES banksiae: full lutea (yellow) and full alba (white) The price is 15 euros in pots and growing very fast with a spectacular bloom in spring. Palm very flexible and boneless, a very fast growth can cover a large area, ideal if you have enough space. Highly recommended.

 

 

                                                                                

 

 

 

 

 

structure first flowers to open are at the base image picture