Wednesday, September 19, 2012

I'M A SURVIVOR.

Some may say that i'm a terrible mother because only one of my kids survived...but I think i'm a wonderful mother. My babies just couldn't adapt to their environment.

Here are Babu's latest pictures:




So proud of you dear babu pea. 
Love mommy <3

Family Relationships


Monocotyledons
  • It only has one seed leaf.
  • New roots arise from aborted radicles.
  • The first shoot that emerges from monocot plants is  epicotyl, this is where the first leaves and shoots emerge.
  • Monocots have a distinctive arrangement of vascular tissue known as an atactostele in which the vascular tissue is scattered rather than arranged in concentric rings. 


Examples:
corn
wheat
ginger
banana
sugarcane


Dicotyledons

  • They have two seed leaves.
  • Their roots grow from apical meristem  and the radicle.
  • Many dicots have epigeal emergence. This is where the hypocotyl elongates and becomes arched in the soil.
  • In dicots, the hypocotyl  appears to be the base under the spent withered cotyledons, and the shoot just above that is the epicotyl. 
Examples:
figs
celery
beans 
pease

Reproduction

Asexual Reproduction: 

To reproduce asexually, plants use rhizoidsfragmentation, or budding. Strawberries, crab grass, and Bermuda grass are examples of plants that reproduce with rhizoids. The creeping Charlie is an example of a plant that reproduces through fragmentation. The banana is an example of a plant that reproduces through budding.



flower

Sexual Reproduction:

Sexual reproduction in plants involves male and female plant organs. The female structures invovled in sexual reproduction are the stigma, the style and the ovary. The stigma is the sticky portion of the pistil that captures pollen. The style is long and slender and supports the stigma. The ovary is composed of one or moreovules and is responsible for housing the eggs. The male structures involved in sexual reproduction are the filament and the anther. The filament supports the anther which is responsible for storing and producing pollen. Pollination is the transfer of pollen from an anther to a stigma. Wind, water, insects, birds, and small mammals all aid in the pollination of plants. After pollination, one nuclei of the pollen grain forms a tube down through the style to the micropyle of the ovary. The second nuclei travels down the tube and splits into two sperm nuclei that fertilize the egg and combine with polar bodies to form the endosperm (stored fruit). 

Life Cycle

Web Figure 1.3.B


Life cycle of corn (Zea mays), a monocot. The vegetative plant represents the diploid sporophyte generation. Meiosis occurs in the male and female flowers, represented by the tassels and ears, respectively. The haploid microspores (male spores) develop into pollen grains, and the single surviving haploid megaspore (female spore) divides mitotically to form the embryo sac (megagametophyte). The egg forms in the embryo sac. Pollination leads to the formation of a pollen tube containing two sperm cells (the microgametophyte). Finally, double fertilization results in the formation of the diploid zygote, the first stage of the new sporophyte generation, and the triploid endosperm cell.


A bean seed grows quickly into a bean plant. It is one of the fastest growing plants. After the bean is planted in the soil, it takes only a week for it to germinate. The bean plant is fully grown in six weeks. Its seeds drop into the soil or are planted there, and the life cycle begins again.

Food Delivery

Roots help with the delivery of nutrients.



Translocation: Is the transfer of soluble materials through sieve tubes of the phloem of vascular plants.  An example is when a plant produces sucrose it uses translocation to distribute it throughout the plant.

Phloem: It is the food-conducting tissue of plants. Vascular plant tissue consisting of living cells arranged into elongates tubes that transport sugar and other organic nutrients throughout the plant.

Nutrient & Water Delivery


Transpiration/turgor pressure: Turgor Pressure is used to maintain rigid stems by absorbing water and expanding the vacuoles in the cells and pushing against the cell walls to make it rigid
Transpiration is when water vapor is lost from the leaves by opening of the stomata.

Vascular tissue: What allows the plants to move water and food throughout the plant

Xylem: A tissue that is made of dead cells and transport water up from the roots to the leaves by using adhesion.

Stomata/guard cells: Pores with guard cells that can close or open allowing carbon dioxide, water, and oxygen out of the plant.

Soil contributes to plant growth because all of the nutrients are found there and water is transported from there.

Casparian strip: is used to block passive transport of materials to other parts of the plants. 

Growth Explained



Shoot & Root growth: Plants have three types of root systems: taproot, with a main taproot that is larger and grows faster than the branch roots. The fibrous root is where all the roots are the same size. The adventitious roots form on any other plant part other than the roots. 

Meristem: A region of plant tissue consisting of actively dividing cells that forms new tissue. This allows the exchange of carbon dioxide and oxygen. It permits the growth of stems and roots. It transports sugar and water and attracts pollinators to a plant. 

Primary/secondary growth: Primary growth occurs at the apical mersitems where the structure is elongated. Secondary growth is an increase in the thickness of the shoots and roots of a vascular plant as a result of the formation of new cells in the cambium. While primary growth is elongated, secondary growth is increased in width. 

Vascular & cork cambium: The vascular cambium is the cambium present in between the xylem and phloem of a vascual bundle. The cork cambium is the tissue in the stem of a plan that gives rise to cork on its outer surface and a layer of cells containing chlorophyll on its inner surface. The cork cambium develops outside the vascular tissues while the vascular cambium is a remnant of the apical meristem.

Hormones involved: The auxin is a plant hormone that causes the elongation of cells in shoots and is involved in regulating plant growth. It regulates root formation, bud growth, and fruit and leaf drop. The cytokinin is produced by the roots and traveling upward through the xylem. It promotes tissue growth, budding, and on application, retard plan senescence. 

Tropism: My plant exhibited phototropism in which it grew toward the direction of sunlight because it was placed on my bedroom window sill. 


This is said window sill that babu the pea lived...all by himself.