New Life Unit Process

Osamah Hindi 7B

Intro to the UnitToday was our first day learning about the unit. We talked about the significant concept and discussed what the unit was about. We then went outside to view plants that didn’t need flowering to reproduce. We created groups of 3 and set off to find plants that didn’t need flowering to reproduce, we then returned and watched a brainpop video.

Asexual ReproductionAsexual Reproduction: Reproducing without sex.Some plants:

Strawberry(stem extends and the children plants are living on it)Aspen and Poplar trees do the same.

Another way is when farmers take a cutting from a plant and replant it.

Asexual ReproductionThe children plants are exactly the same genetically since the parents genes split in 2.Bacteria reproduce using binary fissionBudding: the children lives as a growth on the parent, finally coming off, such as potatoes and yeast.Sometimes, if the parents are cut in half well enough, they can regenerate into 2 organisms.

Asexual ReproductionWith bread mold, the mold makes a root-like structure that takes nutrients needed to create spores. The spores then explode out, all over the bread, and each of the many spores becomes one separate organism. Amoeba does not have genders, and reproduces by splitting in 2.

Asexual ReproductionHydra is a fresh water animal made of many cells. Like potatoes, it grows buds and separates. Yeast divides to make new cells too.Plants like saxifrage also make many little plantlets that detach and make new plants.

FlowersFlowers are unisex and bisexual. Stamen is the male part of the flower. Whilst the pistil is the female part.Pistil: Stigma, style, ovary. Stamen: Anther and Filamen

Pollination & GerminationPollination occurs when Pollen falls into the Stigma, down the style and then mixes with an ovule which then becomes a seed.Germination is when the plant begins to grow and emerges from the seed. The conditions needed is strong fertile soil to help it grow. It also needs a fair amount of water.

SeedsGymnosperms and Angiosperms, are the two main types of seed plants.Gymnosperms: Vascular and do not produce flowers or fruit. Vascular means it is full of many tiny vessels that move the water and food through the stems and roots and leaves.Though most plants are angiosperms.

SeedsAngiosperms:

Dicots: Seeds that can easily split in to two and have 2 leaf in the seed. (right)Monocots: Seeds that can not split in to two and only have one leaf inside them. (left)

Monocot vs. Dicot Germination

Seed DispersalSeeds have hundreds of seeds yet only some survive, which is why there are so many ways of dispersion:Wind: takes the seeds to a new locationWater: Survives through water and washes up at a new locationAnimals: Shaking plants or the seeds getting stuck on themHumans: Replanting seedsExplosion: The top exploding and releasing seeds everywhere

Bibliographyhttp://www.youtube.com/watch?v=489CSop00sYhttp://www.biologycorner.com/resources/mono_di_germination.gifhttp://www2.estrellamountain.edu/faculty/farabee/biobk/planthabit.gifhttp://www.enchantedlearning.com/subjects/plants/gifs/Floweranatomy_bw.GIF