Second Grade NGSS
Plants, Growth, Pollination

 

  Planting flowers in Science Garden

OBJECTIVES:
  • Planting pollinator plants
  • Learning about habitat requirements for pollinators.
 VOCABULARY
·         Host plants
·        
pollinators    

MATERIALS:
·        
Flowering plant
·        
Gloves
·        
Hand shovel

BACKGROUND

An environment refers to the surroundings of an area.  Environments are different from place to place, and change with time.  Within environments you have different parameters that allow ecosystems to maintain themselves.  In order to restore or to make an environment friendly again to native species, environmentalists need to understand the entire ecosystem

Although the media talks about chemicals being harmful to our environment they fail to point out that chemicals make-up everything.  There are good and bad chemicals depending on how specific organisms react to them.  What is good for one species might be harmful to other species.  Chemicals can "control" an environment, and can also influence organisms that live in that specific environment.

Major land and aquatic ecosystems require the following components in order to be maintained.

1.    Sunlight - the ultimate source of energy for primary producers, controls a photochemical process

2.    Inorganic substances - carbon, nitrogen, oxygen, minerals, and water

3.    Organic compounds - fats, proteins, carbohydrates

4.    Climate or weather - wind, water currents, temperature, rain, snow, and humidity

5.    Producers - autotrophic organisms for most part green plants, that capture sunlight, convert energy into organic nutrients, and release oxygen

6.    Macroconsumers - heterotrophic organisms, animals for the most part that eat other organisms or organic matter

7.    Microconsumers - decomposer organisms, largely bacteria and fungi that break down the  organic components of dead organisms


The life cycle of a plant varies depending on the individual species. There are, however, certain requirements for life that most plants need. The growth of a plant is dependent upon light, water, oxygen, carbon dioxide, minerals in the soil, temperature and microbes in the soil. Light, water, and carbon dioxide are needed for photosynthesis which produces food for the plant. Oxygen is needed when it is dark, because the plant then needs oxygen to maintain itself. The correct temperature, soil, and minerals are all needed when the plant first germinates and subsequently grows. Soil helps bind the roots so the plant can anchor itself. Microbes in the soil include a number that are beneficial to plants. Microbial activity helps bring about the decay of organic material (dead plant material and animals) necessary for the production of soil. Temperature or light intensity varies for each type of plant, and this helps explain global plant distribution; light intensity or temperature also effects the rate of photosynthesis in plants; the time at which a plant flowers and the rate at which water loss occurs in a plant (transpiration.)

When these requirements are static for a seed, it will begin to grow or germinate. Sufficient food and minerals are stored in almost all seeds, so that these factors do not limit germination. As water is absorbed by a seed, the inner tissue swells more rapidly than the seed coat. The penetration of water allows the tissues to become hydrated and enzyme activity increases. The food that is stored in the cotyledons or the endosperms are now digested and used.

PROCEDURE:

1.    Seeds that were grown in a previous lesson should be ready to plant.

2.    Have the students discuss how to maintain the ‘butterfly garden.”

3.    Have them weed and mulch.  Use compost from 4th grade class experiment. 

4.    Students by now should have made their conclusion of whether fertilizer enhances the growth of the flowers… So you might want to fertilize some of the plants that are blooming.

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