Plants

Little brown seeds so small and round Are you sleeping quietly underground? Down came the raindrops Sprinkle, sprinkle, sprinkle. Out comes the rainbow Twinkle, twinkle, twinkle. Little brown seeds way down below Up through the earth they Grow, grow, grow. Little green leaves come one by one. They hold up their heads And look at the sun.

Plants … • Plants are alive, just like people and animals. How do we know this? Living things all do certain things: • They grow and die. • They need energy, nutrients, air, and water. • They produce young. • They are made up of cells. • They react to what's around them.  

Plants… vPlants are alive, just like people and animals. How do we know this? Living things all do certain things: vThey grow and die. vThey need energy, nutrients, air, and water. vThey produce young. vThey are made up of cells.

Parts of a plant

Parts of a plant.. • Roots • Roots 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.

Parts of a plant… • There are two main types of roots systems. üTap root system. üFibrous root system.

Root systems…

Root systems….

Tap root system… vthe first root produced from a seed is called a radicle. v Radicle becomes the tap root. vSmall branches grow from it.

Fibrous root system… vRadicle is Short lived, replaced by many roots of equal size. vThese roots are adventitious, means they can grow from plant organs other than roots.

Stem… • Stems • Stems 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.

… • 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.

Leaves… • Most 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.

Flowers… • Flowers help pollination by attracting insects. • Flowers contain pollen and tiny eggs called ovules. • After pollination of the flower and fertilization of the ovule, the ovule develops into a fruit.

Pollination…

Seeds… • Seeds contain new plants. • Seeds form in fruit. • Seeds grow and it is germination.

Germination…

• First the young root appears. • The skin splits and the shoot straightens, pulling the cotyledons with it. • The main root gets bigger and grows side roots, and the first leaves

Plants and Life on Earth

Plants and Life on Earth • Plants make food • Plants make oxygen • Plants provide habitats for animals • Plants help make and preserve soil • Plants provide useful products for people • Plants beautify

Roots… • Carrots • Potatoes • Turnips

Seeds… • • • •

Lima beans Peas Green peas Sunflower seeds

Fruits… • • • •

Tomato Watermelon Apple Oranges

Flowers… • Broccoli • Cauliflower • Blossoms

Leaves… • Lettuce • Spinach • Cabbage

Stems… • Celery

Know plants know life No plants No life Grade 4, Plants/ Second

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