Science Grade 6 - Plants [Beta Access]

cuticle

covering the stems, leaves, and flowers of a plant

cellulose

what cell walls contain, a chemical compound that plants make out of sugar

stomata

small openings in a leaves epidermis

guard cells

something a stoma is surrounded surrounded by, opens and closes it

xylem

a tissue made up of hollow, tubular cells that are stacked one on top of the other to form a structure called a vessel

pholem

a tissue made up of tubular cells that are stacked to form structures called tubes

cambium

a tissue that produces most of the new xylem and pholem cells.

Plants are made up of ______ cells and vary greatly in size and shape.

eukaryotic

Plants usually have some form of _____, _______, and ________.

leaves stems roots

As plants evolved from aquatic to land ________, changes occurred in how they ________, supported themselves, and moved substances from one part of the plant to the other.

environments reproduced

The plant kingdom is classified into groups called ______.

divisions

_______ plants contain nonvascular and vascular types.

Seedless

Most seedless ____ plants have no true leaves, stems, or roots. Reproduction is usually by ______.

nonvascular spores

Seedless _____ plants have vascular tissues that move substances throughout the plant. These plants may reproduce by ______.

vascular spores

Many ancient forms of these plants underwent a process that resulted in the formation of _____.

coal

_____ plants are adapted to survive in nearly every environment on Earth.

Seed

Seed plants produce seeds and have _____ tissue, stems, roots, and leaves.

vascular

The two major groups of seed plants are _____ and _____.

...

life cycle

a pattern of growing and changing

germinate

to grow, usually a seed or spore, using food, water, and warmth

seedling

sprouts of a baby plant that begin to sprout out of the seed

maturity

when a plant reaches full growth

photosynthesis

the process in which plants create their own food

Plants use _____ to make food.

energy

chlorophyll

a special structure deep in a plant's cells that traps the sun's energy inside the plant's leaves

Plants breathe ______ _______.

carbon dioxide

Some important plants to a plant are ____, _____, and ______.

nitrogen potassium and phosphorous

flowering plant

plants that have flowers that allow them to reproduce

nonflowering plant

plants that do not use flowers to reproduce

vascular plant

has stems and veins that transport the plant's food and water

nonvascular plant

plants that do not have roots, stems, or leaves

monocots

flowering plants that have one seed leaf

dicots

flowering plants that have two seed leaves

gymnosperms

plants that leave their seeds out in the open

conifers

plants that hide their seeds in layers of protection

reproduce

creating offspring (baby plants)

adapted

changing to meet the particular needs of an environment

roots

the foundation of a plant which collects water

stem

holds the plant up and stores water and nutrients and transfers them to other parts of the plant

trunk

the stem of a tree, thicker to support the giant tree.

flexibility

how much a plant can bend

leaves

make food for the plant using photosynthesis

animals

help reproduce plants by carrying seeds

wind

takes pollen to reproduce plants