Plants and Trees
Plant processes
Invertebrates and cells
Arachnids and Arthropods
Earth Science
100

This tree is the source of maple syrup.

Maple tree

100

The chemical process by which plants make their own food.

Photosynthesis.

100

A mollusk with a muscular foot used to glide on slime.

Gastropod

100

An arachnid with a long tail and poisonous stinger.

Scorpion

100

A process that causes rocks to break down into smaller pieces.

Weathering

200

One main root that goes deep into the ground.

Taproot.

200

The transfer of pollen from stamen to pistil.

Pollination

200

The jellylike fluid that fills most of the cell.

Cytoplasm

200

A blood-feeding arachnid.

Tick

200

An enormous wave caused by an earthquake.

Tsunami

300

The largest of all trees, found on the western slopes of the Sierra Nevada.

Sequoias and Redwood Trees

300

When a sperm cell unites with an egg cell.

Fertililzation

300

The part of the cell that directs all activities.

Nucleus

300

A poisonous spider with a red hourglass marking.

Black widow

300

A zone where most of Earth’s faults are located.

Seismic belts

400

A type of plant that lives for many years.

Perennial

400

The green pigment needed for photosynthesis.

Chlorophyll.

400

The growing back of a lost body part.

Regeneration

400

A combined head and thorax

Cephalothorax
400

The break at the boundary between two moving plates.

Fault

500

The part of a tree trunk where growth takes place.

Cambium layer.

500

A plant with sticky “dewdrops” that trap insects.

Sundew

500

A tough material that makes up arthropod exoskeletons.

Chitin

500

The largest tarantula.

Goliath Bird-eater

500

The strength or measurement of an earthquake.

Magnitude