Science Vocabulary 14

Front

Midrib

Back

The large, thick vein running through the center of a leaf. Example: The midrib provides support and transports water in the leaf.

Front

Palisade mesophyll

Back

The upper layer of cells in a leaf that contains lots of chloroplasts for photosynthesis. Example: The palisade mesophyll absorbs sunlight for photosynthesis.

Front

Petiole

Back

The thin part of a leaf that connects it to the stem; also called the leaf stalk. Example: The petiole allows the leaf to bend and catch sunlight.

Front

Photo-

Back

A prefix meaning 'related to light.' Example: Photosensitive plants react to changes in light.

Front

Photosynthesis

Back

The process in which plants make their own food by using carbon dioxide, water, and sunlight. Example: Green plants release oxygen during photosynthesis.

Front

Precipitate

Back

A solid that separates from a liquid during a chemical reaction. Example: A white precipitate formed when the two solutions were mixed.

Front

Root

Back

The part of a plant that grows underground and absorbs water and nutrients. Example: Olive trees have deep roots that help them survive droughts.

Front

Seedling

Back

A young plant that has just sprouted from a seed. Example: The bean seedlings grew into healthy plants.

Front

Seed

Back

A small structure from which a new plant grows. It contains the plant embryo and food. Example: Farmers plant seeds to grow crops.

Front

Starch

Back

A type of carbohydrate made of glucose, stored in plants like potatoes and rice. Example: Plants convert excess glucose into starch for storage.