a leafy branch of a fern

• frond

• cotyledon

• resin

• phloem

• xylem

Mrs. Abbott enjoys having different flowers in her yard each year. She should choose flowers, plants that live for only one growing season.

• annual
• biennial

• centennial

• perennial

Choose two answers that tell the jobs of a stem. Select all that apply.

• provides support shades

• roots

• transports water, food, and nutrients

Tags

NGSS.4-LS1-1

What protects a broken pine branch from disease and insects?

• amber

• rhizoid

• resin

• rhizome

Choose two answers that state things learned from looking at tree rings. Select all that apply.

• age of tree

• health of tree

• height of tree

Tags

NGSS.MS-LS2-1

When plants are classified by how they transport water, scientists group them as ___

• monocots or dicots

• seedless or seed-bearing

• vascular or nonvascular

• angiosperms or gymnosperms

Atoms share electrons in a(n) ___.

• element

• salt

• ionic bond

• covalent bond

Which part of the atom has a positive charge?

• protons

• electrons

• neutrons

What is the tiniest recognizable part of an element called?

• atom

• electrons

• neutrons

• nucleus

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which part of the atom has a negative charge?

• protons

• electrons

• neutrons