A plant is a(an)

• unicellular prokaryote.

• multicellular prokaryote.

• unicellular eukaryote.

• multicellular eukaryote.

Tags

NGSS.MS-LS1-1

One of the main functions of stems is to

• carry out photosynthesis.

• transport substances between roots and leaves.

• store carbohydrates.

• store water.

Which one of the following statements is true?

• The tissues in a monocot stem are different from those in a dicot stem.

• Xylem and phloem cells of monocots are arranged in a cylinder.

• The vascular bundles of monocot and dicot stems are continuous from the root’s vascular cylinder.

• The pith and cortex of dicot stems consist of meristematic cells.

Oxygen and carbon dioxide diffuse in and out of a leaf through the

• palisade mesophyll.

• guard cells.

• phloem.

• stomata.

Through which plant cells does water move by capillary action?

• phloem cells

• guard cells

• mesophyll cells

• xylem cells

Corn, sugar beets, cauliflower, and cabbage were all developed by

• selective breeding.

• pollination.

• germination.

• plant propagation.

Tags

NGSS.HS-LS4-4

Which of the following statements about crop plants is NOT true?

• Crop plants have been improved through selective breeding.

• In many crop plants, the endosperm is our primary food source.

• Yields of crop plants in North America have decreased over time.

• Most cropland in the United States is used to grow only a few different crop plants.

The regions of tissue in a plant that produce cells that later become specialized tissues are the

• roots.

• stems.

• leaves.

• meristems.

Tags

NGSS.HS-LS1-4

Plants can respond to changing environmental conditions by the use of which chemicals?

• sugars

• hormones

• enzymes

• pigments

Tags

NGSS.HS-LS2-6

Which of the following best describes plant hormones?

• growth regulators and chemical messengers

• enzymes, growth regulators, and chemical messengers

• growth regulators only

• chemical messengers only