6th Grade DCA Study Guide – Unit Review

Cellular respiration releases __________ into the atmosphere.

• carbon dioxide

• oxygen

• nitrogen

• methane

Transpiration helps photosynthesis and respiration by transporting __________ and nutrients from the roots to the leaves.

• water

• carbon dioxide

• oxygen

• glucose

The process in which plants convert sunlight, carbon dioxide, and water into food is called __________.

• photosynthesis

• respiration

• transpiration

• digestion

The equation for photosynthesis is: __________ + carbon dioxide + water → glucose + oxygen.

• sunlight

• soil

• nitrogen

• electricity

The process of breaking down glucose to release energy, carbon dioxide, and water is called __________.

• cellular respiration

• photosynthesis

• fermentation

• digestion

The __________ transports water from the roots to the leaves in vascular plants.

• xylem

• phloem

• epidermis

• cambium

The __________ transports sugars and nutrients from the leaves to the rest of the plant.

• phloem

• xylem

• cambium

• stoma

Nonvascular plants absorb water through __________ instead of roots.

• their tissues

• leaves

• stomata

• rhizoids

The roots of vascular plants help absorb __________ and __________ from the soil.

• water, nutrients

• oxygen, carbon dioxide

• sugar, salt

• air, nutrients

The primary difference between vascular and nonvascular plants is that vascular plants use __________ and __________ to transport water and nutrients.

• xylem, phloem

• xylem, sieve tubes

• phloem, tracheids

• vascular tissues