Science Review

During __________, plants combine water and carbon dioxide into compounds called sugars.

• Respiration

• Photosynthesis

• Transpiration

• Osmosis

The plant stores __________ in its tissues and breaks them down when it needs energy.

• proteins

• sugars

• minerals

• oxygen

Photosynthesis takes place in organelles called __________.

• mitochondria

• vacuoles

• chloroplasts

• nuclei

Stacked membranes that contain pigment inside chloroplasts are called __________.

• stomata

• thylakoids

• xylem

• phloem

Plant parts that contain large amounts of __________ look green.

• chlorophyll

• starch

• protein

• glucose

Scientists group leaves by the structure of the __________.

• chloroplasts

• stem

• veins

• roots

Small openings in the epidermis that allow oxygen and carbon dioxide to enter or leave the cells are called __________.

• stomata

• guard cells

• thylakoids

• vacuoles

During photosynthesis, the plant keeps hydrogen molecules and releases __________ molecules.

When people burn fossil fuels, the carbon is released as __________.

Which forces cause upward movement in a plant?