Antonio is concerned that the photosynthesis process is too slow in his plants because the heat in his greenhouse was cut down by accident. What temperature range will photosynthesis work best in?

• 50 - 60 degrees Fahrenheit

• 60 - 70 degrees Fahrenheit

• 65 - 85 degrees Fahrenheit

• 85 - 95 degrees Fahrenheit

The three parts of a seed are:

• root, stem, and flower

• root, seed coat, and endosperm

• an embryo, cotyledon, and new plant

• seed coat, endosperm, and embryo

Sulfur is used to lower soil pH so that the soil will become more:

• acidic

• alkaline

• eroded

• porous

Organic fertilizers made from dried and pulverized manure are:

• balanced sources of plant nutrients

• caustic to plants and can cause injury

• in soluble form and quickly available to plants

• slow-acting and long-lasting

What bacteria were genetically engineered to produce insulin?

• E. Coli

• Salmonella

• Yeast

• Listeria

Which is true of DNA?

• Cannot be duplicated

• Found in all living cells

• Found only in male cells

• Produced only in a test tube

Genes are comprised of:

• mitochondria

• cytoplasm

• endoplasmic reticulum

• DNA

If a soil pH level is 6.0 and needs to be raised to 7.0, what amendment is best incorporated into the soil?

• Sulfur

• Sodium

• Lime

• Magnesium

The primary function of the leaf is to:

• support other plant structures

• produce flowers

• produce fruit

• manufacture food for the plant

The best tool to use when trimming and shaping shrubbery is the:

• chanin saw

• hedge shears

• lopping shears

• pruning shears