2020-2029 Governor's Cup - SC - Topic 2

These plants undergo carbon fixation to form oxaloacetate, which is then converted to malate or some other organic acid, which is stored in the central vacuole overnight. What type of plant, such as cacti, only open their stomata at night?

• C3 plants

• CAM plants

• RuBP plants

• C4 plants

These broad, compound leaves develop from an immature fiddlehead. What is the “leaf” of a typical fern, as shown to the right?

• rhizome

• pinna

• stipe

• frond

Tags

NGSS.MS-LS4-2

This enzyme requires the presence of a magnesium ion at its active site before it can catalyze the transition of ribulose 1, 5-bisphosphate into 3-phosphoglycerate. What is probably the most abundant enzyme on Earth?

• aldolase

• ATPase

• alcohol dehydrogenase

• rubisco

Tags

NGSS.HS-LS2-5

These plant hormones induce stem elongation, seed germination, flowering, and leaf senescence. What is this class of tetracyclic acids?

• auxins

• gibberellins

• cytokinins

• ethylenes

The vast majority of flowering plants possess both male and female reproductive structures located on the same plant. What term refers to this phenomenon?

• diclinous

• dioecious

• androecious

• monoecious

This compound is considered to be the prime end-product of photosynthesis, because it can be the raw material to produce monosaccharides such as glucose and fructose. It is also an intermediate product of glycolysis after the oxidation of a certain compound. What is the compound shown to the right?

• ribulose bisphosphate

• phosphoenolpyruvate

• glyceraldehyde 3-phosphate

• 3-phosphoglycerate

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Cyclic electron flow during photosynthesis occurs in higher plants to balance the ATP/NADPH energy budget. Which of the following occurs during cyclic electron flow of photosynthesis?

• Plastocyanin receives electrons from a cytochrome complex.

• ATP is produced through photophosphorylation.

• P680 is reduced by the products of the photolysis of water.

• G3P is formed.

Stacks of these are found within the chloroplasts. What highly folded membrane is the site of the light-dependent reactions of photosynthesis?

• thylakoid

• sclerenchyma

• crista

• parenchyma

Tags

NGSS.HS-LS1-5

This phylum is characterized by the presence of seeds and fruits. To what phylum do flowering plants belong?

• Dicotyledonae

• Magnoliophyta

• Bryophyta

• Gymnospermae

These tropical and subtropical seed-bearing plants tend to have woody trunks, evergreen leaves, and cones. What are these gymnosperms that can be seen in the image shown?

• ginkgo

• conifers

• palms

• cycads