Nutrition: Plants

Which useful energy transfer or conversion happens overall in photosynthesis?

• Light → chemical

• Chemical → light

• Light → heat

• Chemical → heat

Which tissue transports water and minerals from the root to the leaves?

• Phloem

• Veins

• Xylem

• Stomata

Why do leaves have a waxy cuticle?

• To protect the leaf without blocking out light

• To allow water vapour to diffuse out of the leaf

• To keep oxygen in the leaf

• To make the leaf shiny and pretty

Which tissue in the leaf is adapted for efficient gas exchange?

• Upper epidermis

• Palisade mesophyll

• Spongy mesophyll

• Vascular bundle

Which tissue in the leaf absorbs the most light for photosynthesis?

• Upper epidermis

• Palisade mesophyll

• Spongy mesophyll

• Vascular bundle

In a greenhouse, tomato plants grow faster if the temperature is increased. What does this show?

• Carbon dioxide concentration must be a limiting factor

• Light intensity must be a limiting factor

• Temperature must be a limiting factor

• Water availability must be a limiting factor

Why do plants need Magnesium ions?

• To regulate the opening and closing of the stomata

• For denitrification as part of the nitrogen cycle

• To make chlorophyll molecules

• For making amino acids

Which of these is the correctly balanced equation for photosynthesis?

• C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O

• 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

• C₆H₁₂O₆ + 6CO₂ → 6O₂ + 6H₂O

• CO₂ + H₂O → CH₂O + O₂

State the name of structure A

• Vascular bundle

• Upper epidermis

• Palisade mesophyll

• Spongy mesophyll

Tags

NGSS.MS-LS1-2

The arrows in the diagram all point to the

• Cytoplasm

• Nucleus

• Mitochondria

• Chloroplast