5 Plant Nutrition

Question 1

Define photosynthesis

Answer 1

the process by which plants manufacture carbohydrates from raw materials using energy from light

Question 2

Word and balanced symbol equation for photosythesis,
in the presence of light and chlorophyll

Answer 2

carbon dioxide + water → glucose + oxygen
CO₂ + H₂O → C₆H₁₂O₆ + O₂

Question 3

Chlorophyll transfers _____ energy into ________ energy in molecules, for the synthesis of _____________

Answer 3

light, chemical, carbohydrates

Question 4

Be able to identify chloroplasts, cuticle, guard cells and stomata, upper and lower epidermis, palisade mesophyll, spongy mesophyll, vascular bundles, xylem and phloem in leaves of a dicotyledonous plant

Question 5

Significance of features of a leaf

Answer 5

palisade mesophyll and distribution of chloroplasts – photosynthesis
stomata, spongy mesophyll cells and guard cells – gas exchange
xylem for transport and support
phloem for transport

Question 6

Nitrate ions important for …

Answer 6

making amino acids

Question 7

Magnesium ions important for …

Answer 7

making chlorophyll

Question 8

Effects of nitrate ion deficiency on plant growth

Question 9

Effects of magnesium deficiency on plant growth