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PLANT GROWTH MEASUREMENT

Biology

Biology

PLANT GROWTH MEASUREMENT

Requirements

Small plots/boxes, meter rule and seeds of beans (or green grams, peas, maize),

 

Procedure

  1. Place some soil in the box or prepare a small plot outside the laboratory.
  2. Plant some seeds in the box and place it in a suitable place outside the laboratory (or plant the seeds in your plot).
  3. Water the seeds daily.
  4. Observe the box/plot daily and note the day the seedlings emerge out of the soil.
  5. .Measure the height of the shoot from the soil level up to the tip of the shoot.
  6. Repeat this with four other seedlings. Work out the average height of the shoots for this day.
  7. Repeat procedure 5 every three days for at least three weeks.
  8. Record the results in a table form.
  9. On the same seedlings measure the length of one leaf from each of the five seedlings (from leaf apex to its attachment on the stem).
  10. Calculate the average length of the leaves and record in the table.
  11. Plot a graph of the height of the shoot against time. On the same axes plot length of leaf against time.
  12. Compare the two graphs drawn.

 

Growth and Development In Plants

The main growth and development phase in plants begins with the germination of the mature seed. Seeds are of two kinds depending on the number of cotyledons or embryo leaves.

 

Practical Activity

Requirements

Procedure

Account for the difference in distribution of the colouration with iodine in the two specimens.

 

EVALUATION

  1. How do you calculate the fresh weight of a plant?
  2. What is fresh weight and dry weight in plants?
  3. How do you find the dry weight of a plant?
  4. How do you measure plant growth?
  5. How do you calculate leaf weight?
  6. How much do plants weigh?
  7. What is the weight of a leaf?
  8. How is leaf area ratio calculated?
  9. How do you measure the diameter of a plant?
  10. How do we calculate growth rate?

 

See also

GROWTH AND DEVELOPMENT

FERTILIZATION IN ANIMALS

REPRODUCTION IN ANIMALS

METHODS OF FRUIT AND SEED DISPERSAL

POLLINATION

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