Formative Practice 15.7 (Form 4 Biology Textbook Exercise and Answer)

Question 1:
Describe how to measure growth in animals.

Animal growth can be measured by measuring changes in size, volume, dry mass or wet mass.

Question 2:
Explain the differences between complete and incomplete metamorphosis.

In complete metamorphosis, organisms undergo four stages of growth that is, egg, larva, pupa and adult. In incomplete metamorphosis, organisms undergo several stages of ecdysis before becoming an adult.

Question 3:
Explain the event that happens during the exponential phase.

• Fastest growth rate.
• Active cellular division and elongation
• Organism’s size increases rapidly

Question 4:
Why must insects go through ecdysis?

Insects need to undergo ecdysis, that is, the shedding of the external skeleton to allow growth and development.

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