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The leatherjacket and the wireworm are the larval stages of two important crop pests - Leaving Cert Agricultural Science - Question a) - 2016
Question a)
The leatherjacket and the wireworm are the larval stages of two important crop pests. (i) Name the adult stages of 1. the leatherjacket, 2. the wireworm. (ii) Desc... show full transcript
Worked Solution & Example Answer:The leatherjacket and the wireworm are the larval stages of two important crop pests - Leaving Cert Agricultural Science - Question a) - 2016
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Describe the damage caused by each of these pests
Answer
The leatherjacket primarily damages crops by feeding on underground stems and at the soil level, which can lead to plant wilting or death. The wireworm feeds on the base of stems, seeds, tubers, and roots, potentially causing severe damage to young plants and affecting crop yields.
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Describe three structural features of members of this phylum
Answer
Members of the phylum Arthropoda typically exhibit the following features:
- Jointed limbs, which allow for a variety of movements.
- An exoskeleton made of chitin, providing protection and structural support.
- Segmented bodies, which facilitate specialization of body regions and functions.
Step 6
Distinguish fully between complete and incomplete metamorphosis
Answer
In complete metamorphosis, insects undergo four distinct stages: egg, larva, pupa, and adult, where the larva and adult are morphologically different. In contrast, incomplete metamorphosis involves three stages: egg, nymph, and adult, where the nymph resembles a smaller version of the adult and undergoes gradual development without a pupa stage.