Questions and Answers
The adults and larvae of these insects bore holes into stems, shoots, young seedlings, flowers, fruit, and ______.
seeds
Boring insects cause damage to cereals, beans, groundnut, and ______.
yam tubers
Prickly pears (Opuntia spp.) are decorative ornamental plants but can become ______ when occurring in large numbers.
pests
In 1925, prickly pears in Queensland, Australia occupied about ______ million ha.
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To control prickly pears, a phytophagous moth called ______ was introduced from South America.
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Study Notes
Boring Insects
- Adults and larvae create holes in various plant parts including stems, shoots, seedlings, flowers, fruit, and seeds.
- Notable types include fruit borers, stem borers, maize weevils, rice weevils, grain borers, and bean beetles.
- Significant damages caused to crops such as cereals, beans, groundnuts, Bambara groundnuts, yam tubers, dried cassava, plantains, sugarcane, kola, garden eggs, cabbage, and okra.
Prickly Pears (Opuntia spp.)
- Considered decorative ornamental plants but become problematic when proliferating across large areas, transforming into invasive weeds.
- In 1925, Prickly pears infested about 24 million hectares in Queensland, Australia, prompting severe control measures.
- Biological control was implemented through the introduction of the phytophagous moth, Cactoblastis cactorum, from South America to manage the infestation.
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Description
Explore the impact of boring insects on various crops and gain insights into different types such as fruit borers and maize weevils. Additionally, learn about prickly pears and their decorative uses. This quiz will deepen your understanding of agricultural pests and ornamental plants.
