All of the following are beneficial to human, except:
Correct answer: C. Locust
- A. Honey bee
- B. Silk worm
- C. Locust
- D. Insects for pollination
Explanation
Among the insects listed, locusts are not beneficial to humans. Locusts are notorious for forming large swarms that can devastate crops and vegetation. When they appear in massive numbers, they consume almost all the green plants in their path, causing severe economic losses and threatening food security. Therefore, they are considered harmful rather than beneficial.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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