6,000 100 Cicada density 4,500 -60 3,000 Percentage killed by predators 1.500- 1

Question

6,000 100 Cicada density 4,500 -60 3,000 Percentage killed by predators 1.500- 15 May 30 15 June 29 -10. The graph above shows results of a study of emergence and predation on periodical cicadas (the cicadas being food). According to this graph cicadas emerging in early May and late June had the best chance of avoiding being eaten the probability of being eaten was lowest for cicadas emerging between May 15 and May 20 the last cicadas to emerge produced the most babies when there were 1500 cicadas per 1000 m, the probability of being eaten was 60% a. b. c. d. 11. In an exploitative interaction between two species a. One species benefits and the other is harmed b. One species is harmed and the other is unaffected c. Both species benefit d. Both species are harmed 12. Fig wasp of the family Agaonidac lay their eggs inside the "syaconium", a sort of flower structure unique to fig trees. When they do that. The baby wasps get a place to develop, and the fig tree gets pollinated, so it can produce yummy figs. This is an example of a. Allelopathy b. Predation c. Mutualism d. Disease

Explanation / Answer

10. As per the graph the Cicada emerging in the early May and Late June had the best chance of avoiding being eaten. Hence option "A" is correct.

11. In Exploitation competition an organisms indirectly compete with other organisms for resources by exploiting resources to limit the resources availability to other organisms. Hence one species benefits and the other is harmed therefore option "A" is correct.

12. Both the plant and the wasp is getting benefit out of the laying of the egg and hence it is a mutualism. Hence option "C" is correct.

13. Predator and prey both impose selective pressure on each other, natural selection can cause an individual to become stronger and faster in order for his or her survival therefore "A" and "C" is correct.

14. An organism which eats a herbivore is a secondary consumer and hence option "C" is correct.

15. Decomposers are small nicroscopic size and thus eats smaller food particle which eats dead organic matter like detritivores do except detritivores are larger in size and hence option "A" is correct.

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