Question

27. Two species of yeast persist indefinitely when each species is grown on agar in separate petri dishes in the lab. However, when the species are grown together on agar in the same petri dish, only a single species remains after a few days. What is the most likely explanation for the elimination of one of the species? a) Competition between the two yeast species resulted in a change in the way the two species used the limited resource (agar). b) Competition for a limited resource (agar) resulted in the two species diverging in behavior or morphology. c) Competition for a limited resource (agar) resulted in the local extinction of the inferior competitor. d) A shared predator affected the outcome of competition between the yeast species. e) A predator-prey interaction where the predator yeast ate the prey yeast species. 28. Which of the following is an example of diffuse coevolution? a) Yucca plants are pollinated by a group of moths called yucca moths. b) of the many bat species, only a small number have become pollinators of flowers. c) Both bees and butterflies pollinate flowers of the same species. d) Ants steal nectar that is intended for pollinators but do not pollinate flowers e) Dandelions, goldenrod, and hawkweeds all have inflorescences of yellow, short-tubed, nectar-rich flowers pollinated by butterflies.

Answer 1

Ans-.27_ b

Bcz the  sugar is mainly responsible for growth of yeast

Ans-.28_e may be

Bcz diffuse coevolution occurs when a group of species interact or competition other group of species not a single species..exp _ predator pray system