Whiteflies are common pest insects found on cotton, tomato, poinsettia, and many other plants. Nymphs are translucent and mostly sessile, feeding on their host plants' phloem (sap) from the undersides of leaves. They undergo incomplete metamorphosis into winged adults. Because whitefly nymphs cannot escape predation by moving, you hypothesize that their translucent bodies make them hard to spot by predators. How could you directly test this hypothesis? Select one: a. Compare rates of predation on whitefly nymphs on plant leaves of different colors (for example, red vs. green poinsettia leaves). b. Compare rates of predation on whitefly nymphs coated with a nontoxic dye vs. undyed whitefly nymphs. c. Compare rates of predation on whitefly nymphs vs. whitefly adults. d. Compare rates of predation on whitefly nymphs by predators that are translucent vs. predators that are not translucent. e. Compare rates of predation on whitefly nymphs feeding on poisonous plants vs. those feeding on nonpoisonous plants.
Answers: 3
Biology, 22.06.2019 00:00
Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating
Answers: 2
Biology, 22.06.2019 05:00
Match each term to its best definition? sedimentary depositional enviornment
Answers: 1
Biology, 22.06.2019 13:00
What is the function of the root cap? a. extra-absorbent cells in the root cap absorb more water and nutrients b. protect the meristematic area of the stem c. contains sensors for sunlight d. increases surface area of the root
Answers: 1
Whiteflies are common pest insects found on cotton, tomato, poinsettia, and many other plants. Nymph...
Mathematics, 18.12.2020 07:50
Health, 18.12.2020 07:50
Mathematics, 18.12.2020 07:50
Mathematics, 18.12.2020 07:50
Mathematics, 18.12.2020 07:50
Mathematics, 18.12.2020 07:50
History, 18.12.2020 07:50
Biology, 18.12.2020 07:50
Computers and Technology, 18.12.2020 07:50
Mathematics, 18.12.2020 07:50
Social Studies, 18.12.2020 07:50