PCA – Nematodes Test Questions With Reviewed Correct Answers Pass!!
PCA – Nematodes Test Questions With Reviewed Correct Answers Pass!! Describe the relative size of plant feeding nematodes. - ANSWER : Great variability. Range from 0.25 um to 12 mm in length. Name five to six life stages of plant-parasitic nematodes. - ANSWER : Egg, juvenile 1, J2, J3, J4, adult Shape and size of root-knot nematode - ANSWER : Females are round and lose their veriform shape as adults, males retain veriform shape Shape and size of cyst nematode - ANSWER : Adult female is swollen, eggs retained inside of cyst and cyst is left behind after female dies Shape and size of lesion nematode - ANSWER : Small, needle-like Describe how nematode shape affects the choice of extraction method. - ANSWER : Larger nematodes that are swollen may be observed on the root system, but smaller nematodes require actual extraction. Define veriform. - ANSWER : Worm-shaped Describe the major difference between the veriform stage and other nematode life stages. - ANSWER : Veriform stages are mobile, swollen stages are not. Describe the feeding apparatus of plant-parasitic nematodes and how it is used to feed on plants. - ANSWER : Stylet is used to feed. It pierces the plant, and draws nutrients from the plant.
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pca nematodes test questions with reviewed corre