The name of cereal cyst nematode is……

✅Explanation:
Heterodera avenae is the scientific name for the cereal cyst nematode (CCN), a significant pest affecting cereal crops like wheat, barley, and oats. CCN are sedentary endoparasites, meaning they establish themselves inside the plant roots, leading to stunted growth, yellowing, and yield reduction.

📌Other Options Explanations:
(a) Anguina tritici: This nematode is responsible for causing ear cockle disease in wheat.
(c) Tylenchulus spp.: This genus includes citrus nematodes, which primarily affect citrus trees.
(d) Meloidogyne spp.: These are root-knot nematodes, another group of plant-parasitic nematodes known for causing galls on the roots of various crops.