Match the following columns

Column-I (Nematodes)	Column-II (Crops)
a. Paddy gall fly	1. Citrus nematode
b. Tylenchulus semipenetrans	2. Cereal root nematode
c. Heterodera avenae	3. Root knot of tamato
d. Heterodera tabacum	4. Tobacco cyst nematode

Solution(By Examveda Team)

a. Paddy gall fly - Root knot of tomato.
Root-knot nematodes are minute, worm-like animals that are very common in soil. They have a wide host range and cause problems in many annual and perennial crops. Tomatoes are among the most seriously affected, with the nematodes causing problems in all growing areas.
b. Tylenchulus semipenetrans - Citrus nematode.
Tylenchulus semipenetrans, also known as the citrus nematode or citrus root nematode, is a species of plant pathogenic nematodes and the causal agent of the slow decline of citrus. T. semipenetrans is found in most citrus production areas and diverse soil textures worldwide.
c. Heterodera avenae - Cereal root nematode.
Heterodera avenae, the cereal cyst nematode or European cyst nematode, is a plant pathogen and an obligate parasite of cereal crops including barley, oats, wheat and rye. Cereal crops infected with this nematode are more susceptible to infection by fungal diseases such as rhizoctonia root rot.
d. Heterodera tabacum - Tobacco cyst nematode.
Heterodera tabacum is synonym of Globodera tabacum. It is commonly known as a tobacco cyst nematode, a plant-parasitic nematode that mainly infests the tobacco plant, but also plants in family Solanaceae.