Plant Pathology Quiz | Agriculture MCQ Practice for IBPS AFO 2026

1

The most striking symptom of false smut of rice (Claviceps oryzae-sativae) is/a

Sometimes the size of kernel are more than twice the diameter of normal grain

All of these

None of These

The colour of kernels finally change to greenish black

Transformation of individual kernels into large, velvety, green balls.

Solution & Explanation False smut of rice is characterized by enlarged, velvety green balls that turn greenish-black.

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2

The disease ergot of rye produces sclerotia is caused by

Solution & Explanation Claviceps purpurea is the causal agent of ergot disease in rye.

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3

The bacterial colony is known as

Solution & Explanation Bacterial colonies often produce a slimy exudate known as ooze.

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4

The ascus is a sexual fruit of ascomycetes having a globose shape but no ostiole (opening) is known as

Solution & Explanation Cleistothecia are closed, spherical ascocarps without an ostiole.

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5

Which of the following is considered an abiotic cause of plant damage, rather than a biotic disease?

Solution & Explanation Abiotic disorders are caused by non-living environmental factors such as nutrient deficiencies, extreme temperatures, drought, or chemical imbalances. Powdery mildew, bacterial soft rot, viral mosaic, and nematode root knot are all biotic diseases caused by living organisms.

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Plant Pathology Quiz for IBPS AFO 2026

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