agriculture MCQs – Page 240

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

4781. The viral disease can be controlled by_________________?
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A. Organo-chlorine pesticides

B. Pyrethroids

C. None of the above

D. Growing resistant varieties
4782. The sucking type insects of cotton are________________?
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A. Jassids and thrips

B. Thrips and whitefly

C. All the above

D. Wlutefly and jassids

4783. The granular formulation are commonly applied to control_______________?
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A. Jassids and thrips

B. Leaf minors

C. Fruit and stem borers

D. Whitefly

4784. Bemesia tabbaci is the name of_________________?
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A. Jassids

B. White fly

C. Thrips

D. Cutworms

4785. The heart like pumping organ in insect is_________________?
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A. None of the above

B. Dorsal Vessel

C. Spiracles

D. Vena Cava

4786. The sucking type insects of cotton are ________________?
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A. Jassids and thrips

B. All the above

C. Wlutefly and jassids

D. Thrips and whitefly

4787. Heliothus armigera is the name of_____________________?
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A. Gram pod borer

B. American boll warm

C. Com cob borer

D. None of the above
4788. The main pest of fruit in Pakistan is_________________?
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A. Leaf minor

B. Scale insects

C. Fruit fly

D. Hoppers

4789. Oceli is___________________?
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A. Sense organs of insect

B. Mouth parts of insect

C. Antennae in insect

D. Eye of insect
4790. The symptoms of powdery mildew appears on________________?
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A. Foliage of plants

B. Roots

C. Floral parts

D. ()

4791. Club root is disease of____________________?
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A. Okra

B. Tumip

C. Cabbage

D. Water melon

4792. Three regions of insect body are________________?
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A. None of the above

B. Head, thorax and abdomen

C. Head, abdomen and tail

D. Head, thorax and tail

4793. Which one of the following is disease of wheat_________________?
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A. Leaf rust

B. Loose rust

C. Strip rust

D. All the above
4794. The my co toxins are poisonous substance produced by__________________?
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A. None of the above

B. Plants

C. Fungi

D. Bacteria

4795. The entrance point for air in insects are known as _________________?
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A. Secretion

B. Spines

C. Trachea

D. Nervous system

4796. The economic injury level for white fly is________________?
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A. 2-3 nymphs/leaf

B. 1 nymphs/leaf

C. 3-4 nymphs/leaf

D. 1-2 nymphs/leaf
4797. __________ is gram-positive?
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A. Pseudomonas

B. Erwinia

C. Corynebacterium

D. Xanthomonas

4798. Blast disease is an international disease of________________?
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A. Cotton

B. Sugarcane

C. Wheat

D. rice
4799. The whole body of fungus is known as________________?
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A. Septale

B. Mycellium

C. Thallus

D. Hyphae

4800. ____________ converts ammonia into nitrite?
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A. Azotobacter

B. Nitrobacter

C. Rhizobium

D. Nitrosomonas