Free Plant Protection MCQs with Answers

• A. Grub
• B. Pupa
• C. Puparium
• D. Imago

Explanation: The adult insect emerging after complete metamorphosis is the imago. The pupa is the transitional stage, while a grub is a particular type…

• A. Maggot
• B. Grub
• C. Imago
• D. None of these

Explanation: A grub is the usual term for a coleopteran larva, including legless forms with a small head and reduced sensory organs.

• A. Pupa
• B. Larva
• C. Nymph
• D. Naiad

Explanation: Terrestrial young of hemimetabolous insects are called nymphs and resemble small, wingless adults.

• A. Nymph
• B. Naiad
• C. Pupa
• D. Larvae

Explanation: Holometabolous insects pass through egg, larva, pupa, and adult stages, so their young stage is the larva.

• A. Holometabola
• B. Hypermetamophosis
• C. Ametabola
• D. Hemimetabola

Explanation: Holometabola undergo complete or indirect metamorphosis, with clearly different larval, pupal, and adult stages.

• A. Malformation
• B. Boring
• C. Gall
• D. Malnutrition

Explanation: A gall is an abnormal plant growth or proliferation induced by organisms such as insects, mites, or fungi.

• A. Non of the above
• B. Applied Entomology
• C. Zoology
• D. Entomology

Explanation: Entomology is the branch of zoology concerned specifically with insects.

• A. Fungi
• B. Bacteria
• C. Virus
• D. Nematodes

Explanation: Root-knot disease is caused by parasitic Meloidogyne nematodes, which induce characteristic galls on roots.

• A. Any organism which causes diseaseHire Grant Writers
• B. Any bacteria which causes disease
• C. Any virus which causes disease
• D. Fungi which cause disease

Explanation: A pathogen is any disease-causing organism, including fungi, bacteria, viruses, nematodes and other infectious agents.

• A. Pyrethroid
• B. Carbamates
• C. Organo-chlorine
• D. Organio-phosphate

Explanation: Organochlorines generally persist longest because they are chemically stable and degrade slowly in the environment.

• A. DDT
• B. Aldrin and Diehydrin
• C. Aindone and Heptachlor
• D. All the aboveTrack Health Symptoms

Explanation: DDT, aldrin, dieldrin and heptachlor are organochlorine insecticides, so the intended choice is the inclusive option.

• A. rice
• B. Sugarcane
• C. Cotton
• D. Wheat

Explanation: Rice blast, caused by Magnaporthe oryzae, is a major worldwide disease of rice.

• A. Mango
• B. Citrus (Lemon)
• C. Guava
• D. none

Explanation: Gummosis is a characteristic disease problem of citrus, in which gum exudes from infected bark and trunk tissues.

• A. Soybean
• B. Sunflower
• C. none of these
• D. Ground nuts

Explanation: Tikka, or early and late leaf spot, is the familiar leaf-spot disease complex of groundnut (peanut).

• A. Cotton leaf curl virus
• B. Cotton stem crinkle virus
• C. Cotton boll rot virus
• D. None of the above

Explanation: Cotton leaf curl virus is the principal viral disease associated with serious cotton losses, especially in South Asian cotton-growing…

• A. Microtermas sp
• B. Amrosca devestons
• C. Earias insulana
• D. Aphis gossypi

Explanation: The cotton jassid is scientifically known as Amrasca devastans, although the option contains spelling errors as “Amrosca devestons.” Aphis…

• A. Pathology
• B. Fungicology
• C. Mycology
• D. Genetics

Explanation: Mycology is the branch of biology concerned with fungi. Pathology studies diseases generally, whereas genetics deals with heredity and…

• A. Powdery mildew
• B. Downy mildew
• C. Blight
• D. None

Explanation: Powdery mildew is a major disease of field pea, producing a conspicuous white fungal growth on leaves and other plant parts.

• A. Pemospora Parasitica
• B. Albugo candida
• C. Alternarian solani
• D. Aspergillus niger

Explanation: White rust of cruciferous crops is caused by Albugo candida, an oomycete pathogen.

• A. They are very small
• B. They are parasites
• C. They have no chlorophyll
• D. All the above

Explanation: Fungi cannot manufacture food by photosynthesis because they lack chlorophyll, so they obtain nutrients from organic matter as saprophytes…