Nematology 01 — Agri Master Mind
Nematodes are placed in the Phylum-
- Nematoda
- Annelids
- Nemathelminthes
- Aschelminthes
Which is the most important nematode of vegetables?
- Heterodera avenae
- Anguina tritici
- Rotylenchulus reniformis
- Meloidoge incognita
Tylenchulus semipenetrans is a-
- Ectoparasitic
- Endoparasitic
- Semiendoparasitic
- Parasite of above ground part
Root-knot disease was first reported in the World by-
- Berklay
- Barber
- Butler
- Franklin
TOBRA viruses are transmitted by-
- Trichodorus
- Xiphinema
- Longidours
- Paralongidours
Which is a fungal parasite on eggs of nematodes?
- Paceilomyces spp.
- Pasturia penetrans
- Bacillus subtilis
- Pseudomonas fluoresceus
Which is economically most important nematode in India?
- Heterodera avenae
- Anguina tritici
- Meloidogyne incognita
- Rotylenchulus reniformis
Nematode body is -
- Triploblastic
- Unsegmented
- Pseudo coelomate
- All of these
Root-knot nematode completes its life cycle in-
- 28-30 days
- 20-22 days
- 40-45 days
- 35-40 days
Cyst nematodes are --
- Ectoparasitic
- Sedentary Semiendoparasitic
- Migratory Semiendoparasitic
- Sedentary endoparasitic
Sexual dimorphism is generally observed in-
- Stunt nematodes
- Burrowing nematodes
- Lesion nematodes
- Root-knot nematodes
Main host of Anguina tritici is-
- Maize
- Paddy
- Wheat
- Mustard
Nemacur is basically of -
- Carbamate group
- Organophosphate group
- Helogenated hydrocarbons group
- Nitrogenous group
Flooding of field with water for nematode management produces
- NO.
- Ammonia.
- Methane
- CO2
Who discovered first time Heterodera avenae in India?
- Vasudeva
- Milne
- Sethi & Swarup
- Koshy
Which is the most important cultural method decreases the Heterodera avenac population?
- Crop rotation
- Summer ploughing
- Flooding
- Fallowing
Who reported Anguina tritici first time in India?
- Milne, 1919
- Barber, 1901
- Butler, 1906
- Jones, 1961
Which is sedentary semi-endoparasite-
- Meloidogyne hapla
- Anguina tritici
- Aphelenchoides besseyi
- Rotylenchulus reniformis
Which is a truly seed-borne nematode -
- Aphelenchoides besseyi
- Anguina tritci
- Radopholus similis
- Ditylenchus angustus
Which is an egg parasite of nematodes -
- Pasteuria penetrans
- Nematophora gynophila
- Arthrobotrys oilgospora
- Paecilomyces lilacinus
What is the role of nematode in Tundu disease of wheat-
- Vector
- Aggravator
- Incitant
- Pathogen
Syncytium is formed by-
- Root-knot nematodes in cortical parenchyma
- Cyst nematodes in vascular tissues
- Cyst nematode in cortical parenchyma
- Citrus nematode in cortical parenchyma
The infective stage in reniform nematode is-
- Pre-adult female
- Immature female
- Second stage juvenile
- Infective juvenile
Which is the best method of managing molya disease of wheat and barley-
- Application of carbofuran
- Crop rotation with chickpea
- Growing Raj MR-1 variety of wheat
- Early sowing of wheat
Earcockle and tundu diseases can easily be eradicated by-
- Use of certified seed
- Water floatation of contaminated seed
- Winnowing and Fanning to separate cockles
- Hot water treatment of seed
Which of these edaphic factors is most crucial for damage to the crops -
- Temperature
- Moisture
- Texture
- Ph
Which of these edaphic factors is most crucial for development of nematodes -
- Temperature
- Moisture
- Texture
- pH
The name of cereal cyst nematode is……
- Anguina tritici
- Heterodera avenae
- Tylenchulus spp.
- Meloidogyne spp.
The molya disease of cereals is caused by a nematode……
- Heterodera avenae
- Anguina tritici
- Meloidogyne sp.
- None of these
Which plant parasitic nematode (PPN) was first discovered in the world……
- Anguina tritici
- Heterodera avenae
- Meloidogyne spp.
- Tylenchulus semipenetrans
In Rajasthan 50% losses is caused from single nematode which is…….
- Anguina tritici
- Heterodera avenae
- Meloidogyne spp.
- Tylenchulus sp.
Seed gall or ear cockle disease is caused by.....
- Anguina tritici
- Heterodera avenae
- Meloidogyne sp.
- None of these
First plant parasitic nematode (PPN) discovered by…..
- Batler, 1901
- JT Needham, 1743
- Milne, 1919
- Berkeley, 1855
Which nematode attacks on ear head (flower part) of cereals............?
- Anguina tritici
- Heterodera avenae
- Meloidogyne spp.
- Tylenchulus semipenetrans
Name of the root knots or root gall nematode is.
- Anguina tritici
- Heterodera avenae
- Meloidogyne spp.
- Tylenchulus semipenetrans
Which plant parasitic nematode was discovered firstly from India
- Anguina tritici
- Heterodera avenae
- Tylenchulus spp.
- Meloidogyne spp.
Which scientist is known as father of nematology……
- N.A Cobb
- Barkley
- Bastian
- H.
Seed treatment of crops for nematode control is carried out through....
- Rogor
- Temik
- Confidor
- Tracer
First plant parasitic nematode (PPN) was discovered in the year…..
- 1686
- 1743
- 1843
- 1943
Most of plant parasitic nematodes attacks through……..
- Clauca
- Amphids
- Stomatostylets
- Integument
In plant parasitic nematodes host cell (roots) is recognized through presence of a paired structure...
- Amphids
- Derides
- Phasmids
- both a & c
Tundu disease is caused by………
- Anguina tritici
- Clavibacter tritici
- Anguina tritici + Clavibacter
- Heterodera spp. + Clavibacter
Mostly plant parasitic nematodes attacks on...
- Stem
- Leaves
- Flower
- Root
Nematode (Meloidogyne) resistant variety of tomato is..............
- Hisar lalit
- SL-120
- Pusa rubi
- A & B both
Nematode having two ovaries is called...
- Diorchic
- Monorchi
- Didelphic
- Monodelphic
Solar heat treatment is discovered by…….
- Luthara and sattar
- Jensen
- Butler
- Bastian
Carbofuran (nematicide) belongs to the group........
- Organophosphates
- Organocarbamates
- Organochlorines
- None of these
Which is a virus vector (transmits) nematode………
- Heterodera avenae
- Anguina tritici
- Xiphenema index
- Meloidogyne spp.
Most of plant parasitic (stylet bearing) nematode belongs to order.........
- Tylenchida
- Dorylaimida
- Adenophorea
- All of these
Shape of female nematode may be…….
- Kidney shaped
- Apple shaped
- Melon shaped
- all of these