List of top Questions asked in ICAR AIEEA (PG)- 2023

How many nucleotides will be present in a double stranded DNA fragment of 2 kb ?

The interaction in which one organism is benefitted and the other is neither benefited nor harmed is known as

Given below are two statements :
Statement I : Bacterial plasmids can be used as a vector for gene transfer in plants.
Statement II : Plasmids are double stranded, extrachromosomal DNA found in bacteria which are capable of autonomous replication in suitable host.
In light of the above statements, choose the correct answer from the options given below.

Which of the following microorganisms lacks cell wall ?

Given below are two statements :
Statement (I): Irradiation of DNA with UV light cause formation of covalent bond between the thymine molecules on the same strand.
Statement (II): Thiamine dimerization in DNA caused by UV radiations can be reverted by Photo-reactivation.
In light of the above statements, choose the most appropriate answer from the options given below.

Which of the following is involved in the transfer of amino acids from cytoplasm to the ribosome for protein synthesis ?

Which of the following have the ability to convert ammonia into nitrite ?
(A) Nitrosomonas
(B) Nitrosospira
(C) Nitrosococcus
(D) Nitrobacter
(E) Nitrococcus
Choose the correct answer from the options given below :

Match List-I with List-II

List-I (Fungi) & List-II (Importance)
(A) Pleurotus ostreatus & (I) Phytopathogenic
(B) Magnaporthe oryzae & (II) Entomopathogenic
(C) Rhizophagus irregularis & (III) Edible
(D) Metarhizium & (IV) Mycorrhizal

Given below are two statements :
Statement (I): Plasma membrane in bacteria is composed of double layer of phospholipid molecules.
Statement (II): Plasma membrane is the site of enzymes involved in energy production in bacteria.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements:
Statement (I): Saccharomyces cerevisiae used in baking industry is a multicellular fungus.
Statement (II): Both haploid and diploid cells of Saccharomyces cerevisiae may divides asexually by budding.
In light of the above statements, choose the most appropriate answer from the options given below.

Which of the following traits are observed in archaea ?
(A) Absence of Peptidoglycan in cell wall
(B) Resistant to kanamycin
(C) Endospore formation
(D) Presence of S layer
Choose the correct answer from the options given below:

Given below are two statements :
Statement (I) : Phytoplasmas are wall less bacteria.
Statement (II) : Phytoplasma do possess flagella.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements:
Statement (I): Lichens are the symbiotic associations between a photobiont and a mycobiont partner.
Statement (II): Mycorrhizae are the symbiotic associations between plant root and fungi.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements :
Statement (I) : Transboundary pathogen triggered plant disease epidemics is responsible for famine in Europe in 19th century.
Statement (II) : Invasive pathogens are highly aggressive.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Bacterial phytopathogen do cause explosive epidemics.
Reason (R) : Bacterial phytopathogens have short generation time by binary fission.
In light of the above statements, choose the correct answer from the options given below.

Given below are two statements :
Statement (I) : Uredospores are motile.
Statement (II) : Viruses are motile.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Oomycetes pathogens need high moisture for their dissemination.
Reason (R) : Oomycetes pathogens do produce motile spores during their life cycle.
In light of the above statements, choose the correct answer from the options given below.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Only vegetatively propagated planting are responsible for transboundary movement of pathogens.
Reason (R) : High moisture contents in the vegetative propagation material supports pathogen viability.
In light of the above statements, choose the correct answer from the options given below.

Given below are two statements :
Statement (I) : Pathological wilt is usually irreversible leading to the death of plants.
Statement (II) : Physiogical wilt too is reversible prior to the permanent wilting point.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements :
Statement (I) : RNA is the only genetic element in plant viruses.
Statement (II) : RNA viruses are known to cause crop losses.
In light of the above statements, choose the most appropriate answer from the options given below.

Choose the correct answer from the options given below:
(A) Ralstonia causes wilt disease
(B) Fusarium causes wilt disease
(C) Verticillium causes wilt disease
(D) Pseudomonas causes wilt disease

Choose the correct answer from the options given below:
(A) Certain plant viruses are vectored by insect
(B) Certain plant viruses are transmitted by mechanical means
(C) No plant viruses are vectored by fungi
(D) No plant viruses are vectored by nematodes

Choose the correct answer from the options given below:
(A) Magnaporthe is a pathogen on dicot only
(B) Puccinia is a pathogen on monocot only
(C) Ralstonia is a pathogen on dicot and monocot
(D) RNA virus is a pathogen on dicot and monocot only

Match List-I with List-II
{|p{7cm}|p{7cm}|} List-I (Theory proposed/Characteristic) & List-II (Author/Thinker)
(A) Gene for Gene & (I) H.H. Flor
(B) Germ Theory & (II) Anton de Bary
(C) Puccinia path & (III) K.C. Mehta
(D) Elicitor & (IV) Noel T Keen

Evolutionarily linked Genome Reduction is observed in __________.
(A) Xylella
(B) Phytoplasma
(C) Phytophthora
(D) Magnaporthe
Choose the correct answer from the options given below :