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41
Malaria was first identified in
Discuss
Answer & Solution
Answer: Option B
Solution:
Malaria was first identified in Hyderabad.
Sir Ronald Ross Institute of Parasitology is a malaria research institute located in Begumpet, Secunderabad, Hyderabad, India. Established in 1955, the institute is a division of Osmania University.
Sir Ronald Ross was posted as a general duty medical officer to the regiment stationed in Secunderabad in 1893. His study confirmed that mosquitoes were the carriers of malaria parasites. For his work in demonstrating the life cycle of the parasites of malaria in mosquitoes, and thus establishing the hypothesis of Laveran and Manson, Ross was awarded the Nobel Prize in 1902.
42
Which one of the following is a carbamate pesticide?
Discuss
Answer & Solution
Answer: Option A
Solution:
Aldicarb is a carbamate pesticide.
Aldicarb is a carbamate insecticide which is the active substance in the pesticide Temik. It is effective against thrips, aphids, spider mites, lygus, fleahoppers, and leafminers, but is primarily used as a nematicide.
Aldicarb is a cholinesterase inhibitor that prevents the breakdown of acetylcholine in the synapse.
43
Which of the following pairs is not correctly matched in the term of Insect and Sex Pheromone?
Discuss
Answer & Solution
Answer: Option D
Solution:
A. Pink boll ⇔ worm Gossyplure
The pink bollworm is an insect known for being a pest in cotton farming. The adult is a small, thin, gray moth with fringed wings. Gossyplure the pink bollworm sex pheromone has been used commercially since 1977 to suppress pest populations by disrupting mating in cotton.
B. American boll ⇔ worm Hetilure
Bollworm is the common term for a moth larva that attacks the fruiting bodies of certain crops, especially cotton. Hetilure is its pheromone.
C. Bombyx mori ⇔ Bombykol
Bombykol is a pheromone released by the female silkworm moth to attract mates. It is also the sex pheromone in the wild silk moth (Bombyx mandarina). Discovered by Adolf Butenandt in 1959, it was the first pheromone to be characterized chemically. Butenandt named the substance after the moth's Latin name Bombyx mori.
D. Cotton boll ⇔ weevil Hexalure is not correctly matched. Weevil hexalure is not a sex pheromone nor cotton boll is any insect.
The boll weevil is a beetle that feeds on cotton buds and flowers. The boll weevil lays its eggs inside buds and ripening bolls (fruits) of the cotton plants.
44
Callosobruchus chinensis is storage pest of
Discuss
Answer & Solution
Answer: Option B
Solution:
Callosobruchus chinensis is a storage pest of Gram.
Callosobruchus chinensis is a common species of beetle found in the bean weevil subfamily, and is known to be a pest to many stored legumes.
It is commonly known as the adzuki bean weevil it is not a true weevil, belonging instead to the leaf beetle family, Chrysomelidae.
Some of their common host plants include green gram, lentil, cowpea, pigeon pea, chickpea and other pea species though they are known to live on many more legume hosts.
45
Which of the following pair is not correct in the term of Silk worm and Species?
Discuss
Answer & Solution
Answer: Option D
Solution:
A. Tasar silk worm ⇔ Antheraea mylitta
Antheraea paphia, known as the South India small tussore, the tasar silkworm and vanya silkworm is a species of moth of the family Saturniidae found in India and Sri Lanka. The bulk of the literature on this species uses a junior synonym, Antheraea mylitta.
B. Munga silk worm ⇔ Antheraea assame
Antheraea assamensis, known as the muga silkworm as a larva and Assam silk moth as an adult, is a moth of the family Saturniidae. The species was first described by Johann Wilhelm Helfer in 1837.
C. Eri silk worm ⇔ Sanja cynthia ricini
Samia cynthia, the ailanthus silkmoth, is a saturniid moth, used to produce silk fabric but is not as domesticated as the silkworm. The eri silk worm is the only completely domesticated silkworm other than Bombyx mori. The silk is extremely durable, but cannot be easily reeled off the cocoon and is thus spun like cotton or wool.
D. Mulberry silkworm ⇔ Antheraea spp is not correctly matched.
Antheraea paphia, known as the South India small tussore, the tasar silkworm and vanya silkworm not mulberry silkworm.
46
The connecting link between glycolysis and Krebs cycle
Discuss
Answer & Solution
Answer: Option A
Solution:
The connecting link between glycolysis and Krebs cycle is Acetyl Co A enzyme.
Acetyl-CoA (acetyl coenzyme A) is a molecule that participates in many biochemical reactions in protein, carbohydrate and lipid metabolism.
Its main function is to deliver the acetyl group to the citric acid cycle (Krebs cycle) to be oxidized for energy production. CoA is acetylated to acetyl-CoA by the breakdown of carbohydrates through glycolysis and by the breakdown of fatty acids through β-oxidation.
Acetyl-CoA then enters the citric acid cycle, where the acetyl group is oxidized to carbon dioxide and water, and the energy released is captured in the form of 11 ATP and one GTP per acetyl group.
47
Which one of the following is not correctly matched in the term of Disease and Insect (Vector)?
Discuss
Answer & Solution
Answer: Option B
Solution:
A. Sesamum phyllody ⇔ Leaf hopper
It is a destructive disease and it is transmitted by leafhoppers it is important to know the suitable time for cultivation of sesame and the effect of meteorological parameters on disease incidence for planning management strategies to get the optimum yield.

B. Pigeonpea Sterility mosaic ⇔ Thrips, are not correctly matched. It is not transmitted by thrips.
The causal agent of the disease is PPSMV, a virus with a segmented, negative-sense, single-stranded RNA genome, transmitted in a semi-persistent manner by an eriophyid mite Aceria cajani Channabassavanna.

C. Wheat streak mosaic ⇔ Eriophyid mite
Wheat streak mosaic virus is transmitted by the eriophyid mite, Aceria tosichella Keifer (Acari: Eriophyidae). Wheat is the preferred host for wheat curl mites and an excellent host for Wheat streak mosaic virus.

D. Bhindi VMV ⇔ White fly
Bhendi yellow vein mosaic virus (BYVMV) or okra yellow vein mosaic (OYVMV) is a viral disease caused by monopartite Begomovirus affecting okra plants. The virus is spread by whitefly.
48
Excreta of earth worm is
Discuss
Answer & Solution
Answer: Option C
Solution:
Excreta of earth worm is Vermicasting.
Vermicast (also called worm castings, worm humus, worm manure, or worm faeces) is the end-product of the breakdown of organic matter by earthworms.
This excreta have been shown to contain reduced levels of contaminants and a higher saturation of nutrients than the organic materials before vermicomposting.
49
The insect family whose larvae are called 'Round headed borers' is
Discuss
Answer & Solution
Answer: Option B
Solution:
The insect family whose larvae are called 'Round headed borers' is Cerambycidae.
The antennal sockets are located on low tubercles on the face; other beetles with long antennae lack these tubercles, and cerambycids with short antennae still possess them.
The larvae, called roundheaded borers, bore into wood, where they can cause extensive damage to either living trees or untreated lumber.
50
Pest which occurs regularly and in serious manner is known as
Discuss
Answer & Solution
Answer: Option A
Solution:
Pest which occurs regularly and in serious manner is known as Epidemic.
An epidemic is the rapid spread of disease to a large number of hosts in a given population within a short period.
By the early 17th century, the terms endemic and epidemic referred to contrasting conditions of population-level disease, with the endemic condition at low rates of occurrence and the epidemic condition widespread.