Agricultural Entomology - Study Mode
[#421] Bee venom is used for and released . . . . . . . . from acid glands.
Correct Answer
(A) Curing pains at joints
Explanation
Solution: Bee venom is used for and released Curing pains at joints from acid glands. Bee venom is secreted by a gland located in the abdominal cavity of the bees. It is an odorless and transparent acidic liquid that bees often use as a defense tool against predators. Honeybee venom (commercially known as Apitox or Apitoxin) is a combination of different compounds. Bee venom seemed to prevent arthritis with the help of hormones called glucocorticoids. These hormones help regulate inflammation. The use of bee venom, with the help of glucocorticoids, might slow the progression of inflammatory arthritis.
[#422] Scarification and presence of soil in pods with holes in groundnut under field conditions is a symptom of damage due to
Correct Answer
(C) Termites
Explanation
Solution: Scarification and the presence of soil in pods with holes in groundnut under field conditions is a symptoms of damage due to Termites. Termites penetrate and hollow out the tap root and stem thus killing the plant. Bore holes into pods and damage the seed. It removes the soft corky tissue from between the veins of pods causing scarification, weakening the shells, and making them liable to entry and growth of Aspergillus flavus that produces aflotoxins.
[#423] The amino acid which leads to formation of eye pigment ommochromes is
Correct Answer
(D) Both A and B
Explanation
Solution: The amino acid which leads to the formation of eye pigment ommochromes is Tyrosine and Tryptophan. Ommochromes are synthesized from tryptophan, and in insects, these pigments may serve as a convenient way of removing excess tryptophan, an amino acid that can rise to toxic concentrations during metamorphic transitions. They are responsible for yellow (oxidized xanthommatin) and red (reduced form) colours found in many invertebrates.
[#424] Damage in woolen garments is due to enzyme
Correct Answer
(B) Keratinase
Explanation
Solution: Damage in woolen garments is due to the enzyme Keratinase. When loss in tensile strength is compared, it is found that keratinase causes higher loss in strength than papain. This is attributed to the fact that keratinase ruptures the disulphide linkages in wool, thereby causing higher loss in tensile strength. If exposed to natural protein fibres such as wool or silk can cause irreversible damage, leading to loss of fabric strength, shape and poor colour fastness.
[#425] In ancient scripts, pipilika is referred to
Correct Answer
(A) Ants
Explanation
Solution: In ancient scripts, pipilika referred to Ants. Sant Gyaneshwar (12 - 13 th century), who can be credited with inspiring bhakti movement in India, mentioned pipilika-pth. He propounded three ways of spiritual transmission-pipilika (ant), market (monkey) and vihangam (bird). Saktavedha (penetration of energy) is ant-like. The movement of energy produces a sensation of crawling ants across body.