Plant Pathology - Study Mode

[#276] Renowned scientist Dr. N. E. Borlaug belongs to
Correct Answer

(D) Plant Pathology

Explanation

Solution: Renowned scientist Dr. N. E. Borlaug belongs to Plant Pathology. Norman Ernest Borlaug was an American agronomist who led initiatives worldwide that contributed to the extensive increases in agricultural production termed the Green Revolution.
Borlaug received his B.S. in forestry in 1937 and Ph.D. in plant pathology and genetics from the University of Minnesota in 1942. Borlaug was awarded multiple honours for his work, including the Nobel Peace Prize, the Presidential Medal of Freedom and the Congressional Gold Medal.

[#277] Match the following columns: Column I (Fertilisers) Column II (N Content %) a. Anhydrous ammonia 1. 16 b. Ammonium phosphate 2. 82 c. Di-ammonium phosphate 3. 18 - 21 d. Ammonium chloride 4. 25
Correct Answer

(A) a-2, b-1, c-3, d-4

Explanation

Solution: a. N content in Anhydrous ammonia is 82%. Anhydrous ammonia, NH 3 , is typically among the least expensive sources of nitrogen and contains 82 percent nitrogen by weight, the highest of all available sources. b. N content in Ammonium Phosphate is 16%. Ammonium phosphate is an inorganic compound with the formula (NH 4 ) 3 PO 4 . It is the ammonium salt of orthophosphoric acid. c. N content in Di-ammonium phosphate is 18 - 21%. DAP (NH 4 ) 2 HPO 4 : Fertilizer grade DAP Contains 18% Nitrogen and 46% Phosphorus (P 2 O 5 ). DAP is manufactured by reacting Ammonia with Phosphoric acid under controlled conditions in fertilizer plants. d. N content in Ammonium chloride is 25%. Ammonium chloride, a by-product of sodium bicarbonate production, contains 25 and 65% N and chlorine, respectively, and can be used as a nitrogen fertilization source in crops.

[#278] Cyclic photophosphorylation produces
Correct Answer

(D) ATP only

Explanation

Solution: Cyclic photophosphorylation produces ATP only. Cyclic photophosphorylation occurs in both aerobic and anaerobic conditions, driven by the main primary source of energy available to living organisms, which is sunlight. In photophosphorylation, light energy is used to pump protons across a biological membrane, mediated by the flow of electrons through an electron transport chain. This stores energy in a proton gradient. As the protons flow back through an enzyme called ATP synthase, ATP is generated from ADP and inorganic phosphate.

[#279] Which of the following small grain crops has an exceptional tolerance to law leaves of soil copper supply?
Correct Answer

(A) Barley

Explanation

Solution: Barley is a small grain crops that has exceptional tolerance to law leaves of soil copper supply. Barley is a small grain crop that has exceptional tolerance to law leaves of soil copper supply. Ears of copper deficient plants are often trapped in the sheath and emerge with white tips and blind spikelets plants show dry, white and twisted tips. Young leaves wilt on their tips whereas the basal leaves remain dark green.

[#280] Kittleson's killer is the other name for
Correct Answer

(C) Captan

Explanation

Solution: Kittleson's killer is the other name for Captan. It is trichloromethyl-thio-4-cyclohexene-1,2- dicarboximide. Kittleson 1952 first prepared this compound and reported its fungicidal property. Thus, called "Kittleson‟s Killer”. Captan is a general-use pesticide (GUP) that belongs to the phthalimide class of fungicides. It is a white solid, although commercial samples appear yellow or brownish.