Plant Pathology - Study Mode
[#571] Match the following columns: Column I (OM) Column II (P 2 O 5 %) a. FYM 1. 0.51 b. Bird guano 2. 0.25 c. Night soil 3. 11 - 14 d. Compost 4. 4.0
Correct Answer
(B) a-2, b-3, c-4, d-1
Explanation
Solution: a. FYM (Farmyard manure), is primarily made from cow dung, cow urine, waste grass and other dairy waste. It is rich in nutrients. It contains 0.25% of P 2 O 5 . b. Bird guano is the desiccated droppings of seabirds and it is a highly effective fertilizer. It contains 11 - 14% of P 2 O 5 . c. Night soil is human excreta collected from cesspools, septic tanks, etc., and is removed usually at night and is a good source of fertilizer with 4.0% of P 2 O 5 . d. Compost is a mixture of ingredients used to fertilize and improve the soil. It is commonly prepared by decomposing plant and food waste and recycling organic materials. It contains 0.51%.
[#572] Shape of MLO is
Correct Answer
(D) Polymorphic
Explanation
Solution: The shape of MLO is Polymorphic. Mycoplasma is a genus of bacteria that, like the other members of the class Mollicutes, lack a cell wall around their cell membranes. They can be parasitic or saprotrophic. Due to the absence of cell walls, these organisms can change their shape and are polymorphic, which means, occur in several different forms, in particular concerning species or genetic variation.
[#573] Which one occurs both during cyclic and noncyclic modes of photophosphorylation?
Correct Answer
(B) Formation of ATP
Explanation
Solution: Formation of ATP occurs both during cyclic and noncyclic modes of photophosphorylation. The phosphorylation of ADP to form ATP using the energy of sunlight is called photophosphorylation. Whether the process is cyclic or non-cyclic both involve the formation of ATP molecules. This consumes the H + ions produced by the splitting of water, leading to a net production of $$frac{1}{2}{{ ext{O}}_2},$$ xa0ATP and NADPH + H + with the consumption of solar photons and water. In cyclic photophosphorylation, the high-energy electron released from P700, a pigment in a complex called photosystem I, flows in a cyclic pathway. Non-cyclic photophosphorylation is a two-stage process involving two different chlorophyll photosystems in the thylakoid membrane.
[#574] Pyruvic acid, the last product of glycolysis, is degraded to CO 2 and H 2 in
Correct Answer
(C) Matrix of mitochondria
Explanation
Solution: Pyruvic acid, the last product of glycolysis, is degraded to CO 2 and H 2 in the Matrix of mitochondria. Glycolysis is a cytoplasmic pathway that breaks down glucose into two three-carbon compounds and generates energy. The final step of glycolysis is catalyzed by pyruvate kinase to form pyruvate and another ATP. During fasting, glucagon activates protein kinase A which phosphorylates pyruvate kinase to inhibit it.
[#575] Nuclear polyhedrosis virus (NPV) is the most effective for control of
Correct Answer
(C) Helicoverpa armigera
Explanation
Solution: Nuclear polyhedrosis virus (NPV) is the most effective for the control of Helicoverpa armigera. NPV is the preferred product for Helicoverpa management, not only because it is effective but because it preserves the full range of beneficial insects in the crop. The nuclear polyhedrosis virus (NPV), part of the family of baculoviruses, is a virus affecting insects, predominantly moths and butterflies. It has been used as a pesticide.