40. This water is held by the capillary forces around and between the particles and is of greatest importance to plant life. The phenomenon involved is. Bananas can be prevented from over-ripening by. (c): Auxin regulates some of the important plant growth movements like photoropism and geotropism. Well you can also check list of Online […] 168. Bundle sheath cells fix CO2 through C3 cycle. (c): Ethylene is a hormone which is used for ripening of fruit. Suitable combination of gases in atmosphere for fruit ripening is 80% ethylene (C2H4) and 20% CO2. The first carbon dioxide acceptor in C4-plants is. The deficiency symptoms of magnesium includes interveinal chlorosis in leaves and yellowing of leaves starting from basal to younger ones. (d) involvement of PS I and PS II pigment systems. File Type PDF 1000 Mcq Bank Questions Answers ... 1000 MCQ Bank Questions | Human Tooth | Tooth Enamel 1. Florigen is a chemical involved in flowering. (c): During photosynthesis a portion of light energy absorbed by chlorophyll and carotenoids is eventually stored as chemical energy via the formation of chemical bonds. Biology Question Bank – 189 MCQs on “Plant Physiology” – Answered! 33. Animal cells have pluriopotency which means the potential ability of a cell to develop any type of the cell in the animal body, e.g. (d): Plants require a day length or light period for flowering, this light period is called as photoperiod. It is the factor which is present in minimum amount. 25. 170. (b): Chlorophyll is the green pigment present in plants and some photosynthetic bacteria. (d): Transpiration is least in high atmospheric humidity. (d): The core metal of chlorophyll is Mg. Chlorophyll is a chlorin pigment, which is structurally similar to and produced through the same metabolic pathway as other porphyrin pigments such as heme. (b): Photolithotrophs are those plants that obtain energy from radiation and hydrogen from inorganic compounds. Imbibition of water causes the embryo within seed to produce a- and P-amylases. It regulates movement of stomata. 59. This statement regarding enzyme inhibition is correct (a) non-competitive inhibitors often bind to the enzyme irreversibly (b) non-competitive inhibition of an enzyme can be overcome by adding a large amount. 112. 154. (b): Long day plants (LDP) or Long day flowering plants are plants which flower when they are exposed to longer photoperiod that is, more than critical day length. (b) amount of water absorbed equals the amount transpired. 130. (a): Minerals absorbed by roots move to the leaf through xylem. Chemotropism is a directional paratonic movement that occurs in response to a chemical stimulus. Klinostat is employed in the study of. 51. 8. (d): Many experiments were done to sustain the proliferation of normal stem tissues in culture. 128. Anatomy & Physiology Textbook , MCQ & Test Bank (Package Name: com.quizover.app.course.col11496) is developed by QuizOver.com and the latest version of Anatomy & Physiology Textbook , MCQ & Test Bank 2.1.1 was updated on March 20, 2018. Farmer’s potometer and Ganong’s | potometer. (c): Gibberellin is a hormone that replaces vernalisation. 9. Auxin is the only plant growth hormone known to be transported polarly. (ii) Presence of impermeable (impervious) seed coat to H20, e.g. As Calvin cycle takes in only one carbon (as CO2) at a time, so it takes six turns of the cycle to produce a net gain of six carbons (i.e., hexose or glucose). Then water from root hair moves to the cells of the cortex along the concentration gradient and finally reaches the xylem. (b): Capillary water in soil is available for root absorption. It might be increasing permeability of membranes of cells in the tissues before ripening of fruits. (b): Auxin is a growth promoting phytohormone. Klinostat comprises a disc with pot which is rotated by an axial rod with the help of a motor. Two cells A and B are contiguous. 160. The main function of these bodies is to seal off the sieve tube element or sieve cell by bringing about the blockage of sieve plate. DPD determines the direction of net movement of water. A high amount of potassuim is required in the process of protein synthesis. 80. (a): Magnesium is important c6nstituent of chlorophyll, thus is found in all green plants and essential for photosynthesis. It is a movement of leaves of many species from nearly horizontal leaves during the day and nearly vertical at night. 230. 106. 180. The physiological mechanism for flowering is controlled by 2 factors: photoperiod or light period, i.e., photoperiodism and low temperature, i.e., vernalization. Photoperiod below a critical length and uninterrupted long night plants b has osmotic pressure atm! 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