Description : In green plants light favour the formation of a. Auxin b. GA c. ABA d. IBA
Last Answer : Auxin
Description : The compounds which inhibit the activity of auxins are known as: a. Auxin antagonists b. Antiauxins c. Epinostic agent d. All of above
Last Answer : Antiauxins
Description : The major auxin produced in plants is: a. Indole-3-butyric acid (IBA) b. Naphthalene acetic acid (NAA) c. Indole-3-acetic acid (IAA) d. Ethylene
Last Answer : Indole-3-acetic acid (IAA)
Description : The first ever auxin discovered was: a. IBA b. IPA c. IAA d. None of above
Last Answer : IAA
Description : In plants auxin are mainly present in: a. Root tips b. Stem end c. Shoot tips d. Leaf margins
Last Answer : Shoot tips
Description : Auxin antagonists compounds interact with auxins as: a. Counteract b. Increase c. Decrease d. None of the above
Last Answer : Counteract
Description : Germination is inhibited by— (A) Red light (B) Blue light (C) U.V. light (D) I.R. light
Last Answer : (C) U.V. light
Description : Maximum photosynthetic activity occurs in - (1) blue and red region of light (2) green and yellow region of light (3) blue and orange region of light (4) violet and orange region of light
Last Answer : (1) blue and red region of light Explanation: Wavelength of light between 400 nm and 700 nm is most effective for photosynthesis. This light is called photo synthetically active radiation (PAR). ... in red and minimum in blue region. In both these regions light is absorbed by chlorophylls.
Description : Maximum photosynthetic activity occurs in : (1) blue and red region of light (2) green and yellow region of light (3) blue and orange region of light (4) violet and orange region of light
Last Answer : blue and red region of light
Description : Potato tubers become green if a. Exposed to light b. Attacked by insect c. Infected d. None of these
Last Answer : Exposed to light
Description : What causes a green plant exposed to the light, on only one side, to bend towards the source of light as it grows? (a) Light stimulates plant cells on the lighted side to grow ... Green plants need light to perform photosynthesis. (d) Green plants seek light because they are phototropic.
Last Answer : (b) Auxin accumulates on the shaded side, stimulating greater cell elongation there
Description : The soil pH level primarily controls: a. Soil temperature b. Activity of soil-borne diseases c. Moisture absorption by roots d. Availability of essential plant nutrients
Last Answer : Availability of essential plant nutrients
Description : Physiological aging activity in which plant tissues degenerate and ultimately die is called a. Senescence b. Ripening c. Climacteric d. Degeneration
Last Answer : Senescence
Description : Which of the following perennials is hardy and having blue and lavender colour flowers? a. Verbena b. Dianthus c. Calendula d. Alyssum
Last Answer : Verbena
Description : Which of the following turf areas is mowed to the lowest height? a. Commercial lawn b. Golf fairway c. Home lawn d. Golf green
Last Answer : Golf green
Description : The only pest of date fruit at green hard stage is: a. Nightangale b. Parrot c. Sparrow d. All of above
Last Answer : Parrot
Description : Green potato tuber is inedible due to: a. Carcinogenic b. Hardness c. Hollowness d. None of above
Last Answer : Carcinogenic
Description : Plants, soft and green, and can be easily bent is known a. Herbaceous b. Woody c. Shrubs d. Non of these
Last Answer : Herbaceous
Description : Green hard stage of date fruit is: a. Kimri b. Rutab c. Doka d. Dung
Last Answer : Kimri
Description : Water melon for seed should be harvested when a. Tendrils wither b. Skin color is green c. Skin color is pale yellow d. Vine dry out
Last Answer : Tendrils wither
Description : Which of the shrub bears red colour flowers a. Atriplex halimus b. Tecoma stans c. Jatropha metrifeda d. Jasminum sambac
Last Answer : Jatropha metrifeda
Description : The showy red, pink, or white portion of the poinsettia are: a. Flowers b. Bracts c. Petals d. Sepals
Last Answer : Bracts
Description : Which of the tree bears red colour flowers? a. Erythrena subrosa b. Albizia lebbek c. Sapium sebiferum d. Thuja orientalus
Last Answer : Erythrena subrosa
Description : Jaccaranda mimosifolia has a. Red flowers b. Yellow flowers c. White flowers d. Purple flowers
Last Answer : Purple flowers
Description : Red colour of carrot is due to : a. Lycopene b. Carotene c. Anthocyanin d. Propanene
Last Answer : Carotene
Description : The commercial variety of watermelon is: a. Sugar baby b. Red beauty c. Red king d. Sugary
Last Answer : Sugar baby
Description : Peptidyl transferase activity of 50 S ribosomal subunits is inhibited by (A) Rifampicin (B) Cycloheximide (C) Chloramphenicol (D) Erythromycin
Last Answer : Answer : C
Description : Activity of cytochrome oxidase is inhibited by (A) Sulphite (B) Sulphate (C) Arsenite (D) Cyanide
Last Answer : Answer : D
Description : The activity of HMG-CoA reductase is inhibited by (A) A fungal inhibitor mevastatin (B) Probucol (C) Nicotinic acid (D) Clofibrate
Last Answer : Answer : A
Description : Pyruvate dehydrogenase activity is inhibited by (A) Mercury (B) Zinc (C) Calcium (D) Sodium
Description : All of the following statements about the enzymic complex that carries out the synthesis of ATP during oxidative phosphorylation are correct except (A) It is located on the matrix side of the inner ... inhibited by oligomycin (C) It can exhibit ATPase activity (D) It can bind molecular O2
Last Answer : D
Description : Which statement is NOT correct about PTH? A) When calcium level rises, PTH secretion is inhibited. B) When calcium level lowers, PTH secretion is stimulated. C) PTH has the opposite effect of ... . D) PTH stimulates calcium absorption from the gut. E) PTH decreases the activity of osteoclasts.
Last Answer : E) PTH decreases the activity of osteoclasts.
Description : 3 Diffusion of drugs across cell membrane: A. Is dependent upon metabolic activity of the cell B. Is competitively inhibited by chemically related drugs C. Is affected by extent of ionization of drug molecules D. Exhibits saturation kinetics
Last Answer : C. Is affected by extent of ionization of drug molecules
Description : A pl ant leaf appears to be green because it (a) Absorbs green light (b) Reflects all but yellow and blue light (c) Reflects green light (d) Absorbs red and yellow light
Last Answer : Ans:(c)
Description : Which light is least effective in photosynthesis? (1) Blue light (2) Green light (3) Red light (4) Sunlight
Last Answer : (2) Green light Explanation: Green is the least effective color of light in driving photosynthesis, the process of converting light energy into chemical energy. Photosynthesis occurs in plants ... reflects rather than absorbs green light, green light cannot be used in the photosynthetic process.
Description : Which colour is formed when Red and Green are mixed? (1) Light blue (2) Yellow (3) White (4) Grey
Last Answer : (2) Yellow Explanation: Red, green and blue are the primary colors and all other colors can be created from them. When red and green combine, the result is yellow.
Description : When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is - (1) the violet ray (2) the red ray (3) the green ray (4) the blue ray
Last Answer : (2) the red ray Explanation: Red is deviated the least and violet the most.
Description : Which color has the shortest wavelength of light? a. Red b. Yellow c. Blue d. Green
Last Answer : c. Blue
Description : What are the primary colors of Light? 33 A. White, Black, Blue B. Red, Yellow, Blue C. Red, Orange, Blue D. Red, Green, Blue (Answer)
Last Answer : D. Red, Green, Blue (Answer)
Description : Maximum photosynthesis takes place in— (A) Blue light (B) Red light (C) Violet light (D) Green light
Last Answer : (D) Green light
Description : Phytochrome becomes active in (a) red light (b) green light (c) blue light (d) none of these.
Last Answer : (a) red light
Description : One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of (a) violet and green light (b) indigo and green light (c) orange and yellow light (d) blue and red light.
Last Answer : (d) blue and red light.
Description : A student wishes to study the cell structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution? (a) Blue (b) Green (c) Yellow (d) Red
Last Answer : (a) Blue
Description : An aircraft is converging from the left. Which light will you see first? a. Red b. Green c. Blue d. White
Last Answer : b. Green
Description : Which color has the shortest wavelength of light? ∙ a. Red ∙ b. Yellow ∙ c. Blue ∙ d. Green
Last Answer : Green light
Description : Light intensity is expressed as: a. Foot-candles b. Micrometers c. Candlelights d. All of the above
Last Answer : Foot-candles
Description : Root formation is promoted in softwood cuttings under light intensity of __________ foot candles: a. 100-150 b. 150-200 c. 200-250 d. 250-350
Last Answer : 150-200
Description : Chlorophyll formation takes place within a light wavelength of _________: a. 150-200 b. 200-300 c. 300-675 d. 700-900
Last Answer : 300-675