Description : Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what ... . (c) It supports the hypothesis that IAA is auxin. (d) It demonstrated polar movement of auxins
Last Answer : (a) It made possible the isolation and exact identification of auxin.
Description : The Avena curvature is used for bioassay of (a) IAA (b) ethylene (c) ABA (d) GA3.
Last Answer : (a) IAA
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 : Phototropic curvature is the result of uneven distribution of (a) gibberellin (b) phytochrome (c) cytokinins (d) auxin.
Last Answer : (d) auxin.
Description : Soil salinity is measured by: (a) Potometer (b) Porometer (c) Conductivity meter (d) Calorimeter
Last Answer : Ans. ((c))
Description : Apparatus to measure rate of respiration and R.Q. is (a) auxanometer (b) potometer (c) respirometer (d) manometer.
Last Answer : (c) respirometer
Description : Which of the following is used to determine the rate of transpiration in plants? (a) Porometer/Hygrometer (b) Potometer (c) Auxanometer (d) Tensiometer/Barometer
Last Answer : (b) Potometer
Description : Potometer works on the principle of (a) osmotic pressure (b) amount of water absorbed equals the amount transpired (c) root pressure (d) potential difference between the tip of the tube and that of the plant.
Last Answer : (b) amount of water absorbed equals the amount transpired
Description : Difference between hypocotyl and epicotyl? -Biology
Last Answer : answer:
Description : The nutritive tissue in the seeds of higher plants is known as - (1) hypocotyl (2) embryo (3) endosperm (4) nucellus
Last Answer : (3) endosperm Explanation: The seed includes three primary regions: the embryo, nutritive tissue, and seed coat. Endosperm is a nutritive tissue that sustains the embryo and seedling. The endosperm may ... the embryo as in many legumes, which use the cotyledons as a food source during germination.
Description : The portion of axis below the cotyledons in seed is: a. Micropyl b. Hypocotyl c. Epicotyl d. None of above
Last Answer : Hypocotyl
Description : Albuminous seeds store their reserve food mainly in (a) endosperm (b) cotyledons (c) hypocotyl (d) perisperm.
Last Answer : (a) endosperm
Description : Differentiate between hypocotyl and epicotyl.
Last Answer : Ans: The part of embryonal axis below the cotyledon is known as hypocotyl whereas the part of embryonal axis above the cotyledon is known as epicotyl.
Description : The nutritive tissue in the seeds of higher plants is known as (1) hypocotyl (2) embryo (3) endosperm (4) nucellus
Last Answer : endosperm
Description : Which of the following is example of objectionable weed a. Avena fatua b. Chicory c. Phalaris minor d. All of thes
Last Answer : d. All of these
Description : Which of the following is example of objectionable weed a. Avena fatua b. Chicory c. Phalaris minor d. All of these
Description : . A weed acting as a satellite weed a). Avena fatua b). Cuscuta sp c). Cichorium sp d). All of these
Last Answer : d). All of these
Description : A weed not controlled by clodinafop propargyl in wheat a). Poa annua b). Phalaris minor c). Avena ludoviciana d). Lolium temulentum
Last Answer : a). Poa annua
Description : . A common weed of lowland rice a). Phalaris minor b). Avena fatua c). Monochoria vginalis d). Lolium temulentum
Last Answer : c). Monochoria vginalis
Description : The most common weed in wheat a). Avena ludoviciana b). Echinochloa colona c). Panicum dichotomiflorum d). Eleusine indica
Last Answer : a). Avena ludoviciana
Description : C4 weed a). Avena fatua b). Lolium temulentum c). Sorghum halepense d). Phalaris minor
Last Answer : c). Sorghum halepense
Description : Flooding is an effective strategy to control a). Avena ludoviciana b). Sorghum halepense c). Cynodon dactylon d). All e). None
Description : A weed with a balloon structure for effective dissemination a). Physalis minima b). Avena fatua c). Phalaris minor d). Amaranthus viridis
Last Answer : a). Physalis minima
Description : Write the function of each one of the following (i)Fimbriae (oviducal) (ii)Coleoptile (iii) Oxytocin -Biology
Last Answer : i)Fimbriae are the . feathery finger-like projections present at the end of Fallopian tubes and it collects the ovum after its release from the ovary into the Fallopian tube. (ii) ... by the posterior pituitary and it stimulates the contraction of uterine muscles during child birth (parturition).
Description : Difference between coleoptile and coleorhiza? -Biology
Description : What is the function of the coleoptile in a plant? -Biology
Description : Name the hormone which influence the tip of coleoptile and bend it towards light
Last Answer : Name the hormone which influence the tip of coleoptile and bend it towards light
Description : In a cereal grain the single cotyledon of embryo is represented by (a) coleoptile (b) coleorhiza (c) scutellum (d) prophyll.
Last Answer : (c) scutellum
Description : The wheat grain has an embryo with one large, shield shaped cotyledon known as (a) scutellum (b) coleoptile (c) epiblast (d) coleorhiza.
Last Answer : (a) scutellum
Description : Cotyledon of maize grain is called (a) coleoptile (b) scutellum (c) plumule (d) coleorhiza.
Last Answer : (b) scutellum
Description : In dwarf wheat sowing depth is related to — a. Temperature b. Rainfall c. Radicle length d. Coleoptile length
Last Answer : d. Coleoptile length
Description : 5.Scutellum, coleoptile, coleorhiza and epiblast are part of ---------------- . (a)Dicot embryo, b)Grass embryo, c)Castor seed, d)bean seed)
Last Answer : b)Grass embryo,
Description : Can Arduino be used for building a smart hydroponics system?
Last Answer : Yes, Arduino can be used for building a smart hydroponics system by using sensors to measure various parameters such as water quality, pH, and nutrient levels, and by using actuators to ... systems, and by using communication modules to transmit data to a control system to optimize hydroponics.
Description : What do you know about hydroponic nutrients, and hydroponics in general?
Last Answer : Maybe it needs longer to get over the shock of the transplant?
Description : Whats the best indoor grow lights for hydroponics?
Last Answer : What do you plan to grow with said hydroponics? An herb?
Description : What is hydroponics farming? -Biology
Description : What are the advantages and disadvantages of hydroponics farming? -Biology
Description : Can we grow higher plants through Hydroponics? -Biology
Description : What do you mean by Hydroponics?
Last Answer : Answer: Plant growth in liquid culture medium.
Description : Hydroponics is growing plants in
Last Answer : Hydroponics is growing plants in A. Laboratory B. Phytotron C. Liquid culture medium D. Solid culture medium
Description : $ The phenomenon of soil-less culture of plants is called Hydroponics. ! Donnan equilibrium is due to fixed ions in the cells
Last Answer : $ The phenomenon of soil-less culture of plants is called Hydroponics. ! Donnan equilibrium is due to fixed ... wrong D. If both As and R are wrong.
Description : Why do we use hydroponics?
Last Answer : Need answer
Description : Why does hydroponics need oxygen?
Description : Why is the term ‘hydroponics’ used?
Last Answer : – To describe cultivation of plants in water
Description : A large number of identical plants can be obtained in a short span of time through - (1) large number of seeds of a single plant (2) stern cuttings (3) tissue culture technique (4) hydroponics method
Last Answer : (3) tissue culture technique Explanation: Plant tissue culture is a collection of techniques used to maintain or grow plant cells, tissues or organs under sterile conditions on a nutrient culture medium ... hormones, which causes the plant part to grow at very rapid rates to produce new plantlets.
Description : Hydroponics is a method of culture of plants without using – (1) water (2) light (3) sand (4) soil
Last Answer : (4) soil Explanation: Hydroponics is a method of growing plants using mineral nutrient solutions, in water, without soil. Plants are grown with their roots in the mineral nutrient solution only or in an inert medium, such as perlite, gravel, mineral wool, expanded clay pebbles or coconut husk.
Description : Soilless agriculture refers to - (1) Hydroponics (2) Hygroponies (3) Sericulture (4) Inter-cropping
Last Answer : (1) Hydroponics Explanation: Hydroponics is a subset of hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their ... in an inert medium, such as perlite or gravel. Hydroponics is a subset of soilless culture.
Description : Give reason: hydroponics and aeroponics methods are important for space research organisations
Last Answer : Hydroponics and aeroponics methods are significant for space research organizations in developing special kind of food for astronauts. Mist is easier to handle in zero gravity situations than liquids in zero gravity situations.
Description : What is the disadvantage of growing plants by hydroponics?
Last Answer : The main disadvantage growing plats by hydroponics is that it leads to rapid plant death.