Description : Haploid plants can be obtained from: (a) Leaf culture (b) Bud culture (c) Root culture (d) Anther culture
Last Answer : Ans. ((d))
Description : why sterile tissues degenerate in anther during the maturation of pollen grain -Biology
Last Answer : answer:
Description : When pollen is transferred from the anther to the stigma? -Biology
Description : Consider the following statements about pollination. 1. Transfer of pollen grains from the anther to ovules in the same flower or a different f lower is called pollination. 2. The pollination by wind is called anemophily. 3. Pollination is a ... 1 and 3 (b) 1, 2 and 4 (c) Only 2 (d) 1, 2, 3 and 4
Last Answer : Ans:(c)
Description : The floral part that produces pollen grains is (1) Sepal (2) Petal (3) Anther (4) Ovary
Last Answer : (3) Anther Explanation: The anther contains microsporangia. Each microsporangium contains pollen mother cells. These undergo meiosis, and produce pollen grains, which contain the male gametes (sperm). The pollen is released by the opening of the anther.
Description : The floral part that produces pollen grains is - (1 ) Sepal (2) Petal (3) Anther (4) Ovary
Last Answer : (3) Anther Explanation: Anther is the apical portion of a stamen, which produces the microspores or pollen grains. An anther normally comprises four pollen sacs arranged in two groups or lobes joined by the connective tissue to the filament
Description : Which ones produce androgenic haploids in anther cultures? (a) Anther wall (b) Tapetal layer of anther wall (c) Connective tissue (d) Young pollen grains
Last Answer : (d) Young pollen grains
Description : Male gametophyte of angiosperms is shed at (a) four celled pollen grain (b) three celled pollen grain (c) microspore mother cell (d) anther.
Last Answer : b) three celled pollen grain
Description : Anthesis is a phenomenon which refers to (a) reception of pollen by stigma (b) formation of pollen (c) development of anther (d) opening of flower bud.
Last Answer : (d) opening of flower bud.
Description : Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called (a) xenogamy (b) geitonogamy (c) karyogamy (d) autogamy.
Last Answer : (b) geitonogamy
Description : Which one of the following statements is not true? (a) Pollen grains of many species cause severe allergies. (b) Stored pollen in liquid nitrogen can be used in the crop breeding programmes. (c) Tapetum helps in the dehiscence of anther. (d) Exine of pollen grains is made up of sporopollenin.
Last Answer : (c) Tapetum helps in the dehiscence of anther.
Description : The plant parts which consist of two generations- one within the other (1) pollen grains inside the anther (2) germinated pollen grain with two male gametes (3) seed inside the fruit (4) embryo sac inside the ovule (a) (1) only (b) (1), (2), and (3) (c) (3) and (4)
Last Answer : (d) (1) and (4).
Description : What part of the flower contains the pollen? a) Anther b) Stigma c) Leaves d) Stem
Last Answer : a) Anther
Description : The transfer of pollen grains from anther to stigma is called; a) Fertilization b) pollination c) Microsporogenesis d) Polyembryony
Last Answer : Ans. b) Pollination
Description : Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called:a) Autogamyb) Xenogamyc) Geitonogamyd) Karyogamy
Last Answer : c) Geitonogamy
Description : The part of the flower that is adapted to catch pollen is the: a) stigma b) style c) anther d) ovule
Last Answer : ANSWER: A -- STIGMA
Description : In flowers the terminal part of a stamen, containing the pollen sacs is known as the: a) anther b) style c) filament d) pistil
Last Answer : ANSWER: A -- Anther
Last Answer : Anther
Description : In order to obtain virus-free plants through tissue culture the best method is (a) meristem culture (b) protoplast culture (c) embryo rescue (d) anther culture.
Last Answer : (a) meristem culture
Description : To obtain haploid plants, we culture _________ e. Entire anther f. Nucleus g. Embryo h. Apical bud
Last Answer : e. Entire anther
Description : Culture spreads from one place to anther and such transmission is called as ________. A. difference. B. reputation. C. adoption. D. heritage.
Last Answer : A. difference.
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 : 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) stem cuttings (3) tissue culture technique (4) hydroponics method
Last Answer : tissue culture technique
Description : When pollen sterility is caused by cytoplasmic genes
Last Answer : Ans. Cytoplasmic Male Sterility (CMS)
Description : A condition in which either pollen is absent or non functional in flowering plants.
Last Answer : Ans. Male Sterility
Description : Removal of the entire tassel (male inflorescence of maize) from the plant before pollen to initiate cross hybridization
Last Answer : Ans. Detasseling
Description : Pollen from a flower of one plant falls on the stigmas of other flowers of the same plant.
Last Answer : Ans. Geitonogamy
Description : When pollen grains from flower of one plant transferred to receptive stigmas of flowers of another plant
Last Answer : Ans. Cross pollination/Allogamy
Description : When pollen grains from an another falls on receptive stigma of the same flowers
Last Answer : Ans. Self pollination
Description : Polyploidy level of testa and pollen mother cell of seed
Last Answer : Ans. 2n
Description : In hybridization this is not part of the technique used a) Transfer pollen b) Collect pollen c) Emasculate d) Use of two plants to bridge the stems together
Last Answer : d) Use of two plants to bridge the stems together
Description : In tissue culture medium, the embryoids formed from pollen grains is due to (a) cellular totipotency (b) organogenesis (c) double fertilization (d) test tube culture.
Last Answer : (a) cellular totipotency
Description : The technique of reducing the size of replication over a number of blocks at the cost of loosing some informations on same effect
Last Answer : Ans. Confounding Design
Description : Culture of an organ in vitro
Last Answer : Ans. Organ culture
Description : A culture of isolated mature or immature embryos
Last Answer : Ans. Meristem culture
Description : General used nutrient medium in tissue culture
Last Answer : Ans. B-5 medium and MS medium
Description : Rhizobium japonicum culture is applied for crops
Last Answer : Ans. Soybean and Groundnut
Description : A figure obtained by dividing the sum of all variable by their total number of variables.
Last Answer : Ans. Averages/Arithmetic Mean
Description : Optimum profit will be obtained at a point where
Last Answer : Ans. MC = MP
Description : Under perfect competition market, maximum profit is obtained when
Last Answer : Ans. Marginal Return = Marginal Cost
Description : Progeny of a single plant, obtained by asexual reproduction
Last Answer : Ans. Clone
Description : What is bagging technique in plant tissue culture? -Biology
Description : Tissue culture technique was first attempted by
Last Answer : Tissue culture technique was first attempted by A. Haberlandt B. Nonbecourt C. Hanning D. Gautheret
Description : The technique of obtaining large number plantlets by tissue culture method is called
Last Answer : The technique of obtaining large number plantlets by tissue culture method is called A. ... . organ culture C. micropropagation D. macropropagation
Description : The technique of obtaining large number of plantlets by tissue culture method is called (a) plantlet culture (b) organ culture (c) micropropagation (d) macropropagation.
Last Answer : (c) micropropagation
Description : Tissue culture technique can produce infinite number of new plants from a small parental tissue. The economic importance of the technique is in raising (a) genetically uniform population ... homozygous diploid plants (c) new species (d) variants through picking up somaclonal variations.
Last Answer : (a) genetically uniform population identical to the original parent
Description : To obtain virus - free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken? (a) Apical meristem only (b) Palisade parenchyma (c) Both apical and axillary meristems (d) Epidermis only
Last Answer : (c) Both apical and axillary meristems
Description : one way to get a pure culture is by using _____. a. Aseptic technique b. Pour-plate method c. Streak-plate method d. A and C e. B and C
Last Answer : d. A and C
Description : Tissue culture is a good technique to a) Cross two varieties b) Rapidly increase the size of a trees by strengthening the stem c) Eliminate virus d) Improve yield of crops
Last Answer : c) Eliminate virus