Description : What part of the flower contains the pollen? a) Anther b) Stigma c) Leaves d) Stem
Last Answer : a) Anther
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 : 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 : Which of the following statements is not correct? (a) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil. (b) ... Insects that consume pollen or nectar without bringing about pollination are called pollen/ nectar robbers.
Last Answer : (c) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
Description : When pollen is transferred from the anther to the stigma? -Biology
Last Answer : answer:
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 : 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 : 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
Description : 8. Embryo sac is located inside the 1. Stigma 2. Ovule 3. Micropyle 4. Style
Last Answer : Ans: Ovule
Description : The floral part that receives pollen grains during pollination is - (1 ovary (2) style (3) stigma (4) ovules
Last Answer : (3) stigma Explanation: The stigma is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. The stigma receives pollen at pollination and it is on the stigma that the pollen grain germinates. The style connects the stigma to the ovary.
Description : The floral part that receives pollen-grains during pollination is (1) ovary (2) style (3) stigma (4) ovules
Last Answer : stigma
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 : What happens after pollen lands on the stigma of a flower?
Last Answer : Feel Free to Answer
Description : When pollen of a flower is transferred to the stigma of another flower of the same plant, the pollination is referred to as (a) autogamy (b) geitonogamy (c) xenogamy (d) allogamy.
Last Answer : b) geitonogamy
Description : What scientific name is given to the central organ of the flower, typically consisting of a style, stigma, and ovary?
Last Answer : ANSWER: PISTIL
Description : When anther and stigma mature at different time, this phenomenon is called as
Last Answer : When anther and stigma mature at different time, this phenomenon is called as – Dichogamy
Description : n angiosperms, microsporogenesis and megasporo -genesis (a) involve meiosis (b) occur in ovule (c) occur in anther (d) form gametes without further divisions.
Last Answer : (a) involve meiosis
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
Last Answer : Anther
Description : Failure of a viable pollen to grow down the style of the flower of the same variety is called ___________: a. Self sterility b. Self incompatibility c. Self unfruitfulness d. Sterility
Last Answer : Self incompatibility
Description : why sterile tissues degenerate in anther during the maturation of pollen grain -Biology
Description : Anther or pollen culture technique is used to obtained
Last Answer : Ans. Haploid plants
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 : 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 : Edible part of mango and coconut is (a) Mesocarp, endocarp (b) Endocarp and mesocarp (c) Mesocarp and pericarp (d) Style and stigma
Last Answer : Ans:(a)
Description : When pollen grains are transferred to the stigma? -Biology
Description : When pollen grains from an another falls on receptive stigma of the same flowers
Last Answer : Ans. Self pollination
Description : The transfer of pollen grains from the an- ther to the stigma is called?
Last Answer : pollination
Description : Which one of the following statements is correct? (a) Cleistogamous flowers are always autogamous. (b) Xenogamy occurs only by wind pollination. (c) Chasmogamous flowers do not open at all. (d) Geitonogamy involves the pollen and stigma of flowers of different plants.
Last Answer : (a) Cleistogamous flowers are always autogamous.
Description : Function of filiform apparatus is to (a) recognise the suitable pollen at stigma (b) stimulate division of generative cell (c) produce nectar (d) guide the entry of pollen tube.
Last Answer : (d) guide the entry of pollen tube.
Description : 10. “Cleistogamous flowers are invariably autogamous because” (a) These flowers do not open at all. (b) There is no chance of cross – pollen landing on the stigma. (c) These flowers have exposed anthers and stigma. (d) These flowers are wind pollinated.
Last Answer : (a) These flowers do not open at all.
Description : Pollen tube attraction near ovule is facilitated by -Biology
Description : $ Fertilization with the help of a pollen tube is called Siphonogamy. ! Entry of pollen tube into the ovule through integuments is called Mesogamy.
Last Answer : $ Fertilization with the help of a pollen tube is called Siphonogamy. ! Entry of pollen tube into the ovule ... wrong D. If both As and R are wrong.
Description : When pollen connects with an ovule in the ovary?
Last Answer : What is the answer ?
Description : Metaxenia is the impact of a. Pollen on seed b. Pollen on fruit c. Pollen on ovule d. Pollen on ovary
Last Answer : Pollen on ovule
Description : What does the filiform apparatus do at the entrance into ovule? (a) It brings about opening of the pollen tube. (b) It guides pollen tube from a synergid to egg. (c) It helps in the entry of pollen tube into a synergid. (d) It prevents entry of more than one pollen tube into the embryo sac
Last Answer : (b) It guides pollen tube from a synergid to egg.
Description : In angiosperms, functional megaspore develops into (a) embryo sac (b) ovule (c) endosperm (d) pollen sac.
Last Answer : a) embryo sac
Description : In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the ... pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.
Last Answer : (c) the microsporangium in which pollen grains develop
Description : How are pollen grains adapted to help plant pollinations?
Last Answer : Some pollen grains have a spiky surface to help them sticky tothe bodies of insects.
Description : Which flower part develops from the ovule and is surrounded by the fruit?
Last Answer : C. seed
Description : Parienth is the fnion of a. Calyx and Corolla b. Pedicel and Thalamus c. Stamen and Stigma d. Style and Ovary
Last Answer : Calyx and Corolla
Description : Transmission tissue is characteristic feature of (a) dry stigma (b) wet stigma (c) hollow style (d) solid style
Last Answer : (d) solid style.
Description : Hair found in the inflorescence of Zea mays are the modification of (a) style (b) stigma (c) spathe (d) filaments.
Last Answer : (a) style
Description : Transmission tissue is characteristic feature of:a) Solid style b) Dry stigma c) Wet stigmad) Hollow style
Last Answer : a) Solid style