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 : 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 : 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 : 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 : 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 : What part of the flower contains the pollen? a) Anther b) Stigma c) Leaves d) Stem
Last Answer : a) Anther
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 : The transfer of pollen grains from the an- ther to the stigma is called?
Last Answer : pollination
Description : When pollen grains from an another falls on receptive stigma of the same flowers
Last Answer : Ans. Self pollination
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 : When pollen is transferred from the anther to the stigma? -Biology
Last Answer : answer:
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 : 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 : 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.
Last Answer : Anther
Description : When pollen grains are transferred to the stigma? -Biology
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 : When pollen grains from flower of one plant transferred to receptive stigmas of flowers of another plant
Last Answer : Ans. Cross pollination/Allogamy
Description : What happens after pollen lands on the stigma of a flower?
Last Answer : Feel Free to Answer
Description : The process involving emasculation of the flower before anthesis and depositing pollen grains on the cut end of the ovary is called as
Last Answer : The process involving emasculation of the flower before anthesis and depositing pollen grains on the cut end of the ovary is called as – Intra-ovarian pollination
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 : Which of the following are the important floral rewards to the animal pollinators ? (a) Floral fragrance and calcium crystals (b) Protein pellicle and stigmatic exudates (c) Colour and large size of flower (d) Nectar and pollen grains
Last Answer : (d) Nectar and pollen grains
Description : Geitonogamy involves (a) fertilisation of a flower by the pollen from another flower of the same plant (b) fertilisation of a flower by the pollen from the same flower (c) fertilisation of a flower ... of a flower by the pollen from a flower of another plant belonging to a distant population.
Last Answer : (a) fertilisation of a flower by the pollen from another flower of the same plant
Description : Geitonogamy involves:a)Fertilization of a flower by the pollen from a flower of another plant belonging to a distant population.b)Fertilization of a flower by the pollen from another flower of the same ... flower by the pollen from a flower of another plant in the same population
Last Answer : b)Fertilization of a flower by the pollen from another flower of the same plant
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 : 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 : 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 : 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 : 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 : In which one of thefollowing pollination is autogamous?a) Geitonogamyb) Xenogamyc) Chasmogamyd) Cleistogamy
Last Answer : ) Cleistogamy
Description : Effect of pollen grains on the properties of endosperms is called as
Last Answer : Effect of pollen grains on the properties of endosperms is called as – Xenia
Description : Formation of 8-nucleate embryosac by pollen grains is also called as
Last Answer : Formation of 8-nucleate embryosac by pollen grains is also called as – Nemec phenomenon
Description : Pollen from a flower of one plant falls on the stigmas of other flowers of the same plant.
Last Answer : Ans. Geitonogamy
Description : What are pollen grains? -Biology
Description : Where are pollen grains produced? -Biology
Description : What do pollen grains contain? -Biology
Description : Why were at least twenty pollen grains needed for each sugar concentration?
Last Answer : Anything less and the sample size would be too small for reliable data
Description : What are the two ways in which pollen grains are scattered?
Last Answer : Pollen is scattered by the wind or by animals.
Description : In dicots the pollen-grains possess : (1) two germ pores (2) three germ pores (3) four germ pores (4) one germ pore
Last Answer : (2) three germ pores Explanation: Pollen grains of monocots have one opening, while pollen grains of dicots have three openings. Pollengrains can be monocolpate (having one germ pore called germinal furrow e.g., monocots), bicolpate (2 germ pores) and tricolpate (3 germ pores e.g., dicots).