Can a plant flowering in Mumbai be polli...

Can a plant flowering in Mumbai be pollinated by pollen grains of the same species growing in New Delhi ? Provide explanations has successfully occurred . Label the parts involved in reaching the male gametes to its desired destination.

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(a) Yes , it can be done by artificial pollination . In this process , emasculation (removal of stamens) is done to prevent self - pollination . Latter , the emasculated flower is pollinated with the pollens of flower of interest.
(b)

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Draw a longitudinal section of the pistil from a flowering plant, where pollination has occurred. Label the following: (a) Stigma showing germinating pollen grains (b) Style (c) Pollen tube reaching the micropyle of the ovule (d) Embryo sac (e) Components of the egg apparatus

Read the following statements and find out the incorrect statements. a. In majority of organisms, male gamete is motile and female gamete is non-motile (stationary). b. In algae and fingi, both male and femla egaetes are non-motile. c. In seed plants, pollen grains are the carrier of male gaemtes and ovule has the egg. d. In dioecious plants, pollination facilitates trasnfer of pollen grains to the stigma. e. In monoecious animals, since male and female gametes are formed in different individuals, the organism must evolve special mechanism for gamete transfer.

Consider the following statements with respect to the flowering plants and choose the correct option (a) Pollen grains represent the male gametes (b) Functional megaspore develops innto embryo sac that represents the female gamete (c) Transfer of pollen grains from anther to stigma of different plant is known as xenogamy (d) Transfer of pollen grains from anther to stigma of another flower of the same plant is known as geitonogamy

A flower of tomato plant following the process of sexual reproduction produces 240 viable seeds. Answser the following questions giving reasons : (a) What is the minimum number of pollen grains that must have been involved in the pollination of its pistil ? (b) What would have been the minimum number of ovules present in the ovary ? (c) How many megaspore mother cells were involved ? (d) what is the minimum number of microspore mother cells involved in the above case ? (e) How many male gametes were involved in this case ?

Read the following text and answer the following questions on the basis of the same: A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings. Select the odd one out with respect to wall layers of microsporangium in flowering plants.

A flower of brinjal plant, following the process of sexual reproduction , produces 360 viable seeds. Answer the following questions giving reasons: (a) How many ovules are minimally involved ? (b) How many megaspore mother cells are involved ? (c ) What is the minimum no. of pollen grains that must land on stigma for pollination ? (d) How many male gametes are involved in the above case ? (e ) How many microspore mother cells must have undergone reduction division prior to dehiscence of anther in the above case ?

Read the following statement and answer the questions that follows: "A guava fruit has 200 viable seeds.". a) What are viable seeds? b) Write the total number of: i) Pollen grains , ii) Gametes in producing 200 viable guava seeds. c) Prepare a flow-chart to depict the post-pollination events leading to viablle-seed production in a flowering plant.

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