sexual reproduction in flowering plants
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sexual reproduction in flowering plants - Marcador
sexual reproduction in flowering plants - Detalles
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| 🇬🇧 | 🇬🇧 |
| Asexual reproduction is also called as | Self fertilization |
| Xenia refers to | Effect of pollen on endosperm |
| Double fertilization involves | Fertilization of egg and the central cell by two sperms brought by the same pollen tube |
| Apomixis is | Formation of seeds with syngamy but no meiosis |
| Chasmogamy refers to the condition where | Flowers are open |
| Geitonogamy involves | Fertilization of a flower by the pollen from another flower of the same plant |
| Sporopollenin can withstand | High temperature as well as strong acids and alkalis |
| Megaspore mother cell divides by meiosis and forms | A row of four haploid megaspores |
| A group of plants which set seeds without exposing heir sex organs. | Cleistogamous flowers |
| When embryo develops from a haploid cell of embryo sac, other than egg cell the process is known as | Apogamy |
| Which of the following occurs in an angiosperm ovule | A megaspore mother cell undergoes meiosis |
| Tapetum is | Parietal in origin usually the inner most layer of anther wall |
| Essential whorls of a flowers | Androecium and gynoecium |
| Endothecium, middle layer and tapetum in anther are derived from | Primary parietal layer |
| Crassinucellate ovule shows | Well developed nucellus |
| Where and by which process are sperm produced in plants | Mitosis in male gametophytes |
| Filiform apparatus are found in | Synergids |
| Raphe and hilum in seed represent | Funiculus |
| Micropyle in seed helps in the entry of | Water and air |
| Megasporophyll is called | Carpel |
| All of the following are features of angiosperms | In straight line with funiculum at 45 degree with funiculum at right angles with funiculum |
| In anatropous ovule , the micropyle is present | Side by side with funiculum |
| Which of the following types of embryo sac is mostly found in angiosperm | Monosporic- polygonum type |
| All the following floral parts are directly involved in pollination or fertilization except the | Sepal |
| Which of the following is the correct sequence of events in a pollen sac | Microsporocyte-meiosis- microspores- mitosis- two haploid cells per pollen grain |
| Helobial endosperm is restricted usually to | Order helobiales |
| What is the cause of long dormancy in seeds | Impermiable seed coat, presence of ABA/ferulic acid and undeveloped embryo |
| Low temperature induction of germination is called | Stratifiction |
| Unisexuality of flowers prevents | Autogamy, but not geitonogamy |