Even in absence of pollinating agents

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August undefined, 2024

WebA pollinating agent is one which helps in carrying out pollination in flowers i.e., the transfer of pollen grains of the flower from the anther to the stigma. Pollinating agents can be numerous ranging from biotic to abiotic factors such as animals, birds, insects, wind, water, etc. Pollination is a crucial step in the reproductive cycle of a plant.In Commelina … WebEven in the absence of pollinating agents seed-setting is assured ina)... It is because plants like Viola, oxalis and Commelina produce 2 types of flowers - Chasmogamous and Cleistogamous. Cleistogamous flowers do not have well exposed anthers and stigma. In such flowers, only self pollination takes place.

even in absence of pollinating agent seed -setting is assured in …

Web21 Even in absence of pollinating agents seed-setting is assured in 1 Salvia. 2 Fig. 3 Commelina. 4 Zostera. View Answer Answer: Commelina 22 What is the function of germ pore? 1 Initiation of pollen tube. 2 Absorption of water for seed germination. 3 Emergence of radicle. 4 Release of male gametes. WebCross-pollination occurs when pollen is transferred from the anthers of one flower to the stigma of another flower. Self-pollination occurs when the pollen from the anther of a flower is transferred to the stigma of the same flower. Cross-pollination is … gold beach municipal court

Even in absence of pollinating agents seed-setting is …

Webeven in absence of pollinating agent seed -setting is assured in (1) salvia (2) fig (3) commenlia (4) zostera for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. WebEven in absence of pollinating agents seed-setting is assured in Commellina Zostera Salvia Salvia A. Commellina Commellina benghalensis or kankauoa bears aerial, chasmogamous (stigma and anthers exposed to pollinating agents), insect pollinated flowers and underground cleistogamous flowers. WebAdaptations for Water Pollination: Water pollination is also termed as hydrophily and mode of pollination is water. It is quite rare in flowering plants and is limited to about 30 … hbomax customer

Types of Pollination: Self-Pollination & Cross-Pollination …

WebThe correct option is C Commelina. Commelina has cleistogamous flowers i.e. flowers that do not open. Hence these flowers are pollinated from within (autogamy) and do not … WebMar 4, 2024 · It increases the possibility of fertilisation as it can occur even in closed flowers. Pollination can occur even in the absence of any external aid. Disadvantages of Self-Pollination. The immunity of these … hbo max customer service hoursWebWind is another good agent of pollination. Examples of wind-pollinated flowers are corn, rice, and grasses. Wind-pollinated flowers have the following characteristics: Most of them do not have petals. Their stamens and stigmas are exposed to the wind. The stigma is feathery or sticky. Pollen grains stick to it easily. gold beach motel

"WebJul 3, 2024 · Even in absence of pollinating agents seed-setting is assured in. asked Apr 19, 2024 in Biology by aryam (121k points) class-12; no-idea; 0 votes. 1 answer. प्रक्कथन : चेस्मोगैमस पुष्यों में परागण एजेन्ट (pollinating agents) की आवश्यकता ... " - Even in absence of pollinating agents

Even in absence of pollinating agents

WebPollinating agents can be numerous ranging from biotic to abiotic factors such as animals, birds, insects, wind, water, etc. Pollination is a crucial step in the reproductive cycle of a … WebEven in absence of pollinating agents seed-setting is assured in. A Commelina B Zostera C Salvia D Fig Medium Solution Verified by Toppr Correct option is A) Commelina bears …

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WebMar 30, 2024 · Delineating quiescence and dormancy. Quiescence (noun) is a labile state of a cell, embryonic or meristematic structure, where division of the cell or cell population is repressed by non-cell-autonomous processes. Cell division may not have ceased or stalled, and evidence suggests that mitosis continues even in stem cell populations. WebThese flowers undergo self-pollination. Explanation of incorrect option: Option A: Pollination in Zostera occurs with the help of water. Option C: In Salvia, insects are the …

WebClick here👆to get an answer to your question ️ Even in the absence of pollinators, assured seed set will be there in ... the flowers remain closed even after reaching maturity. So, self pollination becomes mandatory and is independent of the agents of pollination, giving rise to seeds. So, the correct answer is, ' Cleistogamous flowers ... WebMar 3, 2024 · pollination, transfer of pollen grains from the stamens, the flower parts that produce them, to the ovule-bearing organs or to the ovules (seed precursors) …

WebMar 3, 2024 · pollination, transfer of pollen grains from the stamens, the flower parts that produce them, to the ovule-bearing organs or to the ovules (seed precursors) themselves. In plants such as conifers and cycads, in which the ovules are exposed, the pollen is simply caught in a drop of fluid secreted by the ovule. In flowering plants, however, the ovules … WebJul 17, 2024 · When the pollen of a flower is transferred to the stigma of another flower on the same plant, the process is known as (a) autogamy (b) geitonogamy (c) xenogamy (d) cleistogamy Answer 6. The number of meiotic divisions, required to produce 400 seeds in a pea plant, is (a) 100 (b) 200 (c) 400 (d) 500 Answer 7.

WebPollination is a part of the reproduction occurring in flowering plants. Sexual reproduction is incomplete without fertilization. Further development occurs only when the male and female gametes meet for fertilization. Plants can reproduce sexually, or by the generation of seeds, to create progeny.

WebMar 15, 2024 · When anthers dehisce in the flower buds, pollen grains come in contact with the stigma to effect pollination. Thus, cleistogamous flowers are invariably autogamous … hbo max customer services numberWebThe pollen from anther lobe fall on the stigma of the same flower and thus, pollination is not dependent on any external agency i.e. pollinators. D. Zostera is a marine grass which is … gold beach mobile homes for saleWebMajority of flowering plants use a range of animals as pollinating agents. Bees, butterflies, flies, beetles, wasps, ants, moths, birds (sunbirds and humming birds) and bats are the common pollinating agents. (Figure 2.11b). Among the animals, insects, particularly bees are the dominant biotic pollinating agents. gold beach muni airportWebJul 15, 2024 · Q.4. Assertion : Chasmogamous flowers require pollinating agents. Reason : Cleistogamous flowers do not expose their sex organs. Answer Answer: (b) The majority of angiosperms bear chasmogamous flowers, which means the flowers expose their mature anthers and stigma to the pollinating agents. There is another group of plants which set … hbo max customer service support numberWebCommelina bears aerial, chasmogamous (stigma and anthers exposed to pollinating agents), insect pollinated flowers and underground cleistogamous flowers. Cleistogamous flowers are bisexual flowers which never open. In such flowers, the anther and stigma lie very close to each other. gold beach municipal airportWeb1. It is necessary for cross-breeding and to prevent pollination by unwanted species in plant breeding. 2. Commercially superior hybrid varieties can be obtained by cross pollination … hbo max customer numberWebEven in absence of pollinating agents seed-setting is assured in A Salvia B Fig C Commelina D Zostera Medium Solution Verified by Toppr Correct option is C) A. Salvia is pollinated by insects by the turn pipe mechanism. B. Fig is pollinated by a wasp. The wasp lays egg in the fig fruits and in turn fig is pollinated. hbomax customer service telephone number