Occasionally, the pollen from a flower can land on its own stigma or on the stigma of another flower on the same plant - this is known as self-pollination

Which of the following plants almost exclusively self-pollinate through the mechanism of autogamy whereby pollen is transferred to the stigma of the same flowerQuestion 9Select one:a.maizeb.wheatc.sunflowerd.applee.peach

Pollinating agentsThe pollen-pistil interaction begins with pollination, followed by pollen adhesion to the stigma.After it adheres, it imbibes water and gets hydrated which initiates pollen tube germination.There are different agents of pollination like wind, insects, birds and water.Anemophilous flowers are pollinated by the agency of wind. These flowers are small andinconspicuous.. The pollen grains are very light, non-sticky and sometimes winged.Entomophilic flowers are pollinated by insects. These flowers are often attractive to look at withbright petals and are fragrant to attract the insect visitors to them. They often have broadstigmas or anthers to allow the insect to perch on it. Many of the insect-pollinated flowers alsosecrete nectar which attracts bees, butterflies or other similar insects to the flowers. The pollengrain surface of such flowers produce mucilaginous secretion.Hydrophilic flowers are pollinated by water. It is commonly found in algae, bryophytes,pteridophytes and some angiosperms. The pollen grains may have a mucilaginous covering toprotect it from getting wet.i The pollinating agent of an inflorescence of small dull coloured flowers with well exposedstamens and large feathery stigma isa. Water b. Wind c. Insects d. Birds.ii An example of biotic agent for pollination isa. Air b. Water c. Honey bee d. All of the aboveiii The pollen grains in the flowers are generally sticky that help them toa. stick on to the body of the insects b. float on waterc. float in the air d. fall on the ground safely.iv Which of the following statements seem to describe the water-pollinated submerged plants?a. The flowers do not produce nectar.b. The flower petals are not brightly coloured.c. The pollen grains have mucilaginous covering.d. The female flowers have long stalk to reach the surface.ORAssertion: The pollen grains are easily carried by the wind.Reason: They are very light and sometimes winged.a. Both assertion and reason are true, and the reason is the correct explanation of the assertion.b. Both assertion and reason are true, but the reason is not the correct explanation of theassertion .c. Assertion is true but the reason is false.d. Both assertion and reason are false

Explain why the process of fertilisation is the same for self-pollinating flowers and cross-pollinating flowers.

Name the pollinating agent of a flowering plant with large and coloured flowers withsticky stigma. State one characteristic feature of the pollen grains produced in suchflowers.

12The researchers are fascinated with the structure and shape of bee stigmas, the feminine organs responsible for harvesting and transmitting pollen. Aware of the bees' pivotal role in plant reproduction, they seek to decode how the distinct traits of bee stigmas enhance their competence in pollination. The hypothesis put forward by the researchers suggests that extended bee stigmas enhance the efficiency of bees in amassing and disseminating pollen. They initiated an extensive investigation comparing diverse bee species boasting different stigma configurations to substantiate their proposition. The researchers meticulously examined the volume of pollen clinging to the stigmas post the bees' visitation to specific plant species.12 Mark For Review12Which finding, if true, would most directly support the researcher’s hypothesis?A) Pollen from a particular flower species was transferred more effectively by local bees compared to other floral types.B) The extended stigmas tend to fracture more effortlessly than the shorter ones due to a heightened moment of inertia.C) Bees possessing stigmas with reduced and more readily accessible structures exhibit a significantly augmented pollen load compared to bees with protracted stigmas.D) Bees with stigmas with elongated, branched, and complexly folded configurations demonstrate a considerably increased pollen haul compared to bees with simpler, abbreviated stigmas.