Transfer of pollen occurring in the same flower is known as \ \ \ \ \ \ .? - RRB Nsg. Superintendent-21 July 2019 (Shift-2nd)

RRB Nsg. Superintendent-21 July 2019 (Shift-2nd)

Non Nursing Subjects

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Appeared in: RRB Nsg. Superintendent-21 July 2019 (Shift-2nd)

Explanation

Self-pollination is the transfer of pollen grains from the anther to the stigma of the very same flower (a process called autogamy).
It can also refer to the transfer of pollen between different flowers on the same plant (a process called geitonogamy).
This mode of reproduction leads to offspring that are genetically identical to the parent plant, as there is no introduction of new genetic material.
It is an effective reproductive strategy for plants in environments where pollinators are scarce or unreliable.

Option A: Hybridization is the process of creating a hybrid organism by cross-breeding two genetically distinct individuals. It is a technique used in plant breeding, not a natural type of pollination.
Option B: Cross-pollination specifically refers to the transfer of pollen between flowers of two different plants of the same species. The question specifies the transfer occurs within the 'same flower'.
Option D: Fertilization is the fusion of male and female gametes to form a zygote. It is the process that happens after the pollen grain has landed on the stigma and its genetic material has reached the ovule. Pollination is the transfer of pollen, which precedes fertilization.

Visual 1: Diagram - An illustration comparing self-pollination and cross-pollination. One side shows pollen moving from the anther to the stigma within a single flower. The other side shows pollen being carried by a bee from a flower on one plant to a flower on a different plant.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Plant Reproduction: Types of Pollination as background academic context rather than a clinical decision trigger.
Understanding pollination types is crucial in agriculture and horticulture. Self-pollinating crops like peas, tomatoes, and beans can produce fruit without external help, making them reliable producers.
Cross-pollinating crops, such as apples, almonds, and cherries, depend on pollinators like bees. The decline in bee populations poses a significant threat to the production of these crops and global food security.
Plant breeders manipulate pollination to create new varieties. They may prevent self-pollination and manually perform cross-pollination to combine desirable traits from different parent plants.

How to Approach the Question

First, identify the key phrase in the question stem: 'transfer of pollen occurring in the same flower'.
Break down the phrase: 'Pollen transfer' is pollination. 'Same flower' specifies the location.
Evaluate the options based on this specific definition.
Option A, Hybridization, is about creating new varieties, not a type of pollen transfer.
Option B, Cross-pollination, involves different plants, which contradicts 'same flower'.
Option D, Fertilization, is the fusion of gametes, a process that occurs after pollination.

Concept Tested & Keywords

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