IB Biology Topic D3.1.10 Methods of Promoting Cross-pollination Revision Notes (SL/HL)

IB Biology Topic D3.1.10 Methods of Promoting Cross-pollination Revision Notes (SL/HL) | RevisionDojo

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Cross-Pollination Moves Pollen Between Plants to Boost Genetic Diversity

In a field of wildflowers, pollen must travel from one flower to another.
This cross-pollination moves pollen from the anther of one plant to the stigma of another plant of the same species.
Mixing genes from two parents produces offspring with more varied traits than self-pollination can.

Note

Cross-pollination mixes genetic material, so offspring inherit diverse traits.
Greater genetic diversity helps a population adapt to changing environments.
Offspring often show hybrid vigour, growing stronger and healthier than inbred plants.

Dichogamy Separates Male and Female Maturity in Time

Dichogamy means the anthers and stigma of one flower mature at different times, so a flower cannot easily pollinate itself.
Protandry: the anthers release pollen before the stigma of the same flower becomes receptive.
Protogyny: the stigma becomes receptive before the anthers of the same flower shed pollen.

Tip

Protandry means anthers first, protogyny means stigma first.

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Cross-Pollination Moves Pollen Between Plants to Boost Genetic Diversity

In a field of wildflowers, pollen must travel from one flower to another.
This cross-pollination moves pollen from the anther of one plant to the stigma of another plant of the same species.
Mixing genes from two parents produces offspring with more varied traits than self-pollination can.

Note

Cross-pollination mixes genetic material, so offspring inherit diverse traits.
Greater genetic diversity helps a population adapt to changing environments.
Offspring often show hybrid vigour, growing stronger and healthier than inbred plants.

Dichogamy Separates Male and Female Maturity in Time

Dichogamy means the anthers and stigma of one flower mature at different times, so a flower cannot easily pollinate itself.
Protandry: the anthers release pollen before the stigma of the same flower becomes receptive.
Protogyny: the stigma becomes receptive before the anthers of the same flower shed pollen.

Tip

Protandry means anthers first, protogyny means stigma first.

Definition

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Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic D3.1.10: Methods of Promoting Cross-pollination Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Cross-Pollination Moves Pollen Between Plants to Boost Genetic Diversity

Dichogamy Separates Male and Female Maturity in Time

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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Cross-Pollination Moves Pollen Between Plants to Boost Genetic Diversity

Dichogamy Separates Male and Female Maturity in Time

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account