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Topic 4: Biodiversity and Natural Resources
4.4 Plant Reproduction
4.4.2 Pollination
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What is the process of pollination in plants?
Transfer of pollen
Pollination involves the transfer of pollen from the
anther
to the stigma, enabling fertilization.
Steps involved in self-pollination
1️⃣ Pollen is released from the anther
2️⃣ Pollen is transferred to the stigma of the same plant
Steps involved in cross-pollination
1️⃣ Pollen is released from the anther
2️⃣ Pollen is transferred to the stigma of a different plant
Self-pollination results in high genetic variation in plants.
False
What is a major advantage of wind pollination for plants?
No reliance on pollinators
Plants adapted for wind pollination have small petals and no
fragrance
Wind pollination is highly efficient in transferring pollen.
False
Adaptations for water pollination
1️⃣ Light pollen to float on water
2️⃣ Reduced or absent petals
3️⃣ Specialized stigmas
What is water pollination also known as?
Hydrophily
Plants adapted for water pollination have light pollen to float on
water
Match the pollen carrier with the type of pollination:
Water ↔️ Hydrophily
Wind ↔️ Anemophily
Insects ↔️ Entomophily
Water pollination is highly efficient in transferring pollen.
False
What is a major advantage of water pollination for plants?
Works in aquatic environments
What is the term for water pollination?
Hydrophily
Water pollination involves the transfer of pollen from the
anther
to the stigma by water.
Plants adapted for hydrophily have light
pollen
to float on water.
What is the term for insect pollination?
Entomophily
Insect pollination relies on insects to transfer pollen from the anther to the
stigma
.
Large petals are an adaptation for
insect-pollinated
plants.
What is the term for bird pollination?
Ornithophily
Bird-pollinated plants have brightly colored petals to attract
birds
.
Bird-pollinated plants produce sweet fragrance to attract pollinators.
False
Define pollination.
Transfer of pollen
Pollination involves the transfer of pollen from the anther to the
stigma
.
Match the type of pollination with its characteristic:
Self-Pollination ↔️ Pollen transfer within the same flower
Cross-Pollination ↔️ Pollen transfer between different flowers
Self-pollination involves the transfer of
pollen
within the same flower.
What is the primary drawback of cross-pollination?
Reliance on external agents
What is pollination in plants?
Transfer of pollen
There are two primary types of pollination: self-pollination and cross-
pollination
Match the pollination type with its pollen source:
Self-Pollination ↔️ Same plant
Cross-Pollination ↔️ Different plant
Where does pollen transfer occur in self-pollination?
Same plant
Cross-pollination results in high
genetic variation
.
Wind pollination is also known as
anemophily
What is a major disadvantage of wind pollination?
Inefficient pollen use
Plants adapted for water pollination have light
pollen
to float on water.
Match the pollination method with its primary feature:
Hydrophily ↔️ Light pollen
Anemophily ↔️ Feathery stigmas
Entomophily ↔️ Sweet fragrance
What type of stigma do insect-pollinated flowers have?
Sticky
Insect pollination is also called
entomophily
Insect-pollinated flowers produce
nectar
to attract pollinators.
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