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17 Cards in this Set
- Front
- Back
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What are the advantages of Sexual Reproduction? |
1. Variation in offspring due to crossing over and individual assortment (allows to adapt to a changing environment) 2. Plants aren't competing for nutrients as they can be dispersed 3. The species have the opportunity to colonise new habitats |
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What are the disadvantages of Sexual Reproduction? |
1. Requires lots of time and resources producing sexual organs, attracting pollinators and the pollination and fertilisation process 2. Requires two parents 3. The young plants aren't supported by parent plants |
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What are the advantages of Asexual Reproduction? |
1.Requires one parent 2. Reproduces faster and so, they are good at colonising in favourable environments 3. No time or resources are used creating attractive pollinators 4. Reduces other species competition by growing around the parent plant 5. Maintains favourable characteristics |
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What are the disadvantages of Asexual Reproduction? |
1. More likely to be wiped out if environment change due to no genetic variation 2. Rapid reproduction causes competition for resources 3. Seeds aren't dispersed away from parent plant, causing competition for resources |
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How are sexually reproducing plants pollinated? |
1. Cross Pollination (Wind or Animal) 2. Self Pollination |
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Why is Cross Pollination better? |
Allows for more variation within a species |
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What is Self-Pollination? |
Where the pollen of one flower is spread to that same flower's own female organs. |
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What is Cross-Pollination? |
Where the pollen of one flower is spread to a different flower's (same species) female organ via animal or wind. |
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What are some adaptations of the pollen of some wind - pollinated plants? |
- Smooth - Lightweight - Smol - Wings - Fine Hairs |
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What are some adaptations of the pollen of some animal - pollinated plants? |
- Spiky - Hooked |
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What are the three main methods of seed dispersal? |
- Animals - Wind - Water |
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What are the disadvantages to water seed dispersal? |
- May rot from water exposure - May never reach land - May end up next to parent - High energy to produce water-resistant seed - Can drift into unfavourable areas for plant - Relies on an external source |
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What are the advantages of water seed dispersal? |
- They can travel a wide area, therefore far away from parent plant - Can drift into favourable areas for plant - Can grow on new land and increase population |
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What are the disadvantages of animal seed dispersal? |
- Dependent on outside source - Creation of seed is a high energy cost - Creation of features to attract animals (scent, flowers, fruit) |
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What are the advantages of animal seed dispersal? |
- Seed is guaranteed to be away from parent - Less energy required to make a fruit or flower (if a hooked seed) |
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What are the advantages of wind seed dispersal? |
- Seed can be transported far from parent plant - No energy required to create attractive features |
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What are the disadvantages of wind seed dispersal? |
- The seed could not be transported very far away from parent plant (Unreliable transport mode) - Dependant on an outside source - Most seeds are small and therefore have a very small energy reserve |
