Answer:
c. Unusually high migration variance Individuals that are very successful at migrating to new populations, but cannot mate in the new locations.
Explanation:
Gene flow refers to the movement of alleles between the local populations when individuals form a population migrate into the other population. Gene flow can occur only if the migrated individuals mate successfully with the individuals of the other population. This would add new alleles from immigrant individuals to the gene pool of the population leading to evolution.
If the immigration is not followed by the mating of the immigrants with individuals of the local population, there would not be any addition of new alleles to the gene pool and the population would not exhibit evolution by gene flow.
Many plants have modified stems that serve various purposes, including storage, protection, photosynthesis, support, propagation, and perennial growth.
<h3>What are the functions of modified stems, and explain them with examples?</h3>
Underground Stem Modifications:
- These can be found underground, as their name suggests. They have a variety of uses, including food storage, reproduction, and perpetuation. By having nodes and internodes, they may be distinguished from roots. They support asexual reproduction and the plant's ability to endure a period of hibernation. They offer a defense against animal grazing and environmental stress.
- Rhizome: It runs parallel to the ground, and its lower portion, capable of producing adventitious roots, can also generate scaly leaves. They have internodes, buds, and nodes. Examples: Turmeric and ginger. The rootstock in bananas is a rhizome that develops vertically.
- Bulb: Modified bulbs are visible, and the stem is shortened and ringed with scale leaves. Examples: Tulips, Lilies, Daffodils, Onion, Garlic
- Corm: A short erect stalk with scaly leaves covers it. When compared to bulbs, it is tough. Examples: Colocasia, Yam, Saffron
- Tuber: The fleshy, food-storing stem terminal is present in this instance. Nodes and internodes are present in the stem; however, they are not identifiable because of swelling. Scaly leaves present at nodes can be interpreted as eyes or scars. Examples: Potato, Artichokes.
Many plants have modified stems that serve various purposes, including storage, protection, photosynthesis, support, propagation, and perennial growth.
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Could you give more information? For the most part, the dependent variable is what you’re recording. For example, if you wanted to see how plants would grow in different conditions, plant height would be the dependent variable. The height DEPENDS on the condition it was grown in. Hope this helps!
The food web contains more biodiversity
Hope this helps
