Please answer the question
1. Do human also help in seed dispersal ? How? Give example
2. How do animals help in seed dispersal?
3.Why is treatment injection necessary for you when you fall?
4 Give reason
a)seed of chodelions have hair on them
Answers
What is dispersal?
The movement of seed from one place to other this called dispersal of seeds.
1) Yes humans helps in dispersal. Humans eat various fruits and vegetables and throw their seeds after eating. These seeds when get adequate condition for germination, grows to become plants. In this way humans help in seed dispersal.
2) Animals eats seeds along with fruits. The seeds they eat are not digested at all. The seeds come out in the form of faeces(water material of the body). Since animals move from one place to another, the seeds in their stomach also goes. When they excrete, the seeds come out and thus they are dispersed from the original place.
3) When we fall, the bacteria near the ground, can enter in our body through the breath we take in. They can harm our body so treatment injections are necessary
4) The hairs on the seed of chodelions help them in dispersal by wind. Being lighter due to hairs, they are carried away by wind and thus they are dispersed.
Hope you understand
Answer: The movement, spreading, or transportation of seeds away from the parent plant is known as seed dispersal. Because of their restricted mobility, plants rely on a range of dispersal vectors, including both living (biotic) vectors like birds and abiotic vectors like the wind, to spread their seeds. Individual or collective seeds may be scattered away from the parent plant, and they may also be dispersed both in space and time.
Explanation:
Answer of the mentioned questions are as follows:
1. Based on the technology means of human transportation, recent study has shown that human dispersers vary from animal dispersers by having a significantly higher mobility.
On the one hand, human migration also affects existing biological communities' behaviour at smaller, regional scales. However, human dispersal may have a significant regional impact and promote the spread of invasive species.
Seeds can be dispersed by humans using a wide range of methods, and some unexpectedly long distances have been consistently measured.
Examples include dissemination on clothing (up to 250 m), on shoes (up to 5 km),and by autos (often 250 m, isolated cases > 100 km).
2. When animals eat seeds, one of the ways they can spread seeds is by doing so. This typically occurs with plants that produce fruit, when the animal is lured into eating the seeds by the tasty fruit. It carries out its duties and then excretes the seeds in another area where they can flourish. Berries, like raspberries, are the most typical examples.
Other seeds feature hooks that can cling to an animal's fur or skin. When animals pass by the plant and capture the seeds, the seeds subsequently fall off and land in a different location where they can thrive.
3. Treatment injection is necessary when we fall because there are lot of bacterias which may come in contact through our blood which may be harmful for our body. It can cause severe infection.
4. The hair bristles on chodelion seeds aid in their wind-borne dissemination. They are spread because the wind carries them away because they are lighter because of their hairs.
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