Virus disease do not generally spread through : -a)Vegetative propagationb)Seedsc)Graftingd)CuttingCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

The viral disease is caused due to infection of pathogenic virus that attacks the cells. Transmission of plant viruses is through the transfer of sap, insects, nematodes, plasmodiophorids, seed and pollen and direct plant to human transmission. However, the spread of virus does not take place through vegetative propagation. Thus, the correct answer is option B.

Answer

When a tree is affected by a virus deases, it can spread in it's saplings through vegetative reproduction. propagation, grafting, cutting these all r some types of reproduction. But seeds is not a part of vegetative reproduction. so d ans b is absolutely correct

Answer

A

Answer

B and c

Answer

Seed Transmission of Virus Diseases:
- Virus diseases do not generally spread through seeds because viruses are not able to infect seeds in the same way they infect vegetative parts of plants.
- Seeds are protected by a seed coat which acts as a barrier against virus entry.
- Furthermore, viruses are typically unable to survive the drying and storage conditions that seeds are subjected to.

Other Modes of Spread of Virus Diseases:
- Vegetative Propagation: Virus diseases can spread through vegetative propagation methods such as cuttings, tubers, and bulbs. This is because the virus can be present in the tissues of the plant used for propagation.
- Grafting: Virus diseases can also spread through grafting, where a scion (the shoot or bud of one plant) is attached to a rootstock (the root or stem of another plant). If either the scion or rootstock is infected with a virus, it can be transmitted to the other plant.
- Cutting: Virus diseases can spread through cuttings, where a piece of a plant is cut and then used to grow a new plant. If the parent plant is infected with a virus, the virus can be present in the cutting and transmitted to the new plant.
In conclusion, while virus diseases do not generally spread through seeds, they can spread through other means such as vegetative propagation, grafting, and cutting. It is important for plant growers to be aware of these modes of transmission in order to prevent the spread of virus diseases in their crops.

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