Question

In Xanthium, seed dispersal occurs with the help of

• A. Hair
• B. animals
• C. Water
• D. Wings

Answer 1

The correct option is B

animals

The correct option is B

Explanation of correct option:

1. In Urena and Xanthium, fruits are thorny and thus can stick to animal bodies.
2. Thus such seeds are dispersed with the help of animals.

Explanation of incorrect options:

Option a:

1. In some cases light seeds of grasses or hairy seeds , hairy fruit are carried to far off places by wind.

Option c:

1. In this method of seed dispersal, seeds float away from their parent plant.
2. These are mainly seen in those plant which lives in water or nearby the water bodies like beaches, lakes, ponds etc.
3. Coconut, palm, mangroves, water lily, water mint, are a few examples of plants whose seed are dispersed by the water.

Option d:

• Plants like maple, drumstick, fruits have wing like structures.
• The seeds of these plants can be dispersed to suitable environment with the help of wind.

Final answer: In Xanthium, seed dispersal occurs with the help of animals