Solved Questions on Dispersal of Seeds and Pollination
1. How are seeds shown in the picture wind adapted for their dispersal?
a) They have sticky surfaces to attach to animals.
b) They have colourful appearances to attract insects.
c) They have hair or wings to float in the air.
d) They have a hard shell to protect them from the wind.
Answer: c) The seeds shown in the picture (cotton and dandelion) are wind adapted for their dispersal because they have hair or wings. These structures help them catch the wind and float through the air to find suitable environments to grow.
2. You observe a bumblebee buzzing around a flower, moving from one flower to another. What role do you think the bumblebee is playing in this process?
a) It is collecting nectar for its own food.
b) It is helping the flower grow taller.
c) It is dispersing seeds.
d) It is pollinating the flowers.
Answer: d) The role the bumblebee is playing in this process is pollinating the flowers. As it moves from one flower to another, the bumblebee picks up pollen on its body from the male parts of the flower (stamen) and transfers it to the female parts (pistil) of other flowers.
3. How does water assist in the dispersal of seeds?
a) Water carries seeds through streams and rivers to new places
b) Water helps seeds float in the air for long-distance dispersal
c) Water transports seeds by attaching them to animals' bodies
d) Water provides nutrients to seeds for better growth.
Answer: a) Water assists in the dispersal of seeds by carrying them through streams and rivers to new places. When seeds fall into bodies of water, they can be transported by the current, allowing them to reach different locations far from the parent plant.
4. Which of the following is an example of a pollinator?
a) 
b) 
c) 
d) 
Answer: a) Ladybugs can be important pollinators in certain plant species. They visit flowers in search of nectar and transfer pollen between flowers as they move around.
5. What is the role of pollen in the process of pollination?
a) It helps the flower grow taller.
b) It attracts insects for pollination.
c) It is required to form seeds.
d) It helps the flower produce more nectar.
Answer: c) The role of pollen in the process of pollination is that it is required to form seeds. When pollen is transferred from the male parts of a flower to the female parts, it leads to the development of seeds.
FAQs
1. What is vegetative propagation in plants
The practice of growing new plants from portions of an existing plant rather than seeds is known as vegetative propagation. With the help of structures like stems, roots, and leaves, plants may reproduce asexually in order to survive in harsh settings.
2. What are the vegetative parts of a plant?
A plant's vegetative portions are in charge of growth and development as compared to reproduction. They consist of the stems, roots, and leaves.
3. What is vegetative propagation in potato?
In order to create a new plant, a potato tuber - a portion of the plant must be used in vegetative propagation. The tuber is a subterranean structure used for storing buds and nutrients.
4. What is pollination, and how does it contribute to seed formation?
The process by which pollen is transferred from a flower's male reproductive organ, the anther, to its female reproductive organ, the stigma. Fertilisation, which results in seed development and the continuation of the plant life cycle, depends on this mechanism.
5. What is seed dispersal, and why is it important for plants?
The process by which plants disperse their seeds to new areas is known as seed dispersion. In order to ensure that plants colonise new regions and stay out of competition with their parent plants, it is essential for their survival and growth.
