Solution to Extended Learning 3 of Class 7 Chapter 8 Reproduction in Plants

3. Think of ten different fruit-bearing plants. Remember that many vegetables are also fruits of the plants. Discuss with your teacher, parents, farmers, fruit growers and agricultural experts (if available nearby) and find out the manner of their dispersal. Present your data in the form of a table as shown below:

S. No	Name of fruit-bearing plant	Agent through which seeds are dispersed	Part of seed which helps in dispersal
1.
2.
3.

Answer:

The complete table with ten fruits with different seed dispersal mechanisms are shown below:

S. No	Name of fruit-bearing plant	Agent through which seeds are dispersed	Part of seed which helps in dispersal
1.	Apple	Animals	The protective outer layer prevents the seeds from being digested by animals when they eat the fruit. The seeds get excreted out and germinate somewhere far away.
2.	Grape	Animals	The tough outer coating made from fibre prevents digestion of the seed after the fruit is consumed by birds/animals. The seeds are excreted out intact and are dispersed everywhere.
3.	Burdock	Animals	Hooked spines of the seed help to latch on to wandering animals and travel long distances.
4.	Mango	Animals	The hard, woody outer coating cannot be eaten by animals who drop the seeds after eating the flesh.
5.	Maple	Wind	The ‘wings’ of the seeds help them travel by fluttering in the wind.
6.	Dandelion	Wind	The fluffy ‘pappus’ consisting of feathery bristles present on the seed helps the wind to carry it long distances.
7.	Cottonwood	Wind	The white fluffy structure surrounding the seed helps it travel long distances with the wind.
8.	Mangrove	Water	The outer coating helps the seeds to remain buoyant and float for long distances in water currents, tides etc.
9.	Coconut	Water	Fibrous outer coating of the fruit which encloses the seed enables it to float in water for long distances.
10.	Touch-me-not	Ballistic/Explosion	The ripe seedpods burst open upon touching and the explosion scatters the seeds in multiple directions.

“Think of ten different fruit-bearing plants. Remember that many vegetables are also fruits of the plants. Discuss with your teacher, parents, farmers, fruit growers and agricultural experts (if available nearby) and find out the manner of their dispersal. Present your data in the form of a table as shown below:“

S. No	Name of fruit-bearing plant	Agent through which seeds are dispersed	Part of seed which helps in dispersal
1.
2.
3.

– Solved