Question

worksheet 2
key concepts: germination of seed, dispersal of seed

1. multiple choice questions

darken the bubble next to each correct option.
1 when a seed begins to sprout and new leaves emerge, the process is called
a. fertilisation
b. germination
c. respiration
d. photosynthesis
2 after a seed germinates, it becomes a/an _
a. seedling
b. flower
c. adult seed
d. root
3 when a seed starts to swell after absorbing water, the process is called _
a. germination
b. breathing
c. imbibition
d. pollination
4 scattering of seeds over a large area for the production of new plants is called
a. dispersal
b. pollination
c. germination
d. hibernation
5 when pods burst open and seeds get dispersed, this type of dispersion is caused by _
a. wind
b. water
c. animal
d. explosion
6 when a fruit explodes, it helps in the _ of seed.
a. germination
b. dispersal
c. fertilisation
d. reproduction
12

Explanation:

1. Germination is the process when a seed sprouts and new leaves emerge. Fertilisation is the fusion of gametes, respiration is the process of breaking down food for energy, and photosynthesis is the process by which plants make food using sunlight.
2. After germination, a seed becomes a seedling. A flower is a reproductive part of a plant, an adult seed is not a standard term in this context, and a root is a part of the seedling.
3. When a seed swells after absorbing water, it is called imbibition. Germination is the overall process of the seed developing into a plant, breathing is a part of respiration, and pollination is the transfer of pollen.
4. Scattering of seeds is called dispersal. Pollination is the transfer of pollen, germination is the growth of the seed, and hibernation is a state of inactivity in animals.
5. When pods burst open, it is explosion - based dispersal. Wind, water, and animal dispersal involve different mechanisms (e.g., wind - blown seeds, seeds carried by water or animals).
6. A fruit exploding helps in dispersal of seeds. Germination is the growth of the seed, fertilisation is the fusion of gametes, and reproduction is a broader process of which dispersal is a part.

Answer:

1. b. germination
2. a. seedling
3. c. imbibition
4. a. dispersal
5. d. explosion
6. b. dispersal