When the temperature falls below a moderate level, seed germination speed ___________.

Water helps in softening the _______________.

• Water is absorbed by seeds through imbibition so that the seed coat can be soft.

The seed absorbing water causing swelling and softening of the seed coat at an ideal temperature is called _______________.

• Imbibition causes swelling and softening of seed coat.

Many seeds are not able to germinate unless they are exposed to ____________.

• Some seeds need sunlight to germinate as they need high temperature.
• Seeds can't germinate untill they don't get appropriate conditions.

The embryo grows rapidly, rupturing the covering layers and allowing the __________ to emerge.

• Radicle is the part of an embryo which forms root system in seed germination.

______________ forms the shoot system in seed germination.

• Plumule is the shoot making part in seed germination.

________________ is the basic process by which various plant species develop from a single seed into a plant.

• Germination of seed is resulted into formation of a plant.

If the soil is loose and has more holes, then it is said to hold a good amount of __________.

• Ploughing is done before sowing seeds so that the soil can hold more amount of oxygen.

_______________ aids as the dissolved oxygen for the growing embryo.

• As water contains oxygen molecule along with hydrogen it can provide oxygen to an embryo.

After imbibition, the activation of ____________ starts the growth process.

• Enzymes are activated to start growth after imbibition.
• Imbibition is a type of diffusion which occurs in liquids.

The embryo grows rapidly, rupturing the covering layers and allowing the ___________ to emerge.

• Embryo allows radicle to emerge as it is a Root making part of a seed.

_________ aids by giving protoplasm with the essential hydration.

• Water aids protoplasm to give hydration.

Predators are more likely to target ___________ birds in a species.

Birds use colors and patterns to ___________ their own species.

Colors can help birds ______________ themselves from predators.

______________ plumage may be worn for the full spring and summer in certain species, while it may only be worn for a few weeks in others.