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In most this is through an effect called photoperiodism. Since the earth wobbles on her axis the ratio of daylight/nighttime changes in areas away from the equator over the course of the solar year. Therefore, by measuring the amount of dark in a 24 hr period, a plant can effectively tell what time of the year it is. Experiments using artificial lighting have verified this temporal sense in a great number of species. This is not the only way plants orient themselves in time, however. The number of chills the plant has experienced can also be a factor and is the reason you will often see early blooms after mild winters.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoYou will konw that the plants grow because in a couple of days it will b bigger than what you had at first.
Wiki User
∙ 13y agoNo they dont, they move because of the movement of growth hormones caused by gravity and temperature
Wiki User
∙ 14y agoPlants follow the way that their light comes from, and since that's usually sun, they grow upwards.
Wiki User
∙ 11y agowhen they feel a warm air or they can feel sun rays beaming down on them
Wiki User
∙ 11y agohow do plants know when to grow in spring
Wiki User
∙ 11y agoby the tempature
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Why do plants grow in different places?
it is important to know in what kind of environment they will grow best
Do plants grow faster with vitamin water or tap water?
No. If you water a plant with vitamin water the soil starts molding, the seeds do not sprout and it smells really bad! I've tried this myself at home that's how I know! yes plants will grow no plant will not grow
Example of plants that grow from shoots?
African Violets . . . . . . .Streptocarpus . . . . . Begonia . . . . . . Kataka-taka
In which direction do plants roots grow?
The roots of most plants grow towards the pull of gravity.
Which plants grow in burrows?
plants that grow on burrows are:- 1.peepal 2.swips
What plants grow in Fall?
I don't know what plants grow in Fall? Does anybody else know? Keisha
How do plants grow and survive in the middle east?
plants grow know matter what conditions
How do you know that plants grow?
You know when they are taller than they were!
What is true of stars and plants?
As far as we know, plants need starlight to grow.
Does water mixed with salt really help plants grow?
i think it does not help plants grow because i really don't know
Why do plants grow in different places?
it is important to know in what kind of environment they will grow best
Why is it important to understand what makes plants grow?
so you know how to grow it the right way
Why plants grow in different places?
it is important to know in what kind of environment they will grow best
What are the other plants that grow from leaves?
There can be more plants. But very few people know it.
Can plants grow on planets?
So far as we know none of the planets in the solar system are able to support plants as we know them on earth.
Do plants grow better inside or out side?
well of course plants grow better inside because you can have you-know-what with it inside but outside its lonely. simple.
What plants also grow algae?
i don't know i like typing
