Transcript How do seeds form?

How are seeds
formed?
By: Nyle, Gerome, Geeta, Winnie
Class: 5E
Motto: Go Go Power Rangers!
Pollination
• Pollen grains from the anther need to be
transferred to the stigma of the male
part.
• Plants cannot move from place to place
so they rely on external areas to carry
out pollination.
Fertilization
•
Fertilization takes place when a male sex cell
joins with a female sex cell.
•
The male cell travels down into the ovary of the
female part of the flower.
•
When the male cell reaches the ovule it is
released from a tube to fertilize the female sex
cell.
•
The pollen grain has 2 nuclei. One fuses with the
nucleus of the female cell, while the other fuses
with 2 other cells in the ovule to form a food
store. The ovule can now develop into a seed!
Developing into a fruit
• The fertilized plant female egg cell
develops into an embryo which is
contained in the ovule.
• It grows into a fruit with seed/seeds
inside the fruit.
• The flower petals will eventually fade
and die.
• The hollow part near the ovary starts to
swell, and slowly form a fruit.
conclusion
The ovary increases in size until it turns into a
fruit. The ovules inside have become mature
seeds. When the seeds are dispersed and the
conditions are favorable, the seeds germinate and
the life cycle is carried on. When it turns into an
adult, the cycle repeats itself again.
The Awesome Nyle
Quiz!
•
Q1 Who is the coolest in my group
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A) Gerome
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B) Nyle
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C) Winnie
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D) Geeta
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Hint: The Answer is B!!
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Ans:B
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Q2 What is the Motto of the team
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A) Barney is a dinosaur with no imagination!
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B) Why so serious?
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C) Go Go Power Ranger!
Scientific Questions! ( Hard
Questions! Beware!) Pg1
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Complete this sentence
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Fertilization takes place when a male_______ cell joins with the female _______ cell.
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Ans: sex and sex
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What does the fertilized plant female egg develop into?
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A) baby
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B) fruit
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C) embryo
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D) leaf
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Hint: Answer is D
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Ans: C
Scientific Questions! (Beware! They
are MIND BLOWING!) Pg2
•
The pollen grain has how many nuclei (nucleus)
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A)0
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B)1000000000000000000000000000000000000000000000
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C)2
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D)1
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Hint: B TROLOLOLOL
Sources
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Nyle’s Brain, Gerome’s Brain, Geeta’s Brain, Winnie’s
Brain
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A book called “Science Questions and Answers
Primary 5”.