Double fertilization is a complex fertilization mechanism of flowering plants. This process involves the joining of a female gametophyte with two male gametes. It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower.
<u>Answer:</u>
<em>A law is a statement of fact but a theory is an explanation.
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<u>Explanation:</u>
<em>A law is in general a universally accepted fact.</em> It remains true and the same in any part of the world it takes several years of experimentation to develop a law.
<em>A law is a statement that cannot be challenged at the present point of time with all its technological advancements.</em> A theory is different from a law. It is an explanation of facts.
<em>Most acceptable one among several explanations becomes a theory. A theory doesn’t have a universal nature like that of a fact. </em>
Answer:
The cell wall is a rigid non-living layer that is found outside the cell membrane and surrounds the cell
Explanation:
Answer:
endoplasmic reticulum
Explanation:
ER is full with proteins than help to synthesize phospholipids in plant cells
