Explain the term protandry and protogyny with examples.

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Solution

Protandry Protogyny
1) The process in which the anther mature before the maturation of pistil to prevent self-fertility. The process in which the pistil mature before the maturation of anther to prevent self-fertility.
2) The examples are ivy and rosebay willowherb. The examples are apple and pear.

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Protoandry and Protogyny are examples of

	Column I		Column II
A.	Protandry	(i)	Ovaries mature earlier than testes
B.	Protogyny	(ii)	Testes mature earlier than ovaries
C.	Metameric segmentation	(iii)	Scorpion
D.	Radial symmetry	(iv)	Nereis
E.	Book lungs	(v)	Aurelia

What is meant by the terms 'solute' and 'solvent'? Explain with examples.

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Protandry	Protogyny
1) The process in which the anther mature before the maturation of pistil to prevent self-fertility.	The process in which the pistil mature before the maturation of anther to prevent self-fertility.
2) The examples are ivy and rosebay willowherb.	The examples are apple and pear.