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class 12th biology chapter 1 notes

  SEXUAL REPRODUCTION IN FLOWERING PLANTS About flowers:- the myriads(bunch of flowers) of flowers that we enjoy gazing at,the scents and the perfumes. the rich colour which attracts as an aid to sexual reproduction. All flowering plants show sexual reproduction,and the end product of sexual reproduction is, the fruits and seeds. In this chapter we will understand the morphology, structure and the processes of sexual reproduction in flowering plants(angiosperms). 1.1 FLOWER— A FASCINATING ORGAN OF ANGIOSPERM human beings have had an intimate relationship with flowers since time immemorial. flowers are objects of aesthetic,ornamental,social,religious and cultural value; they have always been used as symbols . flowers conveying important human feelings such as love, affection, happiness, grief, mourning, etc. flowers are morphological and embryological marvels and the sites of sexual reproduction.     1.2 PRE-FERTILISATION: STRUCTURE AND EVENTS male androecium s...