PLANT DEVELOPMENT & REPRODUCTION - CBSE International

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PrefaceEducation plays the most important role in acquiring professional and social skills and apositive attitude to face the challenges of life. Curriculum is a comprehensive plan of anyeducational programme. It is also one of the means of bringing about qualitative improvementin an educational system. The Curriculum initiated by Central Board of Secondary Education-International (CBSE-i) is a progressive step in making the educational content responsive toglobal needs. It signifies the emergence of a fresh thought process in imparting a curriculumwhich would restore the independence of the learner to pursue the learning process in harmonywith the existing personal, social and cultural ethos.The CBSE introduced the CBSE-i curriculum as a pilot project in few schools situated outsideIndia in 2010 in classes I and IX and extended the programme to classes II, VI and X in thesession 2011-12. It is going to be introduced in classes III, VII and for Senior Secondary classeswith class XI in the session 2012-13.The Senior Secondary stage of education decides the course of life of any student. At this stageit becomes extremely important for learners to develop the right attitude, a willingness to learnand an understanding of the world around them to be able to take right decisions for theirfuture. The senior secondary curriculum is expected to provide necessary base for the growthof knowledge and skills and thereby enhance a student’s potential to face the challenges ofglobal competitiveness. The CBSE-i Senior Secondary Curriculum aims at developing desiredprofessional, managerial and communication skills as per the requirement of the world of work.CBSE-i is for the current session offering curriculum in ten subjects i.e. Physics Chemistry,Biology, Accountancy, Business-Studies, Economics, Geography, ICT, English, Mathematics Iand Mathematics II. Mathematics at two levels caters to the differing needs of learners of puresciences or commerce.The Curriculum has been designed to nurture multiple intelligences like linguistic or verbalintelligence, logical mathematical intelligence, spatial intelligence, sports intelligence, musicalintelligence, inter-personal intelligence and intra-personal intelligence.The Core skills are the most significant aspects of a learner’s holistic growth and learningcurve. The objective of this part of the core of curriculum is to scaffold the learning experiencesand to relate tacit knowledge with formal knowledge. This involves trans-disciplinary linkagesthat would form the core of the learning process. Perspectives, SEWA (Social Empowermentthrough Work and Action), Life Skills and Research would be the constituents of this ‘Core’.The CBSE-i Curriculum evolves by building on learning experiences inside the classroom overUnit 1 Plant Development & Reproductionvi
a period of time. The Board while addressing the issues of empowerment with the help ofthe schools’ administering this system strongly recommends that practicing teachers becomeskilful and lifelong learners and also transfer their learning experiences to their peers throughthe interactive platforms provided by the Board.The success of this curriculum depends upon its effective implementation and it is expectedthat the teachers will make efforts to create better facilities, develop linkages with the worldof work and foster conducive environment as per recommendations made in the curriculumdocument.I appreciate the effort of Dr. Sadhana Parashar, Director (ART & I), CBSE and her team involvedin the development of this document. I specially appreciate the efforts of (Late) Dr. Srijata Dasfor working tirelessly towards meeting deadlines.The CBSE-i website enables all stakeholders to participate in this initiative through the discussionforums. Any further suggestions on improving the portal are always welcome.Vineet JoshiChairman, CBSEUnit 1 Plant Development & Reproductionvii
Page 3: The CBSE-International is grateful
Page 8 and 9: AcknowledgementsAdvisoryShri Vineet
Page 10 and 11: 2. Cell enlargement: In this phase,
Page 12 and 13: Auxanometer(Gr. auxain, “to grow
Page 14 and 15: with simple cell/organism like bact
Page 16 and 17: Primary and Secondary growthin a tw
Page 18 and 19: activity, such as Indol-3-ethanol,
Page 20 and 21: Commercial use of AuxinUse of auxin
Page 22 and 23: Commercial Application of GA1. GAs
Page 24 and 25: ABA (Abscisic Acid) Savoir from adv
Page 26 and 27: OHEthylene is also involved in the
Page 28: Salicylic acidIt is naturally occur
Page 31 and 32: carried out mainly by two types of
Page 33 and 34: conditions are favorable and ample
Page 35 and 36: Figure 23: Flower showing the male
Page 37 and 38: What would be theploidy of the cell
Page 39 and 40: Activity 6Aim: To study the pollen
Page 41 and 42: Megasporogenesis: The process of fo
Page 43 and 44: synchronized. Either the pollen is
Page 45 and 46: Pollination by water is quite rare
Page 47 and 48: on the stigma. The pistil has the a
Page 49 and 50: Antipodal cellPolar nuclei(n)Female
Page 51 and 52: called coleorrhiza. The portion of
Page 54 and 55: Activity 8Observe some flowers of t
Page 56 and 57:
Unlike polyembryony, the apomixis i
Page 58 and 59:
of vascular plants (Dicots, gymnosp
Page 60 and 61:
two polar nuclei (the second polar
Page 62 and 63:
Q.4. Discuss the photoperiodism and
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PLANT DEVELOPMENT & REPRODUCTION - CBSE International

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