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Self evaluation I . Choose and write the correct options. 1. “The bird of paradise flower” refers to a. Musa paradisiaca b. Strelitzia reginae c. Ravenala madagascariensis d. Heliconia sp. 2. The phyllotaxy in Musa is a. alternate b. opposite c. distichous d. spiral 3. In inflorescence in Ravenala madagascariensis is a. compound cyme b. compound raceme c. branched spadix d. simple raceme 4. The number of fertile stamens in Ravenala madagascariensis is a. three b. fourc c. five d. six II. Answer the following questions in two or three sentences. 5. What is polygamous ? Give an example. 6. What is monocorpic perennial ? Give an example. 7. Write the systematic position of Musaceae. 8. Explain the gynoecium of Musa paradisiaca,. 9. Draw the floral diagram of bisexual flower of Musa paradisiaca and write floral formula. 10. What is pseudostem? How is it formed in Musa paradisiaca ? 11. List out the economic importance of Musa paradisiaca. III. Answer the following in about 100 words. 12. Write the differences between Musa and Ravenala. 13. Describe the androecium and gynoecium of Musa paradisiaca. 14. Write the economic importance of members of Musaceae. IV. Answer the following questions in 200 words. 15. Describe Musa paradisiaca in technical terms. 16. Write the general characteristic features of Musaceae. 60
1.3.8. ARECACEAE – the palm family Systematic position Class: Monocotyledonae Series: Calycinae Family: Arecaceae General characters Distribution Arecaceae is one of the largest families in monocotyledons. It includes about 217 genera and more than 2,500 species. The members of this family are distributed throughout the tropical regions of the world. In India, it is represented by about 25 genera and more than 225 species. Habit Mostly unbranched trees with arborescent stem having prominent scars of leaf bases and a crown of large leaves (eg. Cocos nucifera) or shrubs eg. Nipa fruticans has no aerial stem and leaves arise directly from the underground rhizome. Root Fibrous and adventitious root system. Stem Mostly aerial, erect, unbranched and columnar having prominent scars of leaf bases. Stem is short and stumpy in Phoenix acaulis. Internodes are usually short. Leaf Exstipulate, petiolate, petiole long and very strong with sheathing leaf base, palmately compound (eg. Borassus flabellifer) and usually in terminal clusters. Phyllotaxy is usually alternate spiral but scattered in Calamus. Venation is pinnately parallel (eg. Cocos nucifera) or palmately parallel divergent (eg. Borassus flabellifer). Inflorescence Large, usually lateral arising from the axils of leaves, spadix (eg. Phoenix sylvestris) or compound spadix (eg. Cocos nucifera) enclosed by 61
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BOTANY Higher Secondary Second Year
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Preface The most important and cruc
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1. Taxonomy PRACTICALS (30 periods)
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1. TAXONOMY OF ANGIOSPERMS Taxonomy
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compared to perianth with two whorl
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a total variety or species. To conc
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well known system of classification
Page 15 and 16: Self Evaluation I . Choose and writ
Page 17 and 18: Series (iii) Calyciflorae It includ
Page 19 and 20: Class III Monocotyledonae Seeds of
Page 21 and 22: 5. How many families were described
Page 23 and 24: Flower Bracteate or ebracteate, bra
Page 25 and 26: A twig Sepal Epicalyx Calyx A petal
Page 27 and 28: Self evaluation I . Choose and writ
Page 29 and 30: Inflorescence Usually a raceme eg.
Page 31 and 32: Calyx Ovary Gynoecium Bracteole Flo
Page 33 and 34: 5. Fibre plants Fibres obtained fro
Page 35 and 36: 1.3.3. RUBIACEAE - the coffee famil
Page 37 and 38: Stem Leaf Aerial, erect, branched,
Page 39 and 40: 1. Beverage plants ECONOMIC IMPORTA
Page 41 and 42: 1.3.4. ASTERACEAE - the sunflower f
Page 43 and 44: Habit Root Stem Leaf Botanical desc
Page 45 and 46: Fruit Seed A cypsela. Non-endosperm
Page 49 and 50: Flower Bracteate (eg. Petunia hybri
Page 51 and 52: Stamen Epipetalous stamens T.S. of
Page 55 and 56: (eg. Jatropha curcas). In xerophyti
Page 57 and 58: Perianth Tepals 5, arranged in sing
Page 59 and 60: 1. Food plants ECONOMIC IMPORTANCE
Page 61 and 62: MONOCOT FAMILY 1.3.7 MUSACEAE - the
Page 63 and 64: Habit Root Stem Botanical descripti
Page 65: Androecium Stamens 6, in two whorls
Page 69 and 70: Habit Botanical description of Coco
Page 71 and 72: Gynoecium Absent but pistillode is
Page 73 and 74: II. Answer the following questions
Page 75 and 76: Classification of meristem Based on
Page 77 and 78: oval, spherical, rectangular, cylin
Page 79 and 80: Fibres Fibre cells are dead cells.
Page 81 and 82: Tracheid conducting elements in ang
Page 83 and 84: a lining layer of cytoplasm. This i
Page 85 and 86: 2. Epidermis protects the underlyin
Page 87 and 88: made up of barrel shaped parenchyma
Page 89 and 90: 2.2. Anatomy of monocot and dicot r
Page 91 and 92: The endodermal cells, which are opp
Page 93 and 94: Cortex Cortex consists of only pare
Page 97 and 98: Ground plan A sector enlarged Fig.
Page 99 and 100: Ground plan A sector enlarged Fig.
Page 101 and 102: Xylem Xylem consists of xylem fibre
Page 103 and 104: 2.4. Anatomy of a dicot and monocot
Page 105 and 106: Vascular tissues Vascular tissues a
Page 109 and 110: 1. Formation of interfascicular cam
Page 111 and 112: Formation of periderm As secondary
Page 113 and 114: Each annual ring refers to one year
Page 115 and 116: 8. What are complementary cells? 9.
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chromosome has one centromere and t
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Chromosomal puff Dark band inter ba
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The genome size of an individual is
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ound pollen (bbll). All the F1 hybr
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points called chiasmata. Crossing o
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3.4. Recombination of chromosome Th
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Point or gene mutation Point mutati
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II. Answer the following questions
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127 Fig. 3.6 Chromosomal aberration
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Autopolyploidy Ploidy - flow chart
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Self evaluation I . Choose and writ
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cells was injected into the mouse,
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Replication fork Super coil DNA pol
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3.8. Structure of RNA and its types
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Role of RNA in protein synthesis Th
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The transfer of message present in
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IV. Answer the following questions
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to join DNA fragments. Thus the res
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Ti plasmid T-DNA Foreign DNA Bacter
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Restriction enzyme and ligase do no
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4.2 Transgenic plants Introduction
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introducing Bt toxin gene in cotton
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2. The number of transgenic plants
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Pot plant Explant Inoculation Surfa
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. Embryogenesis Formation of embryo
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Strain A Strain B Isolation of prot
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The term ‘single cell protein’
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8. What is PEG? 9. How do you remov
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Many enzymes consists of a protein
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5.1.3. Theories explaining the mech
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5.2.1. Significance of photosynthes
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The reactions of photosynthesis can
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179 Fig. 5.8. Non-cyclic photophosp
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Difference between cyclic and noncy
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power NADPH 2 . So, two molecules o
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Fig.5.11 Hatch-Slack pathway of CO
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Difference between C 3 and C 4 phot
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Glycine molecules enter into mitoch
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Among leaf factors, such as leaf ag
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Epiphyte eg. Vanda Aerial root Part
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When an insect is attracted by the
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11. The gas evolved during photosyn
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40. Explain the test tube and funne
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201 Fig. 5.17 Overall scheme of res
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Fig. 5.18 Process of Glycolysis 203
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decarboxylation and dehydrogenation
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9. The malic acid is oxidized to ox
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is fixed in the vertical position w
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Nonoxidative phase In this phase, v
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Respiratory quotient for anaerobic
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5. Fructose 1,6-bisphosphate is cle
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32. Write short notes on anaerobic
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this phase is called lag phase. It
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Physiological effects of auxin Auxi
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endosperm of coconut. Cytokinin occ
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4. Bakanae disease in paddy is caus
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5.5. Photoperiodism and vernalizati
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c. sunflower d. maize 4. Which of t
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1. To develop more food crops 2. To
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Clonal selection Crops like sugarca
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The haploid individual plant will h
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methods new improved crops are obta
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6.2. Crop diseases and their contro
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Pathogen The mycelium of Cercospora
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3. They also bring about considerab
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It is hoped that one day geneticall
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2. The genetic resources of the dev
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This will affect millions of uneduc
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additives. It depends upon crop rot
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COMMONLY AVAILABLE MEDICINAL PLANTS
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urinary infections, tuberculosis, m
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Groundnut oil is used to a limited
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