The Hyderabad School, Begumpet 8- CLASS BIOLOGY WORKSHEET-1

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1 The Hyderabad School, Begumpet 8- CLASS BIOLOGY WORKSHEET-1 CHAPTER 1: CELL : THE UNIT OF LIFE I.Name the following. 1.The structural and functional unit of life. 2. The site of cellular respiration. 3. The powerhouse of the cell. 4.The boss opf the cell. 5. The suicide bag of the cell. II.Give the location and function of the following. 1.Chloroplast 2. Ribosome 3. Vacuole 4. Centrosome 5.Endoplasmicreticulum III.Give the difference between the following. 1.Animal cell and plant cell 2.Protoplasm and cytoplasm 3. Prokaryote and Eukaryote 4.Chromoplasts and Chloroplasts 5. Organelles and organs IV. Give scientific reasons. 1.Cells are very small 2.Nucleus is the boss of the cell. V.Draw labeled diagrams of plant cell and animal cell. CHAPTER II - TISSUES : PLANT & ANIMAL TISSUES I) Name the following a) The kind of tissue found at the tip of plant roots? b) The kind of tissue found at the lower surface of leaf c) The kind of tissue found in the inner lining of intestine d) The kind of tissue found at the joint between two long bones

2 e) The kind of tissue found in the walls of the veins of leafs f) The kind of tissue found in the grittymasses in the pulp of pears g) The kind of cells found in the surface of human skin h) The kind of cells found in the brain i) The kind of cells found in the inner lining of wind pipe j) The kind of cells found in the salivary glands II) Differentiate between a) Parenchyma & Collenchyma b) Meristematic Tissue & Permanent Tissue c) Sclerenchyma &Parenchyma d) Cell &Tissue e) Organ &Organism f) Organ &Organelle g) Organ & Organ System h) Striated Muscles &UnstriatedMuscle i) Striated Muscles & Cardiac Muscles j) Blood &Lymph k) Xylem &Phloem l) Bone &Cartilage III) Give one word for each of the following a) A group of similar cells to perform a specific function b)cells least specialized in the Plants c)cells responsible for increase in diameter of the stem & root of Dicot Plants. IV) Which one of the following pairs is correctly matched? a) Meristem - Actively dividing cells b) Xylem - Transport of food c) Phloem - Transport of water d) Sclerenchyma - Storage of starch V) Describe the Nervous Tissue. Draw a neat labeled diagram of Neuron / Nerve Cell.

3 VI) Identify & label the following diagrams VII) Name the kind of Animal Tissue in which a) Cells that are flat, cuboidal or columnar forming a protective layer b) Cells that produce & pour out chemical substances c) Cells that can contract & relax d) Cells that 0can conduct impulses VIII) IX) a. Where is the least specialized tissue located in plants? b. Where is ciliated epithelium found in Humans? What is its function? Name the three kinds of muscles in Human Body giving one example of each. X) Describe the Fibrous Connective Tissue XI) Give the technical terms for the following a) A category of Plant Tissues that have lost their ability to multiply b) Kind of Plant Cells with thin walls & usually a single large vacuole c) Elongated cells which are thickened at the corners. d) The two types of tissues which provide upward movement of water and dissolved materials from the roots to other parts of the plant. XII) Choose the correct option. 1. Starch in potato is stored in i) Sclerenchyma ii) Collenchyma iii) Parenchyma iv) Chlorenchyma 2. Tendons & Ligaments are examples of i) Fibrous connective tissue ii) Cartilage iii) Muscular tissue iv) Adipose tissue XIII) Mention if the following statements are TRUE or FALSE. a) Axons of nerve cells are very long b) Dendrons bundled together form a nerve c) Cardiac muscles get tired soon

4 d) Epithelial cells leave space in b/w e) Perikaryon is the nucleus of a nerve cell f) Muscles of the iris of the eye are of voluntary type g) Cartilage has no blood vessels or the nerves in it XIV) Fill in the blanks a) Conducting tissue is also called as tissue. b) are elongated dead cells with large cavities without any contents. c) Xylem & Phloem collectively form bundles. d) Bone consists of both living cells and a lipid mass of salts. e) Nerve tissue is concerned with the & of animals. XV) State the major functions of the following a) Xylem b) Squamous Epithelium c) Phloem XV) Give reasons 1. Vascular Tissue is known as Complex Tissue. Give Reason. Chapter III- The Flower I. Name the following a) A flower in which both male and female reproductive organs are lacking. b) The groups of secreting cells situated at the base of the pistil or on the basis of the petals. c) A tree which is called the flame of the forest. II. Explain the following terms : a) Incomplete flower. b) Staminate flower c) Pistillate flower

5 d) Bisexual flower e) complete flower f) Monadelphous g) Diadelphous h) polyadelphous III. Distinguish between : - a) petals &petaloids b) flower& inflorescence c) petaloids&sepaloids d) polypetalous&gamopetaloous e) monoecious plants &dioecious plants IV. Define a) Flower b) Perianth c) Hermaphrodite d) Epicalyx V. Where are the following structures / parts located and what are their functions? a) placenta b) thalamus c) anther d) stigma VI. Why are the following described as stated? a) Maize plant as monoecious. b) Ray florets of sunflower as neuters c) Salvia sepals as petaloid d) China rose stamens as epipetaloid. VII. Describe the male part of the flower in detail VIII. Describe the female part of the flower in detail IX. Mention the four whorls of a flower. X. Write short notes on Bracts. XI. Match the parts in column A with the flowers or parts of flower in column B. Column A Column B

6 a) a) polyadelphous i) polypetalous b) b) pollen grains ii) calyx, corolla c) c) free petals iii) nectar d) d) non-essential iv) bombax e) e) sweet fragrant fluid v) pollen sac XII. Mention if the following statements are true or false. a) Papaya is a monoecious plant. b) The prefix gamo is used whenever any of the floral whorls are fused. c) Nasturtium has nectaries. d) Stamens& carpels are the male & female parts respectively. XIII. Fill in the blanks. a) is called the flame of the forest. b) The protect the young flower bud and when green they also perform photosynthesis. c) The attract insects for pollination. They also protect stamens and pistils especially when the petals form a tube. d) is the tubular slender stalk which connects the stigma to the ovary. XIV. Identify and label the following diagram. CHAPTER IV POLLINATION AND FERTILIZATION 1 Name the following a) The chief pollinating agent against the corresponding plant b) Dahlia c) Maize d) Vallisneria

7 e) ii) The parts of the ovary which give rise to f) Seed g) Fruit h) Fruit Wall 2. Mention True or False. If False rewrite the correct statement : 6 Differentiate between a) Ornithophily / Elephophily b) Entomophily / Anemophily c) Herkogamy / Heterostyly d) Wind Pollinated Flowers / Insect Pollinated Flowers e) Autogamy / Allogamy 7 Define :-

8 a) Protandry h) Geitonogamy b) Protogyny i) Pollination c) Dichogamy j) Cross Pollination d) Hydrophily e) Triple Fusion f) Double Fertilization g) Artificial Pollination 8 Describe the two advantages of cross pollination 9 Describe the disadvantages of cross pollination 10 Describe any two contrivances in flowers which favour cross pollination 11 Give technical terms for the following a) When pollengrains of a flower reach the stigma of the same flower. b) When maturation time of reproductive parts in a flower is different. c) When stigma and anthers do not grow up to same height, which favours only cross pollination. 12 What are the advantages of the following in the flower to the plant concerned a) Long and feathery stigma b) Brightly coloured petals c) Smooth and light pollen d) Protruding and easily movable anthers. e) Fragrant Nectar. 13 What happens to the following after fertilization a)ovules b) Calyx 14 Give one word / term for a)a flower containing both male and female parts. 15 What is the function of the pollen tube 16 Fill in the blanks with suitable words a) Transference of pollengrains from the stigma to anthers of the same flower is called. b) is a water pollinated flower. 17 Match the items in column A with those in column B :

9 Column A Column B a) Generative Nucleus i) Pollen Tube b) Germ Pore ii) Endosperm nucleus c) Exine iii) Testa d) Secondary Nucleus iv) Fertilization e) Integument v) Male Nuclei f) Egg Nucleus vi) Rough 18 Column 1 Column 2 i) Feathery Stigma hanging out a) Rafflesia ii) Different timing for maturation b) Entomophilous of anthers and stigma iii) Pollination by elephant c) Wind Pollination iv) Flower produce nectar d) Dichogamy

10 CHAPTER V SEEDS STRUCTURE AND GERMINATION

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12 a.label the parts 1-6 b.what does part 4 and 6 grow into respectively 7.Observe the following diagram and answer the questions that follow i)define germination and the type of germination shown in the above diagram. ii)label the parts 1-4 iii)briefly explain the germination shown.

13 Chapter VI

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16 Chapter VII: Vegetative propagation and Micro propogation i.name the following a) 1.Process of mixing up of characters of two parents in the new spring. b) 2.Organisms with a foreign gene c) 3.Use of microorganisms in industry to manufacture certain foods and drugs ii.write the differences between the following a) 1.Sexual propagation and vegetative propagation b) 2.Self pollination and cross pollination. c) 3.Grafting and cutting. iii.write the steps of recombinant DNA technology iv.give the applications of Bio-Technology in medicine and industry. v.give two examples of transgenic organisms vi.observe the diagram given below and answer the questions below: 1.Describe what has been done in plants A and B. 2.Mention the difference between scion and stock. vii.observe the diagram given below and answer the questions below:

17 1.Name the process occurring in flasks A, B, C and D 2.Define callus, explant, plantlets. 3.Give the advantages and disadvantages of micropropagation. 1. Name the following. Chapter VIII : ECOSYSTEMS a) Interconnection of foodchains. b) Organisms that make their own food. c) Organisms that break down organic matter. d) Organisms that eat plants. e) The total dry weight of organisms. 2.Write the difference. a.flora and fauna b. Biotic and Abiotic components c.primary consumers and Secondary consumers d.pyramid of Numbers and Pyramid of Biomass e.producers and Detritivores 3.Define the following. a) Ecosystem b) Food chain c) Tropic level d) Decomposers e) Food web 4.Give scientific reasons. a) Tiger depends on producers. b) We need to restore the ecosystem c) No ecosystem can survive without light.

18 Chapter IX

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