SOLVED C@RNER NCERT Intext Questions 1. What is a tissue? Ans. Tissue is a group of similar cells which perform the samme function and have origin. 2. What is the utility of tissues in multicellular organisms? Ans, Tissues are made up of a group of cells carrying & specialised function, Each specialise function is taken up by a different tissue, Since these cells of a tissue carry out only, particular function, they do it very efficiently: For example, in human beings, muse pills contract or relax to cause movement, nerve cells carry messages, and blood floyy to transport gases, food, hormones anel wastes material andl so on, Likewise, in plang, vascular tissues (xylem, phloem) conduct water and food from one part of the plant other parts, So, niulticellular organisms show division of labour through tissues, 3. Name the types of simple tissues. 4 common, Ans. Chere are 3 types of simple tissues: (i) Parenchyma (ii) Collenchyma (iii) Sclerenchyma 4, Where is apical meristem found? ‘Ans. Apical meristem is found in shoot apex and root apex of ph 5. Which tissue makes up the husk of coconut? Ans, Sclerenchyma tissue. 6, What are the const ents of phloem? Ans. Phloem is made up of four types of elements: (i) Sieve tubes (ii) Companion cells (ii) Phloem fibres (iv) Phloem parenchyma 7. Name the tissue responsible for movement in our body. Ans. Muscular tissue 8. What does a neuron look like? ‘Ans. Aneuron consists of a cell body with a nucleus and cytoplasm, from which long thin hail» like parts arise called dendrites. Each neuron has a single long part called the axon. 9. Give three features of the cardiac muscle. ‘Ans. (i) Cardiac muscles are involuntary. (i) Cardiac muscle cells are cylindrical, branched and uninucleate (iii) Cardiac muscles show rhythmic contraction and relaxation, Pleo 84 I Biology-Xyr what # ae re 0. gar dssue is connective tissue. It fill the space inside the organs, d helps in repair of tissues. re the functions of areolar tissue? supports internal ‘. sno gas a ‘i eAT Exercises > Define the term ‘tissue’. at roup of cells that are similar in structure and work together to achieve a particular scion is called tissue. g, How many types of elements together make up the xylem tissue? Name them, ~ our types of elements make up the xylem tissue, They are: (i) Tracheids (i Vessels (iii) Xylem parenchyma, and (jo) Xylem fibres How are simple tissues different from complex tissues in plants? simple tissue is made up of only one type of cell whereas a complex tissue is made up of different types of cells. 4, Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall. Ans. The differences between cell walls of parenchyma, collenchyma and sclerenchyma are: Parenchyma Collenchyma Sclerenchyma Cell wall is primary. ell wall is primary. Cell wall is secondary. Cell wall is thin and made up of | Cell wall has irregular thickening | Cell wall is uniformly thick due very less cellulose. of cellulose. to deposition of lignin, 5. What are the functions of the stomata? ns. The important functions of the stomata are: ( Exchange of gases with atmosphere. (ii) Transpiration, i., loss of water in the form of water vapour. 6, Diagrammatically, show the difference in three types of muscle fibres. Cardiac must re Smooth muse fore ‘Stated muscle fro |. What is the specific function of the cardiac muscle? Ans, Cardiac muscles occur in the heart and bring about the rhythmic contraction and Telaxation of the heart throughout life. Tissue J 85 was!B. | 8. Differentiate between striated, unstriated and cardiac muscles on the basis of they structure and site/location in the body. ‘ ‘ Ans. Difk ated and cardiac museles are as follows ns. Differe eas fo es betws “Unstriated Muscle Cardine | Se eooraed | Teeter ' " " Is of unstriated of carding | Structure | The cells of striated The calf ar are cylindrical brane c long, cylindrical, muscles are lo inrical, | | srt and pointed ents a anid uninnceae | | multinucleated tuninucteate a ‘Location | The sareauached | Th esent in | Cardiac muscles are pL i se le ached | These muscles are present in les are pa ae ean MMS | Gheatimentaty canal lod | n the heat, = vessel, itis of the eye, ureter and broneh lig eae < tal 9. Draw a labelled diagram of a neuron. 10. Name the following: (a) Tissue that forms the inner li (6) Tissue that connects muscle to bone in humans, (c) Tissue that transports food in plants. (d) Tissue that stores fat in our body. (e) Connective tissue with a fluid matrix. (/) Tissue present in the brain. Ans. (a) Simple squamous epithelium (6) Tendon () Phloem (d) Adipose tissue (e) Blood (/) Nervous tissue 11. Identify the type of tissue in the following: skin, bark of tree, bone, lining of kidney tubule, vascular bundle, An: . Skin: Epithelial tissue (Squamous epithelium) Bark of tree: Cork (protective tissue) Bone: Skeletal tissue (connective tissue) Lining of kidney tubules: Cuboidal epithelial tissue Vascular bundle: Complex permanent tissue—xylem and phloemyr 12, Name the regions in which parenchyma tissue is present. i parenchyma is a simple permanent tissue present in the cortex and pith of stem and roots. It is also present in the mesophyll of leaves. 13, What is the role of epidermis in plants? Ans. Epidermis is a protective tissue of plants. It provides protection to underlying tissues. Epidermis forms the outer covering of the entire plant surface. Epidermal cells on the aerial parts of the plant often secrete a waxy, water-resistant layer on their outer surface, which provides protection against loss of water, mechanical injury and invasion of parasitic fungi. In the roots, they help in the absorption of water. 14, How does the cork act as a protective tissue? Ans. The cork cells are dead and do not have any intercellular spaces. The cell walls of the cork cells are coated with suberin (a waxy substance). Suberin makes these cells impermeable ‘o water and gases. Thus, it protects underlying tissues from desiccation (loss of water from plant body), infection and mechanical injury. 15. Complete the following chart: 71 simple complex] 1. ] [eatenchyma] [2 ] Laem 3. Ans, 1, Parenchyma 2 Sclerenchyma Q. PhloemP 9 Answer Questions jong AnseE v pats the function of erythrocytes (RBCs) and leucocytes (WBCs)in the human blood? - Md? ie abrief account of the chief types of tissues in plants. » esribe structure and various functions of connective tissues, " pifferentiate between the following structures: ‘ @ q) Tracheid and vessel. (0) Tendon and ligament. (9 Collenchyma and sclerenchyma. (@ Areolar connective tissue and dense connective tissue, (@ Parenchyma and collenchyma. p.Multiple Choice Questions —————————— siete right choice 1, Which of the following tissues has dead cells? [NCERT Exemplar] (a) Parenchyma (0) Sclerenchyma (c) Collenchyma (d) Epithelial tissue 2. Girth of stem increases due to [NCERT Exemplar} (a) apical meristem. (6) lateral meristem (0) intercalary meristem (d) vertical meristem Tissue 9 89 Ei4 nes of his hand were di which the Leap bate NCE are (by Break of skeletal muscle (a) Areolar tissue break like hands, legs, ete, INCERT By to move the bones 3. A person met with an accident i Which among the following may be the Po (a) Tendon break (©) Ligament break 4. While doing work and running, among the following is correct? | (a) Smooth muscles contract and pull the ligament squgenn (6) Smooth muscles contract and pull the tendons to move . ‘$ (©) Skeletal muscles contract and pull the ligament to move the bones (4) Skeletal muscles contract and pull the tendon to move the bones sted, Pay you move your organs 5. Which muscles act involuntarily? INCERT Exempiy (i) Striated muscles (ii) Smooth muscles (iii) Cardiac muscles (iv) Skeletal muscles (a) (i) and (ii) (b) Gi) and (iii) (© dit) and (jv) (d) (i) and (iv) 6. Which is not a function of epidermis? INCERT Exemplar} (a) Protection from adverse condition _(b) Gaseous exchange (€) Conduction of water (@) Transpiration 7. Select the incorrect sentence INC (a) Blood has matrix containing proteins, salts and hormones (0) Two bones are connected with ligament (©) Tendons are non-fibrous tissue and fragile (@) Cartilage is a form of connective tissue “ ae isnot ee — INCERT Exemplar] 9. Bone matrix is rich in : belies @ Muoride and calcium SEED Reenter (©) calcium and potassium () calcium and phosphorus (@) phosphor d potassi 10. Contractile proteins are found in PEA 1 ips cen se yiones () blood (© muscles eheailiege 11. Nervous tissue is not found in 8 ; @) brain Ohapiial ond Oi, INCERT Exemplar 12. Nerve cell does not contain (d) nerves g (a) axon @)nerve endings ( tendong gNCERT Beep 18. ‘The muscular tissue which function thro @) dendrites is (@ skeletal muscle (©) smooth muscle 14. ughout the life continuously without fatigue 1 INCERT Exemplar] (0) cardiac muscle @) voluntar Which of the following cells is found in ry muscle the cartilaginous tissue of the body? (a) Mast cells (¢) Osteocytes (GE 90 f Biology-x INCERT Exemplat| (©) Basophis l @) Chondrocytes15. 20. al. 23. 24. 2, 26, , Ifthe tip of sugarcane plant is removed fr ‘The dead element present in ¢ (a) companion cells (0 phloem parenchy he phloem is (H) phloem fibres (@) sieve tubes INCERT Exemplar] Which of the following does not lose thei ‘ . - their nucleus at maturity? — [VCE anpoe (a) Companion cells () Red blood cells (©) Vessel fee Siebel ; In desert plants, rate of water loss gets reduced due to the pres sence of (a) cuticle () stomata (lignin ou am RT Exemplar) , Along tree has several branch : suberin ier athe branches ir ches. The tissue that helps in the side ways conduction of (a) collenchyma INCERT Exemplar] (6) xylem parenchyma arenchyma (© P 7" (4) xylem vessels ‘om the field, even then it keeps on growing in length. It is due to the presence of INCERT Exemplar] (@ cambium te) tteral meristem (b) apical meristem nee (@) intercalary meristem Anail is inserted in the trunk of a tre. After 3 years, the nail will (@) move downwards (© remain at the same position ¢ ata height of 1 metre from the ground level. INCERT Exemplar} (®) move upwards (@) move sideways Parenchyma cells are INCERT Evemplar| (a) relatively unspecified and thin walled (6) thick walled and specialized (©) lignified (@) none of these Flexibility in plants is due to INCERT Exemplar] (@)collenchyma (#) sclerenchyma (© parenchyma (@) chlorenchyma Cork cells are made impervious to water and gases by the presence of (NCERT Exemplar] (@) cellulose () lipids (© suberin (@) lignin Survival of plants in terrestrial environment has been made possible by the presence of (NCERT Exemplar] (@) intercalary meristem (©) conducting tissue (apical meristem (@) parenchymatous tissue Choose the wrong statement [NCERT Exemplar] (a) The nature of matrix differs according to the function of the tissue. () Fats are stored below the skin and in between the internal organs. © Epithelial tissues have intercellular spaces between them. (@) Cells of striated muscles are multinucleate and unbranched. Find out incorrect sentence (NCERT Exemplar} (@) Parenchymatous tissues have intercellular spaces. (®) Collenchymatous tissues are irregularly thickened at corners. (©) Apical and intercalary meristems are permanent tissues. (4) Meristematic tissues, in its early stage, lack vacuoles. Tissue 1 9127. Which cell does not have perforated cell wall? INCERT Be (a) Trachieds (6) Companion cell (@) Sieve cells @ Vessels 28. Intestine absorbs the digested food materials. What type of epithelial Cells responsible for that? INCERT Exons (a) Stratified squamous epithelium (c) Spindle fibres 29. Meristematic tissues in plants are (a) Localised and permanent (©) Localised and dividing cells 30. Fats are stored in human body as (a) cuboidal epithelium (c) bones 31. Voluntary muscles are found in (a) Alimentary canal (b) Limbs 32. Which of the following helps in repair of tissue and fills up the space inside the "ily () Columnar epithelium (d Cuboidal epithelium INCERT Exemp, (6) not limited to certain regions | @ growing in volume (NCERT Exemplay (b) adipose tissue (a) cartilage [NCERT Exemplar (c) Iris of the eye (d@) Bronchi of lungs organ? INCERT Exemplar (@ Tendon (b) Adipose tissue (c) Areolar (d) Cartilage 33. The water conducting tissue generally present in gymnosperm is [NCERT Exemplar| (a) Vessels (b) Sieve tubes (c) Tracheids (d) Xylem fibres Answers LO) 20 30 4@ 50) 60 70 8) 9) 100 11.) 12() 13.6) 14d) 15.8) 16.(@)-«17.(a) 18.) 19.) 20.0) 21.(@) 22.(a)23.(c) 24.) 25. (ec) -26.(¢) 27.(a) —-28.(6) 29.6) 30.0) 31.) 82.0) 33.()artion-Reason Questions 4 questions con: t of vo statements — Assertion (A) and Reason (R), Answer these questions cing ppropriate option given below: 4 ib mesg tand Rare Que and Ris the correct explanation of 4 nd Rave true but Ris not the ¢ ae but Ris false ine but Ris true, tt , : , Assertion (A) ? Nervous tissue comprises of net ‘urons that receive and conduct impulses, All cells pos: reason (PR) s the ability to respond to stimuli. ; Assertion (A) : Blood is a fluid connective tis 1e Reason (R): Plasma in the blood is mostly water, 4, Assertion (A) : Simple epithelium tissue only a single layer of cells. Reason (R): Stratified epithelium rep: kin and oesophagus. 4, Assertion (4) : Parenchyma tissue are non-living, Reason (R): Parenchyma cells have intercellular spaces. . Assertion (A) : All the plant tissues divide throughout their lite. Reason (R): Meristematic tissues are localised in certain regions. 6, Assertion (A) : Striated muscles are attached to the bones in different body parts. Reason (R): These are independent of voluntary contol. Answers — ) 20 30) 4@ 5.@)) BO