Question 1

Question 1Distinguish between following pairs with reference to what is asked in the brackets.(a) Parenchyma and Collenchyma (cellular structure)(b) Meristematic and Permanent tissue (cell division)(c) Blood and Lymph (cellular components)(d) Bone and Cartilage (porosity)(e) Voluntary and Involuntary muscles (shape and cellular structure)

Accepted Answer

(a) Difference between Parenchyma and Collenchyma (cellular structure):ParenchymaCollenchymaCell is large with thin cell walls having one large vacuole. Cells are oval, circular and polygonal.Elongated cells with thick cell walls. Cell walls thickened at corners.(b) Difference between Meristematic and Permanent tissue (cell division):Meristematic tissuePermanent tissueCells divide and result in growth.Cells cannot divide.(c) Difference between Blood and Lymph (cellular components):BloodLymphBlood consists of plasma, red blood cells, white blood cells and platelets.Lymph consists of plasma and white blood cells.(d) Difference between Bone and Cartilage (porosity):BoneCartilageBone is porous.Cartilage is non-porous.(e) Difference between Voluntary and Involuntary muscles (shape and cellular structure):Involuntary muscle cellsVoluntary muscle cellsSpindle shaped and small cells.Cylindrical and long cells.Uni-nucleated cells.Multi-nucleated cells.Striations are absent.Striations are present.

Question 2

Question 2What is the difference between-Cell and tissue?Organ and organism?Organ and organelle?Organ and organ system?

Accepted Answer

Cell and TissueCellTissueStructural and functional units of living entities. They are the building blocks of life.Cluster of cells performing a specific function.Example – Nerve cell.Example – Connective tissue.Organ and OrganismOrganOrganismMultiple tissues make up for an organ. They perform functions within the body.Several organ systems (constituted by organs) make up for an organism.Example - HeartExample – animals/humansOrgan and OrganelleOrganOrganelleMultiple tissues make up for an organ.They perform functions within the body.It is a portion/section of a cell that has a certain function.Example - HeartExample – Ribosome, LysosomesOrgan and Organ SystemOrganOrgan SystemMultiple tissues make up for an organ. They perform functions within the body.Several organs together performing a specific life process form an organ system.Example - HeartExample – Circulatory system

Question 3

Question 1(vii)Which of the following connects a muscle to a bone?CartilageLigamentTendonInterstitial fluid

Accepted Answer

TendonReason — Tendons are connective tissue that connect a muscle to a bone.

Question 4

Question 1(viii)Which of the following tissues is richly found in the tear gland ?Ciliated epitheliumCuboidal epitheliumSquamous epitheliumGlandular epithelium

Accepted Answer

Glandular epitheliumReason — The cells that release secretion, consist of Glandular epithelium.

Question 5

Question 1(ix)Which one of the following tissues helps in the growth of plants lengthwise?Lateral meristemApical meristemParenchymaCollenchyma

Accepted Answer

Apical meristemReason — Apical meristem helps in the growth of plants lengthwise.

Question 6

Question 1(x)Cardiac muscle is:InvoluntarySmoothStriatedInvoluntary and Striated.

Accepted Answer

Involuntary and Striated.Reason — Cardiac muscles are involuntary in function. The fibres of cardiac muscles are striated, uninucleated and branched.

Question 7

Question 1(xi)Animals have two kinds of supportive connective tissue. The type which has a good supply of blood vessels and nerves is (P) ............... whereas the one which has no blood vessels or nerves is (Q) ............... .P — Cartilage, Q — BoneP — Areolar tissue, Q — Adipose tissueP — Adipose tissue, Q — Areolar tissueP — Bone, Q — Cartilage

Accepted Answer

P — Bone, Q — CartilageReason — Bone is a supportive connective tissue which has a rich supply of blood vessels and nerves, while cartilage lacks blood vessels and nerves, which is why it heals slowly.

Question 8

Question 1(xii)A biology teacher asked her students to give two specific characteristic features of cardiac muscles.Neeta said: Striated and involuntary.Nitesh said: Unstriated and unbranched.Isha said: Striated and branched.Kabeer said: Unstriated and voluntary.Who were correct?Neeta and NiteshNeeta and IshaIsha and KabeerNitesh and Kabeer

Accepted Answer

Neeta and IshaReason — Cardiac muscles are striated (having light and dark bands), involuntary (works without conscious control) and branched.

Question 9

Question 1(xiii)Deepali tried to match the kind of supporting tissues in plants with their characteristic features.She tabulated the pairs as follows:Supporting tissueCellular structurePDead cells, have thick walls due to deposition of ligninQElongated cells, cell wall is thickened at the cornersIdentify P and QP — Collenchyma, Q — SclerenchymaP — Sclerenchyma, Q — CollenchymaP — Parenchyma, Q — SclerenchymaP — Collenchyma, Q — Parenchyma

Accepted Answer

P — Sclerenchyma, Q — CollenchymaReason — Sclerenchyma is made of dead cells. Cell walls are thickened with lignin, making them rigid and supportive. Collenchyma is made of living cells and are elongated. Cell walls are unevenly thickened at the corners, providing flexible support.

Question 10

Question 3The figures (A and B) given below are two kinds of animal tissues. Study the figures and answer the following questions:Identify the tissue A and B.Label all the guidelines marked in the figures A and B.Write one common function of both the tissues A and B.Mention one functional difference between A and B.Write one specific location of each (A and B) in human body.

Accepted Answer

Tissue A is Cartilage. Tissue B is Bone.Fig. A1 → Matrix2 → CellFig. B1 → Concentric Lamellae2 → Haversian Canal3 → Bone cellCommon function of both the tissue is providing support.Cartilage provides support to flexible and elastic parts of body like trachea while bone is hard and provides structural support to the body.A → Bronchial tubesB → Ribs

Question 11

Question 4What are the two kinds of fibrous connective tissue?Write one important function of each.Draw a neat diagram of fibrous connective tissue. Label its four important parts.

Accepted Answer

Tendons and Ligaments are two fibrous connective tissue.Tendons connect muscles to bones. Ligaments connect bone to bone.Below diagram shows fibrous connective tissue with four of its important parts labelled:

Question 12

Question 5Sandesh observed a slide containing the longitudinal section of a plant tissue found in all parts of the plant like-root, stem and leaves. Different types of cells are visible in the tissue as shown alongside in the diagram:(a) Identify and name the kind of tissue shown above. Is it a kind of simple permanent tissue or complex tissue ?(b) Distinguish between simple permanent tissue and complex permanent tissue.(c) Write one important role of the above mentioned tissue.

Accepted Answer

(a) Phloem tissue. It is a complex permanent tissue.(b)Simple permanent tissueComplex permanent tissueMade up of only one type of similar cellsMade up of more than one type of cellsPerforms a single function like support or storagePerforms multiple functions, mainly transportAll cells are similar in structure and functionCells are different in structure and functionFound in every part of plantFound in vascular region of plantExamples: Parenchyma, Collenchyma, SclerenchymaExamples: Xylem, Phloem(c) The role of phloem is transportation of food from the leaves to all parts of the plant.

Question 13

Question 6Name the kinds of cells found in the following places:Salivary glandBrainSurface of the human skinInner lining of the wind pipe

Accepted Answer

The cells present in the salivary gland are cuboidal epithelium cells.The cells present in the brain are Neuron.The cells present in the surface of the human skin are simple epithelium cells.The cells present in the inner lining of the wind pipe are ciliated columnar epithelium cells.

Tissues: Plant and Animal Tissues

Long Answer Type

Multiple Choice Type

Structuredapplication Questions

Very Short Answer Type