Tissues & Others Level of Organization : 12th Class Biology Question Answer Lesson 5 – NIOS

Tissues & Others Level of Organization : 12th Class Biology Question Answer Lesson 5 – NIOS

INTEXT QUESTIONS 5.1

1. Define a tissue.
   Ans. a group of cells with similar origin, structure and function
   
2. Give one word equivalent for the following :
   (i) A plant tissue that consists of cells which continue to divide to produce
   more cells.- Merisematic
   (ii) The meristematic tissue responsible for the increase in thickness of the stem of a tree.- Lateral Meristem
   (iii) The kind of plant tissues which consists of all similar cells – Simple
   (iv) The category of plant tissues in which the cells do not divide – Permanent
   
3. What do you mean by “cells of a tissue have similar origin”?
   Ans. arising from same embryonic layer of cells
   
4. Name that branch of Biology in which tissues are studied?
   Ans. Histology
   
5. What is a complex tissue?
   Ans. composed of more than one type of cells all cooperating in performing common function
   
6. Mention any two special features of the meristematic cells.
   Ans. >> The cells may be rounded, oval or polygonal; always living and thin-walled.
   >> Each cell has abundant cytoplasm and a prominent nucleus in it.

INTEXT QUESTIONS 5.2

1. Give Two characteristics and one example of the location of the given tissuesin plants in the following table:
   

S. No.	Tissues	Characteristics	Example of location
1.	Parenchyma	1. Round cells 2. Living	Root, stem and leaves
2.	Collenchyma	1. Polygonal cells with thickenings at corners. 2. Living	Petiole and Mid-rib of leaves
3.	Sclerenchyma	1. elongated and irregular in shape 2. Dead and thicked walled	Woody Stems

1. 
   
2. Name the plant tissues which
   (i) conduct water – Xylem
   (ii) conduct food metabolites – Phloem

INTEXT QUESTIONS 5.3

1. List the different types of animal tissues
   Ans. Epithelial, connective, muscular, nervous
   
2. Match the items in Column I with those in Column II by writing the
   corresponding serial number within brackets.
   Column I Column II
   (a) Compound Epithelium ( ) (i) Epithelial tissue
   (b) Basement membrane ( ) (ii) For increasing the surface area
   (c) Brush-bordered epithelium ( ) (iii) Lining of trachea
   (d) Salivary gland ( ) (iv) Skin
   (e) Ciliated Epithelium ( ) (v) Cuboidal epithelium
   Ans. a-iv, b-i, c-ii, e-iii

INTEXT QUESTIONS 5.4

1. Name the different types of cells found in the different types of connective tissue.
   Ans. Firbroblasts – areolar
   Macrophages – areolar
   Mast cells – areolar
   Cartilage cells / chondrocyte –chondrocyte-cartilage
   Bone cells/osteocyte – bone
   Blood cells/WBC RBC – blood
   
2. Match the item in Column I with those in Column II, by writing the
   corresponding serial number within brackets:
   Column I Column II
   a. Unstripped muscles ( ) (i) multinucleate
   b. Myofibrils ( ) (ii) run parallel to each other in a striped
   muscle
   c. Sarcolemma ( ) (iii) cardiac muscles
   d. Striped muscle ( ) (iv) outer tough membrane of a striped muscle
   fibre
   e. Branched myofibrils ( ) (v) involuntary
   Ans. a (v); (b) (ii); c (iv); d (i); e. (iii)

INTEXT QUESTIONS 5.5

1. What is the function of the nervous tissue?
   Ans. Sensory
   
2. What is the direction of the “flow of impulse” within a nerve cell from its
   dendrites to its axon end or from its axon end toward its dendrites?
   Ans. Dendrite to the axon
   
3. What are the following parts in a nerve cell?
   (i) Cyton – cell-body
   (ii) Dendrite – thin processes of cyton
   (iii) Axon – Sensory Fibre
   (iv) Medullary sheath – medullary layer
   (v) Node of Ranvier – interruptions in medullary sheath

INTEXT QUESTIONS 5.6

1. Rearrange the following levels of organizations in their correct sequences:-
   tissue, cell, organ, organism, organ system.
   Ans. Cell, tissue, organ, organ system, organism

NIOS 12th class biology Q Ans

• Origin and Evolution of Life & Classification : 12th Class Biology Notes – NIOS
• The Kingdoms Monera, Protista & Fungi : 12th Class Biology Notes – NIOS
• Kingdoms Plantae & Animalia : 12th Class Biology Question Answer Lesson 3 – NIOS
• Cell Structure & Function : 12th Class Biology Question Answer Lesson 4 – NIOS

I hope you liked this post (Tissues and others level of organization). Be sure to subscribe to receive all new posts from this blog straight to your email inbox. Like my Facebook page to get notifications of similar posts on Facebook.

If you have any problem in understanding –Tissues & Others Level of Organization : 12th Class Biology Question Answer Lesson 5 – NIOS, then write in the comment box below.