Saturday, June 16, 2012

CBSE 9th Biology - Ch:06-Tissues Solved Questions

Q1. Which tissue protects the entire body?

Answer: Epithelial tissue

Q2.Give one example each of: 

Answer
1. Squamous epithelium (simple) - cheek cells
2. Columnar epithelium - intestine

Q3.Give one example of connective tissue in which matrix is solid?

Answer : Bone 

Q4. Name the following: 

Ans:
1. Multinucleate muscle fibre: - skeletal muscle fibre
2. Spindle shaped muscle fibre: - smooth muscle fibre
3. Tissue which stores fats: - adipose
4. Process of neuron, which carries impulse: -axon

Q5.Name one structure in your body, which bears ciliated epithelium.

Answer: Respiratory tract

Q6.What is aerenchyma?

Ans: It is a specialized parenchyma found in aquatic plants which consists of network of small cells that enclose air cavities.

Q7.What is the difference between simple plant tissue and simple animal tissue?

Ans: SIMPLE PLANT TISSUE         SIMPLE ANIMAL TISSUE
1. Consists of same type of Cells.       Consists of one or more types of Cells.

2. Arrangement varies.                         Arranged in a single layer.


Q8.What is the utility of tissues in multicellular organisms?

Answer: 1.Division of labour 2. Higher organization 3. Higher survival

Q9.What is a synapse

Answer: Junction between two neurons.

Q10.Where is apical meristem found?

Answer: Root and stem tips

Q11. Identify the type of tissue in the following?

Answer: 
 1. Skin - epithelial 
 2. Bark - cork 
 3. Bone - connective
4. Lining of kidney tubules - epithelial 
 5. Vascular bundle - xylem and phloem

Q12. What is the role of epidermis?

Answer: a. Protection 
 b. Regulates transpiration 
 c. Exchange of gases

Q13.What will happen if apical meristem is damaged?

Ans:Growth in length will stop.

Q14.What are the components of phloem?

Ans:
1. Phloem parenchyma 2. Phloem fibres 3. Sieve tubes 4. Companion cells

Q15.Name all simple plant tissues?

Ans:1. Parenchyma 2. Collenchyma 3. Sclerenchyma

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