CBSE Class 9th (IX) chapter 06 Tissues [Biology term-01] Board Guess Questions with solution
Q. Name the element(s) of xylem which (i) help in transport of water and minerals, (ii) stores food, and (iii) provides mechanical support
Ans: (i) tracheids and vessels (ii) xylem parenchyma (iii) xylem fibres
Q. (a) State the constituents of phloem ? (b) How does cork act as a protective tissue ?
(a) Constituents of phloem are :
(1) Sieve tubes (2) Companian cells (3) Phloem fibres (4) Phloem parenchyma
(b) Cells of cork are dead and compactly arranged without intercellular space and hence do not allow entry of pathogens.
Moreover they have a chemical called suberin in their walls that makes them impervious to gases and water.
Q. Which tissue makes up the husk of coconut?
Ans: The husk of a coconut is made up of sclerenchyma tissue.
Q. Name the tissue responsible for movement in our body.
Ans: Themuscular tissue is responsible for movement in our body
Q. Give one reason for the following statements :
(a) The blood is called connective tissue.
(b) Muscles are able to contract and relax to bring about movements.
(c) Muscles of heart are called involuntary muscles.
Ans: (a) Blood flows to transport gases, digested food, hormones and waste materials to different parts of the body.
(b) Muscles contain special proteins called contractile proteins, which contract and relax to cause movements.
(c) Muscles of heart show rhythmic contraction and relaxation throughout life without getting fatigued.
Q. List any two differences between striated and cardiac muscle with respect to their structure and location.
1. The cells striated muscles are long, cylindrical unbranched and multinucleated.
2. Striated muscles are present in our limbs and join the bones.
1. The cells of cardiac muscles are cylindrical, branched and uninucleated.
2. These muscles are present in the heart.
Q. (i) Draw a labelled diagram of longitudinal section of parenchyma. (ii) Write three functions of parenchyma cells.
Ans: Figure No. 1.4 NCERT
(a) It provides support to plants. (b) It also stores food (c) In aquatic plants parenchyma cells filled with air helps in buoyancy.
Q. Mention the type of tissue which
(a) enables the plant to transport food material from leaves to other parts of its body.
(b) helps in the growth of girth of the stem ?
(c) helps in the transport of water from the root to other parts ?
(d) provides support to plants and also stores food ?
Ans: (a) Phloem (b) Cambium, or lateral meristem (c) Xylem (d) Parenchyma
Q. (a) Name the two types of complex tissues.
(b) Draw a neat diagram of the section of the tissue that is responsible for the translocation of food from the leaves to the different parts of the plant ?
Ans: Xylem and Phloem (a) Dia. On page 73 fig. 6.7of NCERT.
Q. Write one important functional difference between Striated and Smooth muscle tissue and draw a labeled diagram of the muscle tissue that shows rhythmic contraction and relaxation throughout life.
Ans: Striated muscles â This tissue is responsible for voluntary actions like movement of limbs in our body. Smooth muscles â This tissue is responsible for involuntary actions like movement of food in alimentary canal in our body, also found in the iris of the eye, ureters and bronchi. (any one) I Cardiac muscle tissue dia. (c) page.77 fig. 6.11
Q. Where is apical meristem found?
Ans: Apical meristem is present at the growing tips of stems and roots. Their main function is to initiate growth in new cells of seedlings, at the tip of roots, and shoots.
Q. What are the functions of areolar tissue?
Functions of areolar tissue:
(i) It helps in supporting internal organs.
(ii) It helps in repairing the tissues of the skin and muscles.
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