Class 11 Biology - Chapter Body Fluids and Circulation NCERT Solutions | Why do we consider blood as a connective
Why do we consider blood as a connective tissue?
Connective tissues have cells scattered throughout an extra-cellular matrix. They connect different body systems. Blood is considered as a type of connective tissue because of two reasons.
(i) Like the other connective tissues, blood is mesodermal in origin.
(ii) It connects the body systems, transports oxygen and nutrients to all the parts of the body, and removes the waste products. Blood has an extra-cellular matrix called plasma, with red blood cells, white blood cells, and platelets floating in it.
More Questions From Class 11 Biology - Chapter Body Fluids and Circulation
- Q:- Draw a standard ECG and explain the different segments in it.
- Q:-
What is meant by double circulation? What is its significance?
- Q:- Describe the evolutionary change in the pattern of heart among the vertebrates.
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Name the components of the formed elements in the blood and mention one major function of each of them.
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- Q:-
What is the difference between lymph and blood?
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- Q:- Sino-atrial node is called the pacemaker of our heart. Why?
- Q:- What is the importance of plasma proteins?
- Q:- Define a cardiac cycle and the cardiac output.
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Which of the following is not correct?
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Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell. - Q:-
New cells generate from (a) bacterial fermentation (b) regeneration of old cells (c) pre-existing cells (d) abiotic materials
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(b) Every mineral element that is present in a cell is needed by the cell.
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Mention the ploidy of the following:
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leaf cell of a moss;
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meristem cell of monocot,
ovum of a liverwort, and
zygote of a fern.
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(b) The number of phalanges in each limb of human is __________
(c) Thin filament of myofibril contains 2 F actins and two other proteins namely __________ and __________.
(d) In a muscle fibre Ca++ is stored in __________
(e) __________ and __________ pairs of ribs are called floating ribs.
(f) The human cranium is made of __________ bones. - Q:- Describe the internal structure of a dorsiventral leaf with the help of labelled diagrams.
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