Q. 973.7( 3 Votes )

The liquid connective tissue A circulates in our body continuously without stopping. This tissue contains a pigment B which imparts it a colour C. The tissue A consists of four components D, E, F and G. The component D fights infection and protects us from diseases. The component E helps in the clotting of tissue A if a person gets a cut. The component F is a liquid which consists mainly of water with many substances dissolved in it and component G carries oxygen from the lungs to all the parts of the body.

(a) What is (i) tissue A (ii) pigment B, and (iii) colour C ?

(b) Name (i) D (ii) E (iii) F, and (iv) G.

(c) Name one substance (other than oxygen) which is transported by tissue A in the human body.

(d) Which two components of tissue A are the cells without nucleus ?

(e) Name any two organisms (animals) which do not have liquid like A in their body.

Answer :

(a) (i) Blood (A) (ii) Haemoglobin (B) (iii)Red (C)

(b) (i) White blood cells (D) (ii) Platelets (E) (iii)Plasma (F) (iv) Red Blood Cells (G)

(c) Digested Food

(d) E (Platelets) and G (Red Blood Cells)

(e) Amoeba and Grasshopper

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PREVIOUSWater and dissolved minerals get into the root hair of a plant by a process called A and enter the conducting tissue B. The process C helps the water and dissolved minerals to move up through the tissue B in roots and stem, and reach the leaves of a plant. In the leaves food is made by a process D. This food is then transported to all the parts of a plant through tissue E. The process of distributing food made in the leaves to all the parts of the plant is called F.(a) What are (i) A (ii) B (iii) C (iv) D (v) E, and (vi) F ?(b) Which tissue is made up of living cells : B or E ?(c) Which tissue, B or E, contains sieve tubes?(d) Which tissue, B or E, contains tracheids ?NEXTThe human body has an organ A which acts as a double pump. The oxygenated blood coming from the lungs through a blood vessel B enters the upper left chamber C of the double pump. When chamber C contracts, then blood goes into lower left chamber D. The contraction of chamber D forces the blood to go into a blood vessel E which supplies oxygenated blood to all the organs of the body (except the lungs). The deoxygenated blood coming out of the body organs is taken by a blood vessel F to the right upper chamber G of pumping organ. Contraction of Chamber G forces the deoxygenated blood into right lower chamber H. And finally the contraction of chamber H sends the deoxygenated blood into lungs through a blood vessel I.(a) What is organ A ?(b) Name the blood vessel (i) B (ii) E (iii) F, and (iv) I.(c) What are chambers (i) C, and (i) D?(d) What are chambers (i) G and (ii) H ?
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