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.
(a) (i) Tissue A is Blood.
Explanation: Blood is the liquid connective tissue that circulates in our body continuously without stopping.
(ii) Pigment B is Haemoglobin.
Explanation: Blood contains pigment Haemoglobin.
(iii) Colour C is Red.
Explanation: Blood contains pigment Haemoglobin that imparts a red colour to the blood.
(b) (i) Component D is White blood cells.
Explanation: WBC fights infection and protects us from diseases.
(ii) Component E is Platelets.
Explanation: Platelets helps in the clotting of tissue A if a person gets a cut.
(iii) Component F is Plasma.
Explanation: Plasma is a liquid which consists mainly of water with many substances dissolved in it.
(iv) Component G is Red blood cells.
Explanation: RBC carries oxygen from the lungs to all the parts of the body.
(c) Digested food is transported by tissue A (Blood) in the human body.
(d) E (platelets) and G (Red blood cells) are the cells without a nucleus.
(e) Amoeba and Grasshopper do not have liquid-like A (Blood) in their body.
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