(a) Process :Products
Exudation/guttation; Resins, gums, latex, rubber, calcium oxalate, salts, water.
Transpiration/Diffusion; Water, carbon (IV) oxide, oxygen.
Deposition/leaf fall; Tanins, caffeine, morphine, nicotine, cocaine
(b) - Red blood cells/erythrocytes; carry oxygen; to all parts of the body/from lungs to the tissues;
- Transport carbon (IV) oxide; to the lungs from tissues (award only once for direction of either carbon (IV)
oxide or oxygen).
- Platelets/thrombocytes; produce an enzyme thrombokinase/thromboplastin; necessary for blood clotting;
- White blood cells/leucocytes/phagocytes;
- Produce antibodies/engulf pathogens; hence provide body defence against diseases/infections;
- Plasma; transport nutrients; hormones; heat; carbon (IV) oxide; nitrogenous wastes/urea; mineral ions;
fibrinogen/antibodies;
gregorymasila answered the question on February 23, 2018 at 12:13
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Describe the nitrogen cycle
(Solved)
Describe the nitrogen cycle
Date posted:
February 23, 2018
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Answers (1)
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(a) Describe the photosynthetic theory of opening and closing of the stomata.
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(Solved)
(a) Describe the photosynthetic theory of opening and closing of the stomata.
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Date posted:
February 23, 2018
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i) State the role of these organs when the concentration...
(Solved)
The pancreas and the liver work together in the regulation of glucose in the blood.
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Date posted:
February 23, 2018
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Date posted:
February 23, 2018
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Describe the uptake and movement of water from the soil to the leaves of a tall plant till transpiration
Date posted:
February 23, 2018
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State the functions of the following cell organelles. (i)Golgi apparatus (ii)Mitochondria
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Date posted:
February 19, 2018
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Date posted:
February 19, 2018
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Date posted:
February 19, 2018
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Date posted:
February 19, 2018
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Answers (1)
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Date posted:
February 19, 2018
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State the significance of sunken stomata in plants.
Date posted:
February 19, 2018
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Date posted:
February 19, 2018
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Date posted:
February 19, 2018
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(Solved)
(a) Name two divisions in the kingdom Plantae that show alternation of generation
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Date posted:
February 19, 2018
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Answers (1)
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(a) What is homeostasis? (b) Name three processes in the human body in which homeostasis is involved.
Date posted:
February 19, 2018
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Date posted:
February 19, 2018
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Distinguish between analogous and homologous structures
Date posted:
February 19, 2018
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Answers (1)
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(Solved)
How is the rate of diffusion affected by:
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Date posted:
February 19, 2018
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Answers (1)
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Distinguish between hypertonic and hypotonic solutions.
Date posted:
February 19, 2018
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Date posted:
February 19, 2018
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Answers (1)