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On: April 25, 2019
– Tadpole – Skin
– Cockroach – trachea
– Domestic fowl – lungs
– Talinum – stomata
– Earthworm – Skin
– Amoeba – cell membrane
– Large surface area
– Thin respiratory surface
– Moist surface
– Efficient transport system
The enormous energy of lightning breaks nitrogen molecules and enables their atoms to combine with oxygen in the air forming nitrogen oxides. These dissolve in rain, forming nitrates, that are carried to the earth.
This organism oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in bioremediation. They are important in the nitrogen cycle by increasing the availability of nitrogen to plants while limiting carbon dioxide fixation.
Azotobacter helps to synthesizes some biologically active substances, including some phytohormones such as auxins, thereby stimulating plant growth.
Meat type A and meat type D
They contain the lowest fat content.
Meat type C and meat type D.
-Proteins give energy.
A, C and D
A person deficient in protein suffers kwashiokor. Hence a diet with high content in protein is needed.
Meat type D
Meat type F
(i) for energy and heat to keep the body warm.
(ii) They are used as insulators to nerves and cell membranes.
(iii) Formation of cell membranes.
Drop the meat on a white paper observe the meat against a source of light, the far part becomes more translucent
-Mistletoe and cacao plant.
-Tapeworm in the gut of humans.
-Cattle and white egret.
-Flowers and honeybee
-Remora and shark.
(i) They have strong suckers and hooks.
(ii) They have large surface area for absorptions of nutrients.
(iii) They have thin and flattened shape.
[Pick any Two]
(i) They have blood loss.
(ii) They cause diarrhoea.
(iii) They cause severe loss of weight.
Saprophytes are mainly non-green plants which do not have chloroplasts and therefore cannot manufacture their own food.
[Pick any Four]
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