Explanation

(a)(i) Biosphere: Total/whole area, part of the earth/lithosphere/ hydrosphere/water, and atmosphere/air, inhabitable by living things/where life exists.

(ii) Habitat: A place/home; within an environment, where an organism naturally lives/dwells.

(b) Mode of nutrition of named carnivorous plants:

• - Carnivorous plants have green leaves and are able to manufacture their own food carry out photosynthesis.
• They have roots to absorb water and mineral salts from the soil.
• Usually grow in places with little nitrogenous salts.
• Use insects/other small animals as source of Nitrogen.
• They have devices/modified leaves with bright colour/sents/sugary liquids/stcky wet surfaces for attracting and trapping insects.
• Once the insects is trapped, the plant secretes enzymes to kill and digest it.
• The soluble nitrogenous compounds are absorbed/assimilated by the plant.

Name of carnivourous plants: -

• Butterwort/Pinquicula
• Bladderwort/ Utricularia
• Sundew/Drosera
• Venus fly-trap/Dionaea
• Pitcher plants/Nepenthes/Sarracenta.

(c) Importance of fruits and seed dispersal: -

• Prevents overcrowding of plants.
• Prevents undersirable competition for space/light/water and nutrients.
• Prevents diseases from spreading among plant species.
• Results in colonization of new areas with new plants.
• Results in adaptation to adverse/harsh/unsuitable environment.

(d) Soil conservation method: -

• Contour ploughing/ridges are made along the contour of a slopping land/to prevent water running down the hill/slope/and washing away soil.
• Strip cultivation/the land is divided into strips along the contours of the slopes/crops are planted in rows that alternate with the strips planted with cover crops/grasses.
• Terracing/constriction of terraces which create barriers to hinder rapid water flow down the slope.
• Mulching/materials left after weeding or harvest are left to lie on the soil/ protecting the soil against agents of erosion.
• Afforestation/cover cropping/growing grasses, trees and shrubs to cover and protect the soil.
• Crop rotation/growing crops on a piece of land in sequence/season after season to maintain its fertility.
• Storm drains/construction of barriers/to stop free-flow of surface water through farms.
• Application of manure/fertilizer/to stabilize the soil.
• Avoid bush burning.
• Avoid over grazing. 

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