Chapters 24 & 25

Obtaining Food in Animals & Plants

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1. Many animals show distinct behaviour patterns when for food.

2. Such behaviour tends to increase the animal’s chance of gaining maximum net .

3. To be economical an animal must forage with respect to search and pursuit , type of food selected and of food selected.

4. competition occurs between members of the same species; competition occurs between members of different species.

5. Intraspecific competition for territories is called . It spaces out a population in relation to available supply.

6. Dominance amongst the members of a social group involves lower ranking individuals acknowledging the status of those with higher . They do this by showing responses to the latter’s threat displays. This behaviour conserves energy and ensures experienced .

7. hunting benefits all the members of a group since all the animals gain more food than they would hunting on their own.

8. Animals are mobile but plants are . This normally poses no problem for plants since their immediate environment provides all the raw needed for survival.

9. Intraspecific competition exists amongst the members of a dense population of plants for , water and soil .

10. Interspecific competition between plants tends to be less than intraspecific competition because different species often have different .

11. Moderate grazing of grassland by rabbits maintains species since dominant plants are held in .

12. Compensation point is that low level of light at which the rate of photosynthesis in a plant exactly equals the rate of . A shade plant is found to have its point at a lower intensity of light than a plant.