Answered

Life Sciences / Grade 11
Sekhukhune South / Population Ecology

1.2 Give the correct biological term for each of the following descriptions. Write only the term next to the question number (1.2.1 to 1.2.4) in the ANSWER BOOK.

1.2.1 Method of determination of population size by counting the individuals in a representative sample area

1.2.2 A symbiotic relationship in which one organism benefits and the other one is unaffected

1.2.3 Countries with a characteristic high birth rate and decreased life expectancy

1.2.4 Competition for resources within members of the same species

(1 × 4 = 4)

1.3 Indicate whether each of the statements in column I applies to A ONLY, B ONLY, BOTH A and B, OR NONE of the items in column II. Write A ONLY, B ONLY, BOTH A and B, OR NONE next to the question numbers (1.3.1 to 1.3.3) in the ANSWER BOOK.

[tex]\[
\begin{array}{|c|c|}
\hline \text{COLUMN I} & \text{COLUMN II} \\
\hline \begin{array}{l}
1.3.1 \text{The maximum number of individuals in a population that can be supported by the environment}
\end{array} & \text{A. Carrying capacity} \\
\hline \begin{array}{l}
1.3.2 \text{The series of changes in an ecosystem community from bare rock to a forest}
\end{array} & \text{B. Limiting factor} \\
\hline \begin{array}{l}
1.3.3 \text{An example of social organization that increases the chances of survival}
\end{array} & \begin{array}{l}
\text{A. Division of labour in bees}
\end{array} \\
\hline
\end{array}
\][/tex]

(3 × 2 = 6)



Answer :

GinnyAnswer
Sure! Let's go through each sub-question step-by-step to determine the correct answers.

### Section 1.2: Biological Terms
1.2.1 Method of determination of population size by counting the individuals in a representative sample area.
- The term for this method is "Sampling".

1.2.2 A symbiotic relationship in which one organism benefits and the other one is unaffected.
- The term for this kind of relationship is "Commensalism".

1.2.3 Countries with a characteristic high birth rate and decreased life expectancy.
- These countries are often referred to as "Developing countries".

1.2.4 Competition for resources within members of the same species.
- This type of competition is known as "Intraspecific competition".

### Summary for Section 1.2:
- 1.2.1: Sampling
- 1.2.2: Commensalism
- 1.2.3: Developing countries
- 1.2.4: Intraspecific competition

### Section 1.3: Statements and Corresponding Categories
1.3.1 The maximum number of individuals in a population that can be supported by the environment.
- This concept corresponds to A ONLY (Carrying capacity).

1.3.2 The series of changes in an ecosystem community from bare rock to a forest.
- This process is ecological succession, which does not directly relate to either "Carrying capacity" or "Limiting factor" specifically. So, the answer is NONE.

1.3.3 An example of social organization that increases the chances of survival.
- An example of this is A ONLY (Division of labour in bees).

### Summary for Section 1.3:
- 1.3.1: A ONLY
- 1.3.2: NONE
- 1.3.3: A ONLY

These are the detailed answers based on the provided questions.

### Final Answer:
1.2:
- 1.2.1: Sampling
- 1.2.2: Commensalism
- 1.2.3: Developing countries
- 1.2.4: Intraspecific competition

1.3:
- 1.3.1: A ONLY
- 1.3.2: NONE
- 1.3.3: A ONLY

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