1 answer
(click or scroll down)
Bot GPT 4-o mini ### SECTION A
#### QUESTION 1 [15 marks]
1.1 Various options are provided as possible answers to the following questions. Choose the correct answer and write only the letter (A to D) next to the question number (1.1.1 to 1.1.3), for example, 1.1.3. E
**Question 1.1.1 [2 marks]**
The hormone aldosterone regulates the concentration of …
**C sodium ions**
**Question 1.1.2 [2 marks]**
Which ONE of the following substances is excreted by the skin, lungs and kidneys?
**C water**
**Question 1.1.3 [2 marks]**
Which ONE of the following represents density-dependent and density-independent factors respectively?
**A Disease and competition Flood and drought**
---
**Question 1.2**
Give the correct biological term for each of the following descriptions. Write only the term next to the question number (1.2.1–1.2.5).
**Question 1.2.1 [1 mark]**
The control of water content in the blood
**Osmoregulation**
**Question 1.2.2 [1 mark]**
Movement of individuals of a population out of a habitat
**Emigration**
**Question 1.2.3 [1 mark]**
The blood vessel that carries oxygenated blood filled with waste to the kidney
**Renal vein**
**Question 1.2.4 [1 mark]**
A triangular box that is made of cartilage and contains the vocal cords
**Larynx**
**Question 1.2.5 [1 mark]**
The common name for a condition known as allergic rhinitis
**Hay fever**
---
**Questions 1.3.1 and 1.3.2 (4 marks)**
Indicate whether each of the descriptions in Column I applies to A ONLY, B ONLY, BOTH A and B or NONE of the items in Column II. Only write A, B, BOTH or NONE next to the question number (1.3.1–1.3.2)
**COLUMN I** | **COLUMN II**
--- | ---
1.3.1 Malpighian body | A
| B
| Glomerulus
| Renal tubule
**1.3.1**
**
**1.3.2 Indirect counting techniques** | A
| B
| Mark-recapture method
| Quadrat method
**1.3.2**
**B**