Worksheet Transport in Living Organism | PDF | Blood | Artery - Free Printable

Problem Analysis:

The worksheet focuses on the transport mechanisms in living organisms, specifically addressing how substances are transported in simple organisms and plants. Let's solve each question step by step.

---

Question 1:

Simple organisms, such as the amoeba, excrete their waste products to the surroundings by _______.

- (A) diffusion
- (B) active transport
- (C) osmosis
- (D) capillary action

#### Explanation:
- Diffusion: The movement of molecules from an area of higher concentration to an area of lower concentration. This is a passive process.
- Active transport: The movement of molecules against their concentration gradient, requiring energy (ATP).
- Osmosis: The movement of water molecules across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.
- Capillary action: The movement of liquids along the surface of a material due to cohesive and adhesive forces.

For simple organisms like amoebas, waste products (e.g., carbon dioxide) are excreted through the cell membrane by diffusion. This is a passive process where waste moves out of the cell into the surrounding environment due to concentration gradients.

#### Correct Answer:
(A) diffusion

---

Question 2:

Water enters the root hairs of a plant by _______.

- (A) diffusion
- (B) absorption
- (C) osmosis
- (D) active transport

#### Explanation:
- Diffusion: Movement of molecules from high to low concentration.
- Absorption: A general term for taking up substances, but it does not specify the mechanism.
- Osmosis: The specific movement of water molecules across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.
- Active transport: Requires energy and moves substances against their concentration gradient.

Water enters root hairs through osmosis because the soil solution typically has a lower solute concentration than the cytoplasm of the root cells. This creates a concentration gradient that drives water into the root cells.

#### Correct Answer:
(C) osmosis

---

Question 3:

The xylem tissue in a flowering plant is responsible for the transport of ______.

- (A) water only
- (B) water and sugar
- (C) water and minerals
- (D) sugar and minerals

#### Explanation:
- Xylem: A vascular tissue in plants responsible for transporting water and dissolved minerals (e.g., nutrients) from the roots to the leaves and other parts of the plant.
- Phloem: Another vascular tissue responsible for transporting sugars (produced during photosynthesis) and other organic compounds throughout the plant.

Since xylem transports water and minerals, the correct answer is:

#### Correct Answer:
(C) water and minerals

---

Question 4:

Which of the following substances is carried in the phloem to the different parts of a flowering plant?

- (A) starch
- (B) minerals
- (C) sugar
- (D) salt

#### Explanation:
- Phloem: Responsible for transporting organic substances (e.g., sugars, amino acids) produced during photosynthesis to various parts of the plant.
- Xylem: Transports water and minerals.

Among the options:
- Starch: A storage form of sugar, but it is not directly transported in the phloem.
- Minerals: Transported by xylem, not phloem.
- Sugar: The primary substance transported by phloem.
- Salt: Not a major component transported by phloem.

#### Correct Answer:
(C) sugar

---

Question 5:

Which of the following does not form part of the human circulatory system?

This question is incomplete in the provided image. Please provide the options for this question so that I can solve it accurately.

---

Final Answers:

1. (A) diffusion
2. (C) osmosis
3. (C) water and minerals
4. (C) sugar

If you provide the options for Question 5, I can complete the solution.

Boxed Final Answers:
\[
\boxed{(A), (C), (C), (C)}
\]