Transportation In Animals and Plants class 7 worksheet - Free Printable

Problem Analysis:

The task involves answering questions about transportation in animals and plants, defining terms, and labeling a diagram. Let's solve each part step by step.

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Part 1: Choose the correct answer

#### Question A: Which of the following connect the arteries and veins?
- Options:
- a. Sieve tubes
- b. Septum
- c. Capillaries
- d. Nephrons

Explanation:
- Arteries carry blood away from the heart to various parts of the body.
- Veins carry blood back to the heart.
- Capillaries are the smallest blood vessels that connect arteries to veins. They allow for the exchange of nutrients, oxygen, and waste products between blood and tissues.

Correct Answer:
c. Capillaries

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#### Question B: The process of transportation of glucose in a plant is called.
- Options:
- a. Osmosis
- b. Transpiration
- c. Respiration
- d. Translocation

Explanation:
- Osmosis is the movement of water across a semipermeable membrane.
- Transpiration is the loss of water vapor from plant leaves.
- Respiration is the process of breaking down glucose to release energy.
- Translocation is the transport of sugars (glucose) and other substances through the phloem in plants.

Correct Answer:
d. Translocation

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#### Question C: The clot is formed because of the presence of another type of cells in the blood, called.
- Options:
- a. Platelets
- b. White blood cells
- c. Ventricles
- d. None of these

Explanation:
- Platelets are small cell fragments in the blood that help form clots to stop bleeding when a blood vessel is damaged.
- White blood cells are involved in the immune response but do not form clots.
- Ventricles are chambers of the heart, not blood cells.

Correct Answer:
a. Platelets

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Part 2: Define

#### Option a: Plasma
- Definition: Plasma is the liquid component of blood in which blood cells (red blood cells, white blood cells, and platelets) are suspended. It consists mainly of water and contains dissolved substances such as proteins, glucose, hormones, electrolytes, and waste products.

#### Option b: Xylem
- Definition: Xylem is a vascular tissue in plants responsible for transporting water and dissolved minerals from the roots to the leaves and other parts of the plant. It also provides structural support to the plant.

#### Option c: Excretory system
- Definition: The excretory system is a group of organs in animals that removes waste products and excess substances from the body, maintaining internal balance (homeostasis). In humans, it includes the kidneys, ureters, bladder, and urethra.

#### Option d: Dialysis
- Definition: Dialysis is a medical procedure that performs the functions of the kidneys when they fail. It filters waste products, excess fluids, and electrolytes from the blood, helping to maintain proper levels of chemicals in the body.

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Part 3: Label the diagram and write the function of each

The diagram shows a kidney with labeled parts. Let’s identify and explain the labeled parts:

#### Label A: Kidney
- Function: The kidney is an organ responsible for filtering waste products, excess salts, and water from the blood. It produces urine, which is then transported to the bladder for storage and eventual elimination.

#### Label B: Ureter
- Function: The ureter is a tube that carries urine from the kidney to the bladder. There are two ureters, one connected to each kidney.

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Final Answer Summary:

1. Choose the correct answer:
- A. c. Capillaries
- B. d. Translocation
- C. a. Platelets

2. Define:
- a. Plasma: The liquid component of blood containing dissolved substances.
- b. Xylem: Vascular tissue in plants for transporting water and minerals.
- c. Excretory system: Organs that remove waste products and maintain homeostasis.
- d. Dialysis: A medical procedure to filter blood when kidneys fail.

3. Label the diagram and write the function of each:
- A: Kidney – Filters blood and produces urine.
- B: Ureter – Carries urine from the kidney to the bladder.

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Final Boxed Answer:

\[
\boxed{
\text{1. A: c, B: d, C: a} \\
\text{2. Definitions provided above.} \\
\text{3. A: Kidney (filters blood), B: Ureter (carries urine).}
}
\]