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Practice Class 7 Science MCQ Questions with Answers based on the latest NCERT syllabus. Learn about xylem, phloem, heartbeat, excretion, white blood cells, and blood plasma with original concept-based explanations, exam-focused notes, and NCERT-aligned content for CBSE and State Board students.
Do You Know
Chapter Information
Subject: Science
Class: 7
Chapter: Transportation in Animals and Plants
Question Type: Multiple Choice Questions (MCQs)
Difficulty Level: Easy to Moderate
Based On: Latest NCERT Syllabus
Introduction
Transportation is an essential life process that enables the movement of water, minerals, food, gases, and waste materials within living organisms. In plants, xylem and phloem transport water, minerals, and food, while in animals, blood circulates oxygen, nutrients, and waste products. Understanding these transport systems helps students build a strong foundation in Biology.
What You Will Learn
✔ Xylem and phloem
✔ Transport of food and minerals in plants
✔ Heartbeat
✔ Excretion
✔ White blood cells (WBC)
✔ Blood plasma
Why This Topic Is Important?
Transportation systems keep plants and animals alive by supplying essential materials to cells and removing waste products. These concepts are frequently tested in CBSE, State Board, Olympiad, and scholarship examinations.
Exam Relevance
These questions are useful for:
✔ CBSE Exams
✔ State Board Exams
✔ School Tests
✔ Unit Tests
✔ Half-Yearly Exams
✔ Annual Exams
✔ Olympiad Preparation
✔ Scholarship Examinations
Q1. The vascular tissue for the transport of nutrients in the plant is:
A) Xylem
B) Root hair
C) Stomata
D) Phloem
Answer
Phloem
Concept
Plants contain specialized vascular tissues for transporting different substances.
Explanation
Phloem transports the food prepared in the leaves to all parts of the plant. The food mainly consists of sugars produced during photosynthesis. In contrast, xylem carries water and minerals from the roots to the rest of the plant.
Exam Focus
Remember:
- Xylem → Water and minerals
- Phloem → Food and nutrients
Q2. The rhythmic contraction and expansion of the heart is called:
A) Respiration rate
B) Heartbeat
C) Blood pressure
D) Pulse rate
Answer
Heartbeat
Concept
The heart works continuously by contracting and relaxing rhythmically.
Explanation
A heartbeat is one complete cycle of contraction and relaxation of the heart muscles. This rhythmic action pumps blood throughout the body, supplying oxygen and nutrients to tissues and removing waste products.
Exam Focus
Remember: Heartbeat = Rhythmic contraction and relaxation of the heart.
Q3. The process of removal of waste products produced in the cells is called:
A) Excretion
B) Nutrition
C) Circulation
D) Digestion
Answer
Excretion
Concept
Living organisms continuously produce waste substances during metabolic activities.
Explanation
Excretion is the biological process of removing waste products such as urea, carbon dioxide, and excess water from the body. This process helps maintain a healthy internal environment.
Exam Focus
Remember: Excretion removes metabolic waste from the body.
Q4. Which cells in the blood help in fighting germs?
A) Platelets
B) Red Blood Cells (RBC)
C) Plasma
D) White Blood Cells (WBC)
Answer
White Blood Cells (WBC)
Concept
Blood contains different types of cells with specialized functions.
Explanation
White Blood Cells (WBCs) protect the body by destroying harmful microorganisms and supporting the immune system. They help the body fight infections and diseases.
Exam Focus
Remember: WBCs are the body’s natural defence cells.
Q5. The fluid part of the blood is called:
A) RBC
B) Plasma
C) Platelets
D) Hemoglobin
Answer
Plasma
Concept
Blood is made up of cells suspended in a liquid medium.
Explanation
Plasma is the pale yellow liquid component of blood. It transports nutrients, hormones, proteins, carbon dioxide, and waste materials throughout the body while carrying blood cells.
Exam Focus
Remember: Plasma is the liquid portion of blood.
Important Concepts
1. Xylem
Functions:
- Transports water from roots to leaves.
- Carries dissolved minerals.
- Provides mechanical support to the plant.
2. Phloem
Functions:
- Transports food prepared in leaves.
- Distributes nutrients to growing and storage tissues.
3. Heartbeat
- Rhythmic contraction and relaxation of the heart.
- Pumps blood throughout the body.
4. Excretion
Purpose:
- Removes metabolic waste.
- Maintains internal balance in the body.
5. White Blood Cells (WBC)
Functions:
- Fight disease-causing germs.
- Protect the body from infections.
- Form an important part of the immune system.
6. Plasma
Functions:
- Transports nutrients.
- Carries hormones and proteins.
- Moves waste products and blood cells throughout the body.
Related Practice Questions
- Differentiate between xylem and phloem.
- What is the function of plasma?
- Why are white blood cells important?
- Define excretion with one example.
- What is a heartbeat?
Mini Quiz Challenge
True or False
- Phloem transports food in plants.
- Xylem transports sugars prepared during photosynthesis.
- White blood cells help fight infections.
- Plasma is the liquid part of blood.
- Excretion removes waste products from the body.
Exam Tips
✔ Do not confuse xylem with phloem.
✔ Learn the functions of different blood components.
✔ Remember that heartbeat and pulse are related but not identical terms.
✔ Revise the definition and purpose of excretion.
✔ Practice diagrams of the circulatory system and plant vascular tissues from NCERT.
Quick Revision Notes
✔ Phloem transports food in plants.
✔ Xylem transports water and minerals.
✔ Heartbeat is the rhythmic contraction and relaxation of the heart.
✔ Excretion removes waste products from the body.
✔ White blood cells protect the body from infections.
✔ Plasma is the liquid component of blood.
Common Mistakes Students Make
❌ Confusing xylem and phloem functions.
❌ Assuming red blood cells fight infections.
❌ Mixing up heartbeat with pulse rate.
❌ Thinking plasma is a blood cell.
❌ Confusing excretion with digestion.
Key Takeaways
- Phloem transports food from leaves to other parts of the plant.
- The heartbeat pumps blood continuously throughout the body.
- Excretion removes metabolic waste products.
- White blood cells protect the body against disease-causing microorganisms.
- Plasma is the liquid medium that carries blood cells and dissolved substances.
FAQs
1. Which tissue transports food in plants?
Phloem transports food and nutrients from the leaves to other parts of the plant.
2. What is a heartbeat?
A heartbeat is one complete cycle of contraction and relaxation of the heart muscles that pumps blood throughout the body.
3. What is excretion?
Excretion is the process of removing metabolic waste products from the body.
4. What is the function of white blood cells?
White blood cells help protect the body by fighting germs and preventing infections.
5. What is plasma?
Plasma is the liquid component of blood that transports nutrients, hormones, proteins, blood cells, and waste materials.
NCERT Reference
Book: NCERT Science Class 7
Chapter: Chapter 11 – Transportation in Animals and Plants
Based On: Latest NCERT Curriculum (CBSE)
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