Ssc Biology Chapter 2 Hand Note Exclusive ((full))

SSC Biology Chapter 2: Cells and Tissues (Hand Note)

5. Board Exam Short Questions (With Answers)

Q1: Why is the cell called the structural unit of life?
A: Because all living organisms are made of one or more cells, and cells form the basic building blocks of the body.

Q2: What is a tissue?
A: A group of similar cells that work together to perform a specific function. ssc biology chapter 2 hand note exclusive

Q3: Write two differences between Xylem and Phloem.
A: SSC Biology Chapter 2: Cells and Tissues (Hand Note) 5

• Xylem: Transports water & minerals from root to leaves; cells are dead.
• Phloem: Transports food from leaves to other parts; cells are living.

Q4: Why is mitochondria called the powerhouse?
A: Because it produces ATP (energy) through cellular respiration. Xylem: Transports water & minerals from root to

Part 5: Tissues – Groups of Cells Working Together

Tissue is the next level after the cell. Your hand note should classify tissues like this:

✍️ Important for Exam (MCQ & CQ)

• Who is the father of microscopy? → Antonie van Leeuwenhoek.
• Which organelle is called the 'control room'? → Nucleus.
• Which tissue makes the plant hard? → Sclerenchyma.
• Which animal tissue is fluid? → Blood (connective tissue).
• What is the middle lamella made of? → Calcium pectate.