Answers :
1️⃣ Answer: Collenchyma 🌱
🧠 Explanation: Collenchyma is a simple permanent tissue providing flexible support in young stems and leaves. 🌿
2️⃣ Answer: Complex tissue 🔬
🧠 Explanation: Xylem and phloem are complex tissues responsible for transporting water, minerals, and food. ⚡
3️⃣ Answer: Young stems and petioles 🪴
🧠 Explanation: Collenchyma cells are located in growing parts like young stems and petioles to provide mechanical support. 🌱
4️⃣ Answer: Thick lignified walls 🧱
🧠 Explanation: Sclerenchyma has thick, lignified walls for mechanical strength. 🔬
5️⃣ Answer: Photosynthesis, storage, and secretion 🌿
🧠 Explanation: Parenchyma cells are living simple tissues that store nutrients, assist in photosynthesis, and secretion. 🪴
6️⃣ Answer: Tracheids, vessels, xylem parenchyma, fibers ⚡
🧠 Explanation: Xylem consists of tracheids, vessels, parenchyma, and fibers for water and mineral transport. 🌱
7️⃣ Answer: Xylem vessels ❌
🧠 Explanation: Xylem vessels are not part of phloem; phloem has sieve tubes, companion cells, and fibers. 🔬
8️⃣ Answer: True ✅
🧠 Explanation: Collenchyma cells are living at maturity and provide flexible support. 🌿
9️⃣ Answer: True ✅
🧠 Explanation: Sclerenchyma cells are mostly dead at maturity and provide mechanical strength. 🪴
10️⃣ Answer: Food (sugars) 🍬
🧠 Explanation: Phloem transports organic nutrients like sugars from leaves to other plant parts. 🌱
11️⃣ Answer: Xylem ❌
🧠 Explanation: Xylem is a complex tissue; parenchyma, collenchyma, and sclerenchyma are simple tissues. 🔬
12️⃣ Answer: Transport of water and food ⚡
🧠 Explanation: Complex tissues like xylem and phloem transport water, minerals, and food throughout the plant. 🌿
13️⃣ Answer: Long and slender 🪴
🧠 Explanation: Sclerenchyma fibers are long and slender, providing tensile strength. 🌱
14️⃣ Answer: Transport of water 💧
🧠 Explanation: Tracheids are xylem cells that move water upward in plants. 🔬
15️⃣ Answer: Sieve tube elements 🌿
🧠 Explanation: Companion cells support sieve tube elements metabolically for efficient food transport. 🪴
📚 Topics Covered
🧠 Core Concepts
- Simple Permanent Tissues: Made of similar cells performing specific functions; includes parenchyma, collenchyma, and sclerenchyma. 🌿
- Parenchyma: Living cells with thin walls for storage, photosynthesis, and secretion. 🍃
- Collenchyma: Provides flexible support in young stems and leaves. 🪴
- Sclerenchyma: Dead cells with thick lignified walls providing mechanical strength. 🧱
- Complex Permanent Tissues: Xylem and phloem transport water, minerals, and food throughout the plant. ⚡
- Xylem: Composed of tracheids, vessels, fibers, and xylem parenchyma for water transport. 💧
- Phloem: Contains sieve tubes and companion cells for food transport. 🍬
⚡ Important Features (Quick Facts)
- Parenchyma cells are living and thin-walled. 🌱
- Collenchyma provides flexible support to growing plant parts. 🪴
- Sclerenchyma cells are mostly dead and thick-walled. 🧱
- Xylem conducts water and minerals from roots to leaves. 💧
- Phloem transports organic food from leaves to other parts. 🍬
- Complex tissues combine different types of cells for efficient transport. ⚡
✅ Revision Checklist & Exam Tips
- Identify simple and complex permanent tissues in diagrams.
- Label organelles and tissue types accurately.
- Remember parenchyma, collenchyma, sclerenchyma features.
- Distinguish xylem and phloem structures and functions.
- Revise key transport pathways in plants. 🌱
- Practice past year questions and diagram-based exercises.
Exam Tips:
- Draw and label tissue diagrams clearly. 🖊️
- Use keywords like “living/dead cells”, “lignified walls”, “sieve tubes”.
- Focus on functions of each tissue for MCQs. 📌
- Compare simple vs complex tissues for quick answers. ⚡
🗂️ Key Terms (Glossary)
- Parenchyma: Living simple tissue, thin-walled. 🌿
- Collenchyma: Flexible support tissue. 🪴
- Sclerenchyma: Dead, thick-walled tissue. 🧱
- Xylem: Complex tissue for water transport. 💧
- Phloem: Complex tissue for food transport. 🍬
- Tracheids: Xylem cells for water conduction. ⚡
- Vessels: Xylem tubes for water transport. 🌱
- Sieve Tube: Phloem cell transporting food. 🍃
- Companion Cell: Supports sieve tube metabolically. 🔬
- Lignin: Strengthening compound in cell walls. 🧱
- Complex Tissue: Tissue made of more than one cell type. ⚡
- Simple Tissue: Tissue of similar cells performing same function. 🌿