Complete Notes of Biology Students

NCERT Biology   Unit I: Diversity in the Living World Chapters 1 to 4 1-Mark Questions (Attempt all 10 questions) (Total: 10 Marks)  * What is the technical name for the statement "as we go higher from species to kingdom , the number of common characteristics goes on decreasing"?  * Give an example of a sterile living organism .  * Name the two components of binomial nomenclature .  * In which group of organisms do we find naked seeds ?  * What is the main criterion for classification used by R.H. Whittaker ?  * Give one example of an organism that is both autotrophic and heterotrophic .  * What is the term used for a collection of preserved plant specimens mounted on sheets?  * Which phylum includes animals with a notochord ?  * Give an example of a plant belonging to the kingdom Plantae that lacks a true root, stem, and leaf.  * Name the first division to have vascular tissues among the Plant Kingdom . 2-Mark Questions (Attempt...

Questions Paper 1 1-Mark Questions (Attempt all 10 questions) (Total: 10 Marks)  * What is the outermost protective layer of a plant organ called?  * Which type of vascular bundle is characterized by the presence of cambium?  * Name the tissue that forms the continuous undifferentiated mass in a monocot stem.  * In a dicot root, what is the arrangement of xylem called where the protoxylem is located towards the outside?  * What is the main function of the cuticle on the epidermis of a leaf?  * In which part of the dicot stem do lateral roots originate?  * What is the primary function of the cortex in both roots and stems?  * Which type of venation is characteristic of an isobilateral leaf?  * Name the special cells in the epidermis of monocot leaves that help in rolling and unrolling.  * What is the location of the vascular bundles in a monocot stem? 2-Mark Questions (Attempt 3 questions) (Total: 10 Marks)  * Differentiate between t...

Questions and their answers 1. Question: What is the defining feature of a dicot root's vascular bundle arrangement? Answer: The vascular bundles are arranged radially, with the xylem forming a star-shaped pattern in the center. 2. Question: How does the pith of a monocot root differ from that of a dicot root? Answer: A monocot root has a large, well-developed pith, while a dicot root has a small or absent pith. 3. Question: In a dicot stem, what is the specific term for the arrangement of vascular bundles? Answer: The vascular bundles are arranged in a ring. 4. Question: Why are the vascular bundles in a monocot stem described as "closed"? Answer: They are closed because they lack cambium, which means they cannot undergo secondary growth. 5. Question: What is the primary function of collenchyma cells in a dicot stem's hypodermis? Answer: They provide mechanical support to the young, growing stem. 6. Question: What is the main structural difference in the mesophyll of...

 One-mark questions and answers   * Question: What is the main function of the epidermal tissue system?    Answer: To form the outermost covering of the plant body for protection.  * Question: Name the two complex tissues that make up the vascular tissue system.    Answer: Xylem and phloem.  * Question: What is the name given to the outermost covering of the root?    Answer: Epiblema.  * Question: What is the function of root hairs?    Answer: To absorb water and minerals from the soil.  * Question: What is the term for the waxy, thick layer on the outside of the epidermis?    Answer: Cuticle.  * Question: Where in the plant are stomata primarily located?    Answer: In the epidermis of leaves.  * Question: What are the three components of the stomatal apparatus?    Answer: The stomatal aperture, guard cells, and surrounding subsidiary cells.  * Question: What is the na...

Multiple-Choice Questions (MCQ) 1. Which of the following is NOT a type of tissue system based on structure and location? A. Epidermal Tissue System B. Ground Tissue System C. Vascular Tissue System D. Meristematic Tissue System Answer: D 2. The epidermis of the root is often referred to as: A. Pericycle B. Cortex C. Endodermis D. Epiblema Answer: D 3. In dicot stems, the vascular bundles are arranged in a: A. Scattered pattern B. Radial arrangement C. Ring D. Concentric circles Answer: C 4. The vascular bundles in a monocot stem are described as: A. Open and conjoint B. Closed and conjoint C. Open and radial D. Closed and radial Answer: B 5. The main function of the cuticle is to: A. Facilitate gaseous exchange B. Prevent water loss C. Store food D. Provide mechanical support Answer: B 6. The mesophyll in a dorsiventral (dicot) leaf is differentiated into: A. Palisade and sclerenchyma B. Spongy and collenchyma C. Palisade and spongy parenchyma D. Endodermis and pericycle Answer: C 7. ...