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Daily Practice Problems
Class 9 Science
The Fundamental Unit of Life
daily practice problem

Question 1:

Name the scientists who

(i) discovered cells

(ii) discovered the compound microscope

(iii) discovered the nucleus in the cell

(iv) coined the term ‘protoplasm’ for the fluid substance of the cell

(v) presented the Cell theory

(vi) who proposed that all cells arise from pre-existing cells.

(vii) who first described the Golgi apparatus

Question 2:

Justify the following statement “Every multicellular organism has come from a single cell.”

Question 3:

Differentiate between the following:

(i) unicellular and multicellular organisms

(ii) prokaryotic and eukaryotic organisms

(iii) rough endoplasmic reticulum and smooth endoplasmic reticulum

(iv) mitosis and meiosis

Question 4:

What is meant by plasma membrane? Why is it called ‘selectively permeable’?

Question 5:

What will happen if you place a living cell into a:

(i) hypertonic solution

(ii) hypotonic solution

(iii) isotonic solution

Question 6:

Why are plant cells rigid in comparison to the animal cells?

Question 7:

What do we call the rod-shaped structures of the nucleus that are visible only when the cell is about to divide? Why are they significant?

Question 8:

What do we call the components of the cell that together confers division of labour within the cells by performing special function? Give a few examples.

Question 9:

Name the type of cell organelle that forms a large network of membrane-bound tubes and sheets. Name its types.

Question 10:

Give any three functions performed by the Golgi apparatus.

Question 11:

Why are ‘lysosomes’ called the suicidal bags of the cell?

Question 12:

Name the two cell organelles that have their own DNA.

Question 13:

Name the cell organelles that are referred to as the powerhouse of the cell. Why are they called so?

Question 14:

Name the various types of plastids. Also mention their functions.

Question 15:

Briefly enlist any three uses of vacuoles in a cell.

Question 16:

What is meant by cell division? How many types of cell divisions are there? Name them.

Question 17:

Why don’t viruses show characteristics of life until they enter a living body?

Question 18:

Name the following:

(i) The structural and functional unit of life.

(ii) The free movement of substances from its region of higher concentration to the region of lower concentration.

(iii) The process which is enabled by the flexibility of the cell membrane  that allows the cell to engulf in food and other materials from its external surrounding.

(iv) The chemical substance which constitutes the genes.

(v) Organisms whose body is composed of many cells.

Question 19:

Match the columns A and B:

              Column A                                                  Column B

1. ATP                                                   i. Cellulose

2. Gene                                                ii. Energy currency of the cell

3. Osmosis                                          iii. Functional segments of DNA

4. Plant cell wall                                iv. Cell division

5. Mitosis                                            v. Semi-permeable membrane

Question 20:

State whether the following statements are true or false.

(i) All animal cells contain a cell wall.

(ii) Plant cells contain large vacuoles.

(iii) Genes are located in chromosomes.

(iv) The cell membrane is freely permeable.

(v) The activities of the cell are controlled by the nucleus.

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Problem-solving on Class 9 Science The Fundamental Unit of Life NCERT Chapter 5 after learning a theoretical concept is crucial for several reasons:

  1. Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic Class 9 Science The Fundamental Unit of Life you have learned to real-life situations. It helps you bridge the gap between abstract knowledge and practical scenarios, making the learning more relevant and meaningful.
  2. Understanding Deeper Concepts: When you encounter problems related to a theoretical concept that you learned in Class 9 Science The Fundamental Unit of Life NCERT Chapter 5, you are forced to delve deeper into its intricacies. This deeper understanding enhances your comprehension of the subject and strengthens your grasp of the underlying principles.
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  4. Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in The Fundamental Unit of Life Class 9 Science in practical scenarios helps you remember them better than passive reading or memorization.
  5. Identifying Knowledge Gaps: When you attempt to solve problems, you may encounter areas where your understanding is lacking. These knowledge gaps become evident during problem-solving, and you can then focus on filling those gaps through further study and practice. You can refer The Fundamental Unit of Life Class 9 Science Notes on LearnoHub.com
  6. Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle The Fundamental Unit of Life. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
  7. Preparation for Exams and Challenges: Many exams, especially in science, mathematics, and engineering, involve problem-solving tasks. Regular practice in problem-solving prepares you to face these exams with confidence and perform well. It is also advised to take tests on The Fundamental Unit of Life Class 9 Science Online Tests at LearnoHub.com.
  8. Enhancing Creativity: Problem-solving often requires thinking outside the box and exploring various approaches. This fosters creativity and innovation, enabling you to come up with novel solutions to different problems.
  9. Life Skills Development: Problem-solving is a valuable life skill that extends beyond academics. It equips you with the ability to tackle various challenges you may encounter in personal and professional life.
  10. Improving Decision Making: Problem-solving involves making decisions based on available information and logical reasoning. Practicing problem-solving enhances your decision-making skills, making you more effective in making informed choices.

In summary, problem-solving after learning a theoretical concept on CBSE The Fundamental Unit of Life Class 9 Science is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.

You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.

Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.

All About Daily Practice Problems on Class 9 Science The Fundamental Unit of Life NCERT Chapter 5

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 9 Science The Fundamental Unit of Life NCERT Chapter 5 useful.

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