CBSE Class 9 - Cell - Fundamental Unit of Life - Question Bank
QUESTION BANK - CELL - FUNDAMENTAL UNIT OF LIFE
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| Plant Cell |
Q1: Who observed the cells first time?
Q2: Define Cell
Q3: Who proposed the cell theory?
Q4: Who expanded cell theory by suggesting that all cells arise from pre-existing cells?
Q5: In which year electron microscope was invented?
Q6: Name the book in which Robert Hooke published his observations about cork cells.
Q7: Who discovered nucleus in the cell?
Q8: Name the two postulates of the cell theory.
Q9: Who coined the term 'protoplasm'?
Q10: Name the largest cell?
Q11: Name the world's smallest cell.
Q12: Name the smallest cell in human body.
Q13: Name the biggest cell in human body.
Q14: Name the longest cell in human body.
Q15: Name the cell in human body which cannot reproduce.
Q16: Give an example of anucleate cell i.e. cell without nucleus.
Q17: Give an example of cells containing two nuclei (Bi-nucleate).
Q18: Give examples of cells which are multinucleate (i.e. having many nuclei).
Q19: What is the plasma membrane composed of?
Q20: Who proposed fluid mosaic model of cell or plasma membrane?
Q21: Is plasma membrane permeable or selectively permeable?
Q22: What are different types transports of components across cell membrane?
Q23: Define Passive Transport.
Q24: What is diffusion?
Q25: Define Osmosis. What are different types of osmosis? Give examples of osmosis.
Q26: What happens to a cell (plant cell or animal cell) when placed in the following solutions:
(a) Hypotonic solution
(b) Isotonic solution
(c) Hypertonic solution
Q27: What is plasmolysis?
Q28: Place a deshelled egg in water for five minutes. What do you observe?
(Note: De‐shelled egg means, the shell of an egg is removed by dissolving it in dilute hydrochloric acid. The shell is mostly calcium carbonate. A thin outer skin now encloses the egg.)
Q29: What will happen if a de‐shelled egg in a concentrated salt solution for 5 minutes?
Q30 (CBSE): Put dried raisins in plain water and leave them for some time. Then place them in concentrated solution of sugar or salt. What do you observe in both cases?
Q31: What would happen if the plasma membrane ruptures or breaks down?
Q32: What do you mean by Endocytosis? How does an Amoeba obtain its food?
Q33: Define Exocytosis.
Q34: Why are Lysosomes known as suicide bags?
Q35: Viruses are
(a) Uni cellular micro‐organisms
(b) Bi‐Cellular micro‐organisms
(c) Multi‐cellular micro‐organisms
(d) Non‐cellular micro‐organisms
Q36: Who is known as Father of Biology?
Q37: Who discovered Golgi apparatus?
Q38: Which cell organelle is known as "protein factory"?
Q39: What is the energy currency of the cell called?
Q40: When chromosomes are visible in the nucleus?
Q41: Which of the following is NOT involved in the synthesis of proteins?
(a) rough ER (b) smooth ER
(c) Golgi body (d) ribosomes
Q42: Which of the following one distinguishes plant cells from animal cells?
(a) centrioles (b) nucleus
(c) chromaĕn (d) rough ER
Q43: Are plastids present in all cells? What are its types?
Q44: Name the sac like structure which form the grana?
Q45: What are the conditions for osmosis?
Q46: Will the temperature have any effect on the process of the osmosis?
Q47: What is osmoregulation?
Q48: Which organ of the plant body helps in osmoregulation?
Q49: Which organelle of the cell in animals helps in osmoregulation?
Q50 What are centrosomes? What functions do they perform?
Q51: Who is known as 'Father of Microscopy'?
Q52: Are Viruses Prokaryote or Eukaryote?
Q53: Which cell organelle is called "kitchen of plant"?
Q54: Which cell organelle is called 'control center'?
Q55: Which cell organelle is called 'transport system'?
Q55: What is Endoplasmic Reticulum(ER)? Name its types?
Q56: What are the functions of Endoplasmic Reticulum (ER)?
Q57: Name the components nucleus?
Q58: What is the function of nucleoplasm?
Q59: How chromatic network is related to chromosomes?
Q60: What are chromosomes?
Q61: What is the full form of DNA and RNA?
Q62: Who discovered Virus?
Q63: What are the functions of nucleus?
Q64: Why can't single cells grow very large? Or Big organisms like human beings are muli‐cellular?Why can't such big organisms be a single large cell?
Q65(NTSE Stage2): Which of the following is an example of a single cell that does not function as a full-fledged organism?
(a) White blood cells (WBC) (b) Amoeba
(c) WBC and Amoeba (d) Paramecium
Q66: Why do vegetable vendors (subzi‐walla) regularly sprinkle water on the vegetables in their baskets?
Q67: Why do we stain cells while observing under microscope? List commonly used stains.
Q68: Are there any exceptions to cell theory proposed by Schleiden & Schwann and Virchow? If yes, what are those?
Q69: What is the thickness of cell membrane?
Q70: Why are mitochondria absent in red blood cells?
Q71: Name the cell organelles which their own DNA and Ribosomes.
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