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The fundamental unit of life class 9 worksheet





Given below are the Fundamental Unit of Life Class 9 worksheet and Practice paper with answers
(a)Fill in the blanks
(b) Short questions
(c) Long answer questions
(d) Crossword Puzzle
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Fill in the blanks

Question 1.
Fill in the blanks
  • Transporting channel of the cell is______.
  • Chromosomes are made up of _____ and__.
  • The infolding of mitochondria is known as _____.
  • Storage sac of the cell is_______.
  • Non-membranous organelle of cell is_____.
  • Smallest cell in human is______.
  • ________is the full form of DNA.
  • ATP stands for_______.
  • Cells which change their shapes are_____ and______.
  • Largest cell in the world is_______

Answer

(i)endoplasmic reticulum
(ii)nucleic acids and proteins
(iii)cristae
(iv) Vacuoles
(v) Cytoskeleton
(vi) granule cell of the cerebellum
(vii) Deoxyribonucleic Acid
(viii)adenosine triphosphate.
(ix) White blood cells and Amoeba
(x) Caulerpa taxifolia


Short Answer Type

Question 2 What is hypotonic solution?

Answer

A solution having solute concentration lower than that of the cell sap is called hypotonic solution.


Question 3
What is hypertonic solution?

Answer

A solution having solute concentration higher than that of the cell sap is called hypertonic solution.


Question 4
What is isotonic solution?

Answer

A solution having solute concentration same as that of the cell sap is called isotonic solution.


Question 5
What is active transport?

Answer

The movement of molecules across a membrane in cells against a concentration gradient with the help of ATP units is called active transport.


Question 6
Where are proteins synthesized inside the cell?

Answer

Ribonsomes present in the cell synthesise proteins and are called protein factories of the cell. These may be attached on the surface of rough endoplasmic reticulum or lie freely in the cell.


Question 7
What is endocytosis?

Answer

Endocytosis is the ingestion of material by folding of the membrane around it for its engulfment as seen in Amoeba.



Long Answer type

Question 8.
Differentiate between
  • Osmosis and diffusion
  • Prokaryotic cell and eukaryotic cell
  • plasma membrane and cell wall
  • plant cell and animal cell
Question 9.
Give the structure and functions of following
  • Endoplasmic reticulum
  • Mitochondria
  • Centrosome
  • Golgi bodies
Question 10.
How do substance like CO2 and water move in and out of the cell?
Question 11.
What is nucleus? Describe it parts and functions? 
Question 12.
What happen?
  • If Dry apricot placed in pure water?
  • Plasma membrane get ruptures or breakdown?
Question 13.
Why lysosomes are called suicidal bag of the cell? (2)
Question 14.
Draw a labeled diagram of animal cell? (3)

Crossword Puzzle

Question 15.
the fundamental unit of life class 9 worksheet

ACROSS
3. ___stands DeoxyriboNucleic Acid
6. These are important for photosynthesis in plants

DOWN
1. They are the powerhouses of the cell
2. Paramoecium is a ____________ organisms
4. It is a kind of waste disposal system of the cell
5. One of the biologist who presented the cell theory

Answer

(1) Mitochondria
(2) unicellular
(3) DNA
(4) Lysosomes
(5) Schleiden
(6) Chloroplasts



Summary

This The fundamental unit of life class 9 worksheet with answers is prepared keeping in mind the latest syllabus of CBSE . This has been designed in a way to improve the academic performance of the students. If you find mistakes , please do provide the feedback on the mail.


 

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