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Biology : Plant & Animal Cells III (Parts & Functions)


Given the PLANT / ANIMAL
CELL PART, identify the DESCRIPTION

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1.

Chloroplast

  It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes and ions.

  It synthesizes and secretes certain substances, namely hormones and enzymes. It also helps in the formation of acrosome of sperm.

  It is the house of all metabolic activities and functions in the cell. In other words, it contains most of the cell organelles, each of which perform a specific function.

  It is a plastid, containing a pigment called chlorophyll. This chlorophyll captures energy from sunlight and helps in the manufacture of food by the process of photosynthesis.

 
Hint      

2.

Nucleus

  It controls and coordinates all the activities and functions of the cell. It plays a vital role in cell division.

  It synthesizes and secretes certain substances, namely hormones and enzymes. It also helps in the formation of acrosome of sperm.

  It performs intracellular digestion. It also helps in destroying foreign substances.

  It helps in the storage of water and several other substances, namely food, waste products and pigments. It also provides turgidity to the cell.

 
Hint      

3.

Nuclear Membrane

  It provides protection, shape and rigidity to the cell. It is freely permeable, allowing substances in the form of solutions to enter and leave the cell without any hindrance.

  It is a plastid, containing pigments such as xanthophyll (yellow in color) and carotene (orangish-red in color). These pigments impart color to flowers and fruits of plants.

  It provides support to the cell. It also helps in the synthesis and transport of proteins and fats.

  It is semi-permeable, allowing substances to enter and leave the nucleus of the cell. It also provides protection to the nucleus of the cell.

  Half-n-half Clue
 

4.

Chromoplast

  It provides protection, shape and rigidity to the cell. It is freely permeable, allowing substances in the form of solutions to enter and leave the cell without any hindrance.

  It provides support to the cell. It also helps in the synthesis and transport of proteins and fats.

  It is the house of all metabolic activities and functions in the cell. In other words, it contains most of the cell organelles, each of which perform a specific function.

  It is a plastid, containing pigments such as xanthophyll (yellow in color) and carotene (orangish-red in color). These pigments impart color to flowers and fruits of plants.

  Half-n-half Clue
 

5.

Vacuole

  It is a plastid. It helps in the storage of starch.

  It initiates and regulates cell division. It also helps in forming spindle fibres, with the help of asters.

  It helps in the storage of water and several other substances, namely food, waste products and pigments. It also provides turgidity to the cell.

  It is the site of ATP (Adenosine triphosphate) synthesis. It also synthesizes respiratory enzymes.

 
Hint      

6.

Endoplasmic Reticulum

  It provides support to the cell. It also helps in the synthesis and transport of proteins and fats.

  It is a plastid, containing a pigment called chlorophyll. This chlorophyll captures energy from sunlight and helps in the manufacture of food by the process of photosynthesis.

  It is a plastid, containing pigments such as xanthophyll (yellow in color) and carotene (orangish-red in color). These pigments impart color to flowers and fruits of plants.

  It is the house of all metabolic activities and functions in the cell. In other words, it contains most of the cell organelles, each of which perform a specific function.

  Half-n-half Clue
 

7.

Cell Wall

  It provides protection, shape and rigidity to the cell. It is freely permeable, allowing substances in the form of solutions to enter and leave the cell without any hindrance.

  It is a plastid. It helps in the storage of starch.

  It synthesizes and secretes certain substances, namely hormones and enzymes. It also helps in the formation of acrosome of sperm.

  It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders ribosomes to synthesize proteins.

 
Hint      


 
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