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Test: Structural Organization Of Cell - Class 9 MCQ


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15 Questions MCQ Test Science Class 9 - Test: Structural Organization Of Cell

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Test: Structural Organization Of Cell - Question 1

Which of the following substance is not present in the cell?

Detailed Solution for Test: Structural Organization Of Cell - Question 1

Cells are made of a variety of chemical substances - proteins, carbohydrates, fats or lipids and so on. Soil is not a component of  cell. 

Test: Structural Organization Of Cell - Question 2

A prokaryotic cell ranges in size from:

Detailed Solution for Test: Structural Organization Of Cell - Question 2

Prokaryotic cells are more primitive kind of cells. so 1. they lack nuclear membrane . so they do not have well defined nucleus. 2.they do not have membrane bound cell organelles. 3.they have single chromosome. 4.in photosynthetic bacteria is associated with membranous vesicles.

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Test: Structural Organization Of Cell - Question 3

Find the incorrect statement regarding cell organelles from the following:

Detailed Solution for Test: Structural Organization Of Cell - Question 3
Many of the organelles found in cells are made up of or are surrounded by membrane and, therefore,would not be found in prokaryotic cells. cytoplasmType of cell: both plant and animalLocation: found inside the cell membrane but outside the nucleusDescription: clear, thick, jellylike material; contains a large amount of water (about 70%) and chemicals;may sometimes appear to be grainy (this grainy appearance comes from the organelles floating in it)Function: contains all the organelles outside of the nucleusOther: the cytoplasm is constantly moving or “streaming” through the cell.
Test: Structural Organization Of Cell - Question 4

An eukaryotic cell ranges in size from:

Detailed Solution for Test: Structural Organization Of Cell - Question 4

5-100 micrometre

Test: Structural Organization Of Cell - Question 5

Which is the control centre of the cell?

Detailed Solution for Test: Structural Organization Of Cell - Question 5
Nucleus is known as control room of the cell because it control all the functions that r taking place in cell
Test: Structural Organization Of Cell - Question 6

Which term describes the entire content of a living cell, including the cytoplasm and the nucleus, and is often referred to as the living substance of the cell?

Detailed Solution for Test: Structural Organization Of Cell - Question 6

The term used to describe the entire content of a living cell, including the cytoplasm and the nucleus, is "protoplasm." Protoplasm is often referred to as the living substance of the cell.

Test: Structural Organization Of Cell - Question 7

Nucleoid is a feature of

Detailed Solution for Test: Structural Organization Of Cell - Question 7
Bacterium is a prokaryotic cell. pro means primitive and karyon means nucleus . Hence a prokaryotic cell like bacteria contains amembrenous ( without membrane) nuclear material called nucleoid which remains scattered in the cytoplasm. 
Test: Structural Organization Of Cell - Question 8

Animal cells do not show the presence of

Detailed Solution for Test: Structural Organization Of Cell - Question 8

Animal cells do not have cell Wall because they do not need them. Cell walls , which are found in plant cells , maintain cell shape, almost as if each cell has its own exoskeleton.

Test: Structural Organization Of Cell - Question 9

Which statement is false with respect to multi-cellular organisms?

Detailed Solution for Test: Structural Organization Of Cell - Question 9

Unicellular organisms are made up of only one cell that carries out all the functions needed by the organism, while multicellular organisms use many different cells to function. Multicellular organisms are composed of more than one cell, with groups of cells differentiating to take on specialized functions

Test: Structural Organization Of Cell - Question 10

Cellular organelles containing hydrolytic enzymes are called

Detailed Solution for Test: Structural Organization Of Cell - Question 10
DNA,genetic material,chrosome contain hereditary information about the cell whereas cytoplasm is the jelly like substance which contain various organelles such as mitochondri golgi bodies etc.thus the tranmission can not be done by cytoplsasm.
Test: Structural Organization Of Cell - Question 11

Prokaryotic cells do not have:

Detailed Solution for Test: Structural Organization Of Cell - Question 11
lysosome is known as suicide bags of cell which is not present in prokaryotic cells.
Test: Structural Organization Of Cell - Question 12

Which of the following is rightly paired ?

Detailed Solution for Test: Structural Organization Of Cell - Question 12

Concept:

  • Chromosomes are a highly condensed form of chromatin threads. Chromosomes were first observed by Hofmeister (1818) and Karl Nageli in pollen mother cells of Tradescantia.
  • Strasburger described chromosome structure first appeared in the nucleus during cell division.

Explanation:

  • Chromosomes are grouped into 4 categories based on the position of the centromere.
  • Metacentric: When the centromere is located at mid of the chromosome. These are V-shaped.
  • Sub metacentric: When the centromere is located near the centre or midpoint of the chromosome. These are L-shaped.
  • Acrocentric: when the centromere is sub-terminal or located near the tip. These are J-shaped.
  • Telocentric: When the centromere is terminal or located at the tip of the chromosome. These are I - shaped.

 

Test: Structural Organization Of Cell - Question 13

Prokaryotic cell contains:

Detailed Solution for Test: Structural Organization Of Cell - Question 13

Most prokaryotes contain one circular chromosome. DNA communicateswith the cytoplasm- so it allows direct connection to the transcription and translation. Contain only one copy of the gene. Non essential genes are stored outside of chromosome - in Plasmids.

Test: Structural Organization Of Cell - Question 14

The presence of various cell organelles within the cell helps in

Detailed Solution for Test: Structural Organization Of Cell - Question 14

In order for cells to function and survive, their organelles work together to carry out specific tasks and perform specific roles. Each organelle has its own role that contributes to the survival of the cell. This is called thr Division of labour. 

Test: Structural Organization Of Cell - Question 15

Cell wall is mainly made up of

Detailed Solution for Test: Structural Organization Of Cell - Question 15
Cellulose which is a complex substance ( fibrous polysaccharide ) which provides structural strength to plants
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