The Fundamental Units of Life (CBSE IX)
|Description: You Can get a clear idea on Biology topics of Class IX science subject. .By taking this test,you will be mastered to answer minute questions too
|Number of Questions: 25
|Tags: Class IX science CBSE Biology chapterwise CBSE IX biology Entrance exam. Fundamental Units of Life
The storage sacs for solid and liquid contents are
In plant cells, vacuoles are full of cell sap and provide turgidity and rigidity to the cell.
Double membrane is absent in
Lysosomes are membrane-bound sacs filled with digestive enzymes.
Shrinkage or contraction of the contents of the cell away from the cell wall is
During endosmosis, water comes out of the cell.
Plasmolysis occurs due to
When a living plant cell loses water, plasmolysis occurs.
Which of the following limits the animal cell?
Because plasma membrane is the outermost layer.
Like mitochondria, their own DNA and ribosome are present in
Mitochondria and plastids have their own DNA and Ribosome
Plant cell wall is mainly composed of
Cellulose is a complex substance and provides structural strength to plants.
The term “Cell “ was coined by
Cells were discovered by Robert Hooke in 1665 and he saw that the cork resembled the structure of Honey comb. Hence, he called these boxes cells. (Cell is a Latin word, which means a little room.)
The cell placed in which of the following solutions swells up?
Because more water comes into the cell than we leave
Amoeba acquires food through
The flexibility of the cell membrane enables the cell to engulf the food.
Which of the following is known as suicide bag?
When the cell damaged, lysosomes may burst and the enzyme digest their own cell.
Which is the largest cell in the human body?
The shape and size of the cell are related to the specific functions they perform.
Cell wall is absent in
Cell wall is present only in plant cell.
The powerhouse of the cell is
Mitochondria releases energy in the form of ATP for various activities of the cell.
Who proposed the cell theory?
Schleiden and Schwann proposed the cell theory and they were awarded the Nobel Prize for this contribution.
The outer skin is known as
Skin has many layers and its outer most layer is known as epidermis.
Which of the following separates cell from external environment?
Plasma membrane is the outer most covering of the cell that separates contents of the cell from external environment.
Plasma membrane is made up of
Plasma membrane is flexible and is made up of organic molecules called lipids and proteins.
Centrosome is found in
Centrosomes are the small region of cytoplasm adjacent to the nucleus.
Robert Hooke observed the cell through
In 1665, primitive microscopes were available only to Robert Hooke.
Cell organelle that is not found in animals is
Plastids are present only in plant cells.
The site of respiration within the cell is
The energy required for various process is released in mitochondria.
What is the main difference between animal and plant cells?
Animals are dependent for their nutrition and cannot make their own food like plants.
Apart from iodine solution to stain the cells, we can use
To observe the cells in temporary mounts, all these solutions can be used.
Cell was first discovered in the year
Robert Hooke first observed the cells in cork slice in 1665.