Advertisements
Advertisements
Question
Which of the following is not correct?
Options
Robert Brown discovered the cell.
Schleiden and Schwann formulated the cell theory.
Virchow explained that cells are formed from pre-existing cells.
A unicellular organism carries out its life activities within a single cell.
Solution
Robert Brown discovered the cell.
Explanation:
Robert Hooke discovered the cell and Robert Brown discovered the nucleus in the cell.
APPEARS IN
RELATED QUESTIONS
Cell is the basic unit of life. Discuss in brief.
Indicate whether the following statements are True (T) or False (F).
Unicellular organisms have one-celled body. (T / F)
Indicate whether the following statements are True (T) or False (F).
The basic living unit of an organism is an organ. (T / F)
Choose the correct option.
Cell Membrane is composed of ______.
A cell is the smallest unit of life.
Assertion (A): Tissue is a group of dissimilar cells.
Reason (R): Muscle is made up of Muscle cell.
______ cells are specialised cells that can be transformed into any kind of cells.
The cell is self-sufficient and carries out all the fundamental and essential functions of an organism.
All the cells can be seen with our naked eye.
Analogy:
Smallest cell: virus.
Biggest cell: ______.
Name the largest Angiosperm cell
Which of the following can be made into crystal?
Do you agree that “A cell is a building unit of an organism”. If yes, explain why?
Name the organelles which show the analogy written as under
Transporting channels of the cell——
Name the organelles which show the analogy written as under
Power house of the cell——
Draw a plant cell and label the parts which
- determines the function and development of the cell
- packages materials coming from the endoplasmic reticulum
- provides resistance to microbes to withstand hypotonic external media without bursting
- is site for many biochemical reactions necessary to sustain life. (e) is a fluid contained inside the nucleus
Identify the statement which is true for cells.
Fill in the blanks with the terms given in the box below :
| Nucleus | chromosomes | cell wall | cell membrane | protoplasm | cytoplasm | ribosome | cell organelles |
The outermost layer of plant cells is the __(a)____ beneath which is the __(b)____ The term ___(c)___ refers to the jelly-like substance containing all the ___(d)___ The __(e)____ contains thread-like structures called ___(f)___.
The smallest cell in the human body is ______.
Stem cells can serve as an inbuilt repair system for our body.
