Question 4 :
The cell division in blue green algae similar to that in 

Question 5 :
One of the following is an exception to the 'cell theory'. 

Question 7 :
The smallest size of a cell which can be seen with unaided eye is

Question 8 :
Schleiden (1838) proposed that cell is the structural and functional unit of life. His idea was a

Question 12 :
State the following statements are true or false.<br/><br/>New&#160;cells originate from the division of pre-existing cells.&#160;

Question 13 :
In view of the current status of our knowledge about the cell structure, which of the following statement(s) about cell theory is/are correct?<br/>(i) The cell theory does not hold good since all living organisms are not cellular in organisation.<br/>(ii) The cell theory in its modified form means that all living objects are composed of cells capable of reproduction.<br/>(iii) The cell theory means that all living objects consist of cells, whether reproducing or not.<br/>(iv) The cell theory needed modification due to the discovery of sub-cellular structures such as chloroplasts and mitochondria.

Question 18 :
Glycocalyx (mucilage sheath) of a bacterial cell may occur in the form of a loose sheath called ________ or it may be thick and tough called __________.

Question 22 :
Assertion: Cell theory was put forward by Schleiden and Schwann. Reason: It is applicable to all cells including viruses.

Question 23 :
Which of the following statements is related to the cell theory?

Question 25 :
Based on his own observation as well as those of others, in 1838, Schwann made a tentative statement that all living things are made of cell. When first suggested in 1838, this statement was

Question 27 :
Match the following.<br/><table class="wysiwyg-table"><tbody><tr><td>A. &#160;Mitochondria, chloroplast and nucleus</td><td>1. Amembranous</td></tr><tr><td>B. Lysosome and glyoxysome</td><td>2. Single membrane</td></tr><tr><td>C. Ribosome</td><td>3. Double membrane</td></tr><tr><td>D. Bacterial chromatin</td><td>4. Triple membrane</td></tr><tr><td></td><td>5. Without membrane, common to prokaryotic and eukaryotic cells</td></tr></tbody></table>

Question 28 :
Assertion: Schleiden and Schwann were the first to put forward cell theory. Reason: The cells are always living unit.