Question

A student observes two specimens A and B under the microscope. On the basis of his observation he listed down the following-

$\begin{array}{ccc}\text{Parameters}& \text{A}& \text{B}\\ \text{1. Cell wall}& \text{Present}& \text{Absent}\\ \text{2. Well defined nucleus}& \text{Absent}& \text{Present}\end{array}$

Based on these observations, A and B are most likely to be-

• A. Bacterial cell, Plant cell
• B. Animal cell, Bacterial cell
• C. Animal cell, Plant cell
• D. Bacterial cell, Animal cell

Answer 1

The correct option is D Bacterial cell, Animal cell

• Based on the observations we can say that A is a bacterial cell, while B is an animal cell.
• Bacterial cell possess a cell wall which protects them against changing environmental conditions. It also provides shape and rigidity. Animal cells on the other hand lack cell wall.
• Bacterial cell is prokaryotic. They do not have a well defined nucleus, whereas animal cell is eukaryotic. They contain a well defined nucleus.