Biology Class 9th

141. ______ was the first person to observe the unicellular organism under the microscope.

A) Leeuwenhoek.

B) Robert Hooke

C) Robert turner

D) None of these

142. “All living organisms are made of cell” this was proposed by ____

A) Schleiden

B) Schwann

C) Both A and B.

D) None of these

143. The name “protoplasm” to the fluid substance of the cell was given by ____

A) Purkinje.

B) Robert Hook

C) Brian Lara

D) None of these

144. Cell wall is present in all bacteria, plants, and fungi.

A) True.

B) False

145. Cell wall is located inside plasma membrane.

A) True

B) False.

146. Murein is made of amino acid and sugar.

A) True.

B) False

147. Cell membrane is the outermost layer of the plant cell.

A) True

B) False.

148. Cell membrane is selectively permeable membrane.

A) True.

B) False

149. The Cell is the _______________ unit of all living things.

A) Structural

B) Functional

C) Both A and B

D) None

150. The body of unicellular organisms is made up of __________ cell(s).

A) Single

B) Two

C) Many

D) None

151. Body of Multi cellular organisms is made up of ___________ cell(s).

A) Single

B) Two

C) Many

D) None

152. The use of Microscope is called as ___________.

A) Biology

B) Microscopy

C) Microbiology

D) Anatomy

153. The first Microscope was developed by________.

A) Anton van Leeuwenhoek

B) Zacharias Jensen

C) Robert Hook

D) none of the above.


154. The first microscope was developed in _______.

A) 1632

B) 1595

C) 1645

D)1546

155. The magnification of the first microscope ranged from ___ to ____.

A) 2x to 4x

B) 3x to 9x

C) 4x to 16x

D) 5x to 25x

156. Anton van Leeuwenhoek used his microscope to observe

A) skin cells

B) Plant cells

C) Blood cells

D) Microorganisms.

157. The first microscopist was:

A) Robert Hook

B) Anton van Leeuwenhoek

C) James Charles

D) none of the above.

158. When we see things under the microscope the size of the object image:

A) Decreases

B)  Remains same

C) Increases.

159. The increase in the size of the image of object is called:

A) Magnification

B) Resolution

C) Enlargement

D) Clarity

160. The ability of microscope to show two closely placed objects separately:

A) Magnification

B) Resolution

C) Enlargement

D) Clarity