Showing posts with label class9-biology. Show all posts
Showing posts with label class9-biology. Show all posts

Wednesday 6 June 2012

CBSE Class 9 - Biology - CH6 - Tissues (Set-1)

PLANT TISSUES 

MCQs, NCERT Chapter Solutions and Q & A (asked in CBSE examination)

MCQs

Q1: The study of tissues is called ...
a) cytology
b) embryology
c) histology
d) pathology

Answer: c) histology


Q:2 Which of the following statement is NOT true?
(a) Most of the plant tissues are the supportive type.
(b) Tissues ensure the division of labour.
(c) Sedentary existence contributes to the organ system design in animals.
(d) Organ systems are far more complex in animals than in plants.

Sunday 8 April 2012

Class 9 - Chapter 5 - Cell - Fundamental Unit of Life - NCERT Q & A #class9-biology #eduvictors

Fundamental Unit of Life 

NCERT Q & A


Q1: Who observed the cells the first time?
Answer: Robert Hooke. He observed a thin slice of cork cells under a simple microscope.


Class 9 - Chapter 5 - Cell - Fundamental Unit of Life - NCERT Q & A #class9-biology #eduvictors 



Simple Microscope made by Robert Hooke (credits: Wikipedia)




Q2: Define Cell

Answer: The cell is the structural and functional unit of life.

Q3: Who proposed the cell theory?

Answer: Schleiden (1838) and Schwann (1839).

Q4: Who expanded cell theory by suggesting that all cells arise from pre-existing cells?

Answer: Virchow (1855.

Q5: In which year the electron microscope was invented?

Answer: 1940

Q6: Name the book in which Robert Hooke published his observations about cork cells.

Answer: Micrographia.