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Chapters1 - The Living World
2 - Biological Classification
3 - Plant Kingdom
4 - Animal Kingdom
5 - Morphology of Flowering Plants
6 - Anatomy of Flowering Plants
7 - Structural Organisation in Animals
8 - Cell: The Unit of Life
9 - Biomolecules
10 - Cell Cycle and Cell Division
11 - Transport in Plants
12 - Mineral Nutrition
13 - Photosynthesis in Higher Plants
14 - Respiration in Plants
15 - Plant Growth and Development
16 - Digestion and Absorption
17 - Breathing and Exchange of Gases
18 - Body Fluids and Circulation
19 - Excretory Products and their Elimination
20 - Locomotion and Movement
21 - Neural Control and Coordination
22 - Chemical Coordination and Integration
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Chapter 8 - Cell: The Unit of Life
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell.
New cells generate from
(a) bacterial fermentation
(b) regeneration of old cells
(c) pre-existing cells
(d) abiotic materials
Match the following
|Column I||Column II|
|a||Cristae||1||Flat membranous sacs in stroma|
|b||Cisternae||2||Infoldings in mitochondria|
|c||Thylakoids||3||Disc-shaped sacs in Golgi apparatus|
Which of the following is correct:
(a) Cells of all living organisms have a nucleus.
(b) Both animal and plant cells have a well defined cell wall.
(c) In prokaryotes, there are no membrane bound organelles.
(d) Cells are formed de novo from abiotic materials.
What is a mesosome in a prokaryotic cell? Mention the functions that it performs.
How do neutral solutes move across the plasma membrane? Can the polar molecules also move across it in the same way? If not, then how are these transported across the membrane?
Name two cell-organelles that are double membrane bound. What are the characteristics of these two organelles? State their functions and draw labelled diagrams of both?
Multicellular organisms have division of labour. Explain.
Cell is the basic unit of life. Discuss in brief.
What are nuclear pores? State their function.
Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment.
Describe the structure of the following withthe help of labelled diagrams
Describe the structure of the following withthe help of labelled diagrams.
What is a centromere?
How does the position of centromere form the basis of classification of chromosomes. Support your answer with a diagram showing the position of centromere on different types of chromosomes.
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