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9 BIOMOLECULES Biomolecules All the carbon compounds that we get from living tissues. Biomicromolecules: Molecules which have molecular weights less than one thousand Dalton. They are also known as monomers. Biomacromolecules: Have molecular weight more than 10000 Daltons (generally 10,000 Daltons and above). They are generally polymers. A biomolecule a with molecular weight in the […]

8 CELL THE UNIT OF LIFE PRACTICE QUESTIONS In living organisms detailed description that brings out their knowledge of diversity is about A) Their form B) Their appearance C) Both D) None What brought out the unit of diversity the cellular organisation of all life form: A) Theory of evolution B) Species theory C) Cell […]

8 CELL THE UNIT OF LIFE Cell A cell is defined as the most basic, structural and functional unit of all living organisms. Essentially, a cell is a structure that contains organelles which provide necessary functions to sustain itself. However, not all cells are the same. Prokaryotic cells (8 CELL THE UNIT OF LIFE) Membrane-bound […]

CHAPTER 7 STRUCTURAL ORGANISATION IN ANIMALS PRACTICE QUESTIONS CHAPTER NOTES Consider the following statements: a) A tissue is composed of similar cells which perform specific functions. b) Epithelial tissues are characterized by a free surface toward body fluid or outside environment. Select the correct option. A) a is true, b is false B) Both a […]

CHAPTER 6 ANATOMY OF FLOWERING PLANTS PRACTICE QUESTIONS CHAPTER NOTES Apical meristems A) Occur at root tip B) Produce primary tissues C) Regenerate parts of plant D) Both A & B During leaf formation and stem elongation, some cells of apical meristem left behind form-               A) Primary cell. B) […]

CHAPTER 6 ANATOMY OF FLOWERING PLANTS Anatomy Anatomy is the study of internal structure of organisms. Plant anatomy includes organization and structure of tissues. Tissue is a group is cells having a common origin and usually performing a common function. The Tissue A group of cells having a common origin and usually performing common function […]

CHAPTER 5 MORPHOLOGY OF FLOWERING PLANT PRACTICE QUESTIONS Curly top virus spreads a plant via- A) Xylem B) Phloem                  C) Vascular bundle   D) None of these ANSWER  The book ‘Plant Anatomy’ was published by Esau in –   A) Same year as she did her doctorate B) 1960 C) 1954 D) 1957 ANSWER  Which […]

CHAPTER 5 MORPHOLOGY OF FLOWERING PLANT Morphology Morphology is the branch of biological science that deals with the study of form, size, colour, structure and relative position of various parts of organisms. CHAPTER 5 MORPHOLOGY OF FLOWERING PLANT Morphology Flowering Plants The plant body consists of a main axis, which may be branched or unbranched bearing […]