Chapter 9: Biomolecules
NCRT TEXTBOOK QUESTIONS SOLVED 1. What are macromolecules? Give examples.Solution: Macromolecules are large high molecular weight substances with complex molecular structure and occur in colloidal state (being insoluble) in intracellular fluid. These are formed by polymerization of large…
Chapter 8: Human Health and Disease
1.What are the various public health measures, which you would suggest as safeguard against infectious diseases?Ans. The various public health measures against infectious diseases includes the following –1.Education – People should be educated about the infectious diseases so that…
Chapter 8: Cell The Unit of Life
NCRT TEXTBOOK QUESTIONS SOLVED 1.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…
Chapter 1: Matter in Our Surroundings
NCERT Solutions For Class 9 Science Chapter 1 Matter in Our Surroundings IN-TEXT QUESTIONS SOLVED NCERT Textbook for Class 9 Science – Page 3Question 1. Which of the following are matter?Chair, air, love, smell, hate, almonds, thought,…
Chapter 7: Evolution
Evolution Chapter Class 12 NCERT Q1. Explain antibiotic, resistance observed in bacteria in light of Darwinian selection theory.Ans: According to Darwin, environment selects organisms with favourable variations and these organisms are allowed to survive. When a bacterial population…
Chapter 7: Structural Organisation in Animals
1. Answer in one word or one line.(i) Give the common name of Periplaneta americana.(ii) How many spermathecae are found in earthworm?(iii) What is the position of ovaries in cockroach?(iv) How many segments are present in the…
Poem 2: An Elementary School Classroom in a Slum
An Elementary School Classroom in a Slum NCERT Text Book Questions and Answers An Elementary School Classroom in a Slum Think it about Question 1.Tick the item which best answers the following : (a) The tall girl…
Poem 3: Keeping Quiet
Keeping Quiet NCERT Text Book Questions and Answers Keeping Quiet Think it out Question 1.What will counting upto twelve and keeping still help us achieve ?Answer:The poet suggests that the people should discontinue their nasty activities and…
Poem 4: A Thing of Beauty
A Thing of Beauty NCERT Text Book Questions and Answers A Thing of Beauty Think it out Question 1.List the things of beauty mentioned in the poem.Answer:The poet refers to objects of nature as well as creation…
Poem 2: The Laburnum Top
The Laburnum Top NCERT Text Book Questions and Answers The Laburnum Top Think it out Question 1.What do you notice about the beginning and the ending of the poem ?Answer:The poem begins with absolute silence on the laburnum…
