July 2020

Class 11 – Biology Chapter 16 – Digestion and Absorption Question 1. Choose the correct answer among the following: (a) Gastric juice contains (i) pepsin, lipase and rennin (ii) trypsin, lipase and rennin (iii) trypsin, pepsin and lipase (iv) trypsin,…

Class 11 – Biology Chapter 15 – Plant Growth and Development Question 1. Define growth, differentiation, development, dedifferentiation, redifferentiation, determinate growth, meristem and growth rate. Answer : Growth is defined as a vital process which brings about an irreversible and…

Class 11 – Biology Chapter 14 – Respiration in Plants Question 1. Give the schematic representation of an overall view of Krebs’ cycle. Answer : Question 2. Differentiate between (a) Respiration and Combustion (b) Glycolysis and Krebs’cycle (c) Aerobic respiration…

Class 11 – Biology Chapter 13 – Photosynthesis in Higher Plants Question 1. By looking at a plant externally can you tell whether a plant is C3 or C4 ? Why and how? Answer : It is not possible to distinguish…

Class 11 – Biology Chapter 12 – Mineral Nutrition Question 1.’All elements that are present in a plant need not be essential to its survival’. Comment. Answer : Most of the mineral elements present in the soil enter plants through…

Class 11 – Biology Chapter 11 – Transport in Plants Question 1.What are the factors affecting the rate of diffusion? Answer : Factors affecting the rate of diffusion are : Density – Rate of diffusion of a substance is inversely…

Class 11 – Biology Chapter 10 – Cell Cycle and Cell Division Question 1. What is the average cell cycle span for a mammalian cell? Answer : 24 hours. Question 2. Distinguish cytokinesis from karyokinesis. Answer : Differences between cytokinesis…

Class 11 – Biology Chapter 9 – Biomolecules Question 1. What are macromolecules ? Give examples. Answer : Macromolecules are large high molecular weight substances with complex molecular structure and occur in colloidal state (being insoluble) in intracellular fluid. These…

Class 11 – Biology Chapter 7 – Structural Organisation in Animals Question 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…

Class 11 – Biology Chapter 6 – Anatomy of Flowering Plants Question 1.State the location and function of different types of meristems. Answer : Meristems are of three types on the basis of their location in plant body: (i) Apical…

Class 11 – Biology Chapter 5 – Morphology of Flowering Plants Question 1.What is meant by modification of root? What type of modification of root is found in the: (a) Banyan tree (b) Turnip (c) Mangrove trees Answer : Roots…