Pharmacology Notes

Pharmacology   Question 1: Define Pharmacology, Pharmacy and Pharmacognosy? Answer: Pharmacology: Pharmacology is the combination of two Greek words. Pharmakon means drug and logy means to study or to discuss. Pharmacology is the study of drug composition, properties and medical applications.  OR  Pharmacology is the study of action of drug. Pharmacy: Pharmacy is the study of preparation […]

Man and His Environment

Man and His Environment   Question 1: Define the following terms? (1) Environment (2) Habitat (3) Ecology (4) Niche (5) Conservation. (6) Biomass. Answer: (1) Environment: The surrounding of an organism is called environment. Environment includes all the biotic and abiotic factors that influence an organism. (2) Habitat: The specific locality with a particular set of […]

Reproduction Notes

Reproduction Notes    Question1: What is Reproduction? What are different types of reproduction?   Answer: REPRODUCTION: Reproduction is defined as the production of individuals of the same species i.e. the next generation of species is called reproduction.   Types of reproduction: Reproduction is of two types.   1) A-Sexual Reproduction: The type of reproduction in which there is […]

Support and Movement

Support and Movement   Question1: Define Support, movement and locomotion? Answer: Support: support means to stand erect. Movement: Movement” is a general term meaning the act of changing place or position by entire body or by its parts. Locomotion: Locomotion is the movement of an animal as a whole from one place to another.   Question2: What is skeleton? […]

Inheritance Notes

Inheritance Notes   Q#1) Define the following. Inheritance.  2) Heridity 3)Variation 4) Genetics 5) Genes 6) Chromosome 7) Chromation 8) Genotype 9) Evolution 10) Allele.   Answer: 1) Inheritance: Characters that are transmitting from parents to offsprings are called inheritance. These characters are of two types’ (a) Heridity (b) Variation. Heridity : Characters in offsprings that resemble […]

Coordination and Control

Coordination and Control Question1: Explain what can happen if there is no coordination in the activities of organisms.    Coordination: the ability to use different parts of the body together smoothly and efficiently is called coordination.   Coordination and Control: The ability of an organism to keep the different body parts in an association; so that […]


Homeostasis   Question 1: What is homeostasis? What are the different types of homeostasis? Answer: HOMEOSTASIS Homeostasis is the combination of two Greek words, Homios means similar and stasis means standing still. The maintenance of the internal conditions of body at equilibrium, despite changes in the external environment is called homeostasis. “OR” The ability of a […]

Gaseous Exchanges in Plants and Animals – Questions and Answers

Gaseous Exchanges   Question 1: Define gaseous exchanges, breathing and cellular respiration? Answer: Gaseous exchanges: Taking in oxygen and giving out of carbon dioxide is termed as gaseous exchange.  “OR” The exchange of gases in body of living organisms through a characteristic way is called gaseous exchanges. Gaseous exchanges is the diffusion of gases from a […]

Transport in Plants and Animals – Questions and Answers

Class 9 Biology Notes – Chapter 9 Transport   Question#1): What is the primary function of transport system? Answer:The primary function of transport system is to maintain a link between all cells of the body and the external environment. It transports the nutrients and water to the points where they are to be used.   […]

Nutrition in Plants and Animals – Questions and Answers

Nutrition   Question#1) Define the following terms? I) Nutrition. II) Nutrients. III) Autotrophs.  IV) Heterotrophs. Answer: I) Nutrition: The process in which food is obtained or prepared, absorbed and converted into body substances for growth and energy, is called nutrition. II) Nutrients: Nutrients are the elements and compounds that an organism obtains and uses for […]