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29 EVOLUTION EVOLUTION PRACTICE QUESTIONS Origin of Life: The origin of life is considered unique events in the history of universe. Huge cluster of galaxies comprises the universe. Galaxies contain stars and clouds of dust and smoke. Big Bang Theory attempts to explain the origin of universe. According to this theory, a huge explosion occurs […]

28 MOLECULAR BASIS OF INHERITANCE QUESTIONS MOLECULAR BASIS OF INHERITANCE QUESTIONS CHAPTER NOTES Monomer of nucleic acids are – A) Peptides B) Nucleosides C) Ribonucleosides D) None of these DNA and RNA are types of – A) Nucleotides B) Nucleosides C) Nucleic acids D) Nucleamides Length of DNA is usually defined as- A) Number of […]

28 MOLECULAR BASIS OF INHERITANCE MOLECULAR BASIS OF INHERITANCE PRACTICE QUESTIONS MOLECULAR BASIS OF INHERITANCE The DNA: DNA (Deoxyribonucleic Acid) and RNA (Ribonucleic Acid) are two types of nucleic acid found in living organisms. DNA acts as genetic material in most of the organisms. RNA also acts as genetic material in some organisms as in […]

27 PRINCIPLES OF INHERITANCE AND VARIATION PRINCIPLES OF INHERITANCE AND VARIATION Genetics is the subject that deals with A) inheritance B) variation of characteristics C) reproduction D) both (a) and (b) The basis of heredity is A) variation B) inheritance C) mutation D) linkage Humans knew from as early as 8000–1000 BC that one of […]

27 PRINCIPLES OF INHERITANCE AND VARIATION PRINCIPLES OF INHERITANCE AND VARIATION PRACTICE QUESTIONS Introduction: Genetics is the study of principles and mechanism of heredity and variation. Gregor Johann Mendel is known as ‘father of Genetics’. important attributes to the reproductive health of a society. Inheritance: Inheritance is the process by which characters are passed on […]

26 REPRODUCTIVE HEALTH QUESTIONS 26 REPRODUCTIVE HEALTH CHAPTER NOTES According to World Health Organisation, a reproductively healthy individual possesses A) Functionally and morphologically normal reproductive organs B) Normal emotional and behavioural interactions with society C) Total well-being in all aspects of reproductions D) All of these Which country commenced the action plans at national level […]

26 REPRODUCTIVE HEALTH REPRODUCTIVE HEALTH PRACTICE QUESTIONS Reproductive Health: Problem and Strategies India was amongst the first countries in the world to initiate to the programmed “family planning” initiated in 1951. Reproductive health in a society forms a crucial part of general health. Improved programs covering wider reproduction-related areas are currently in operation under the […]

25 HUMAN REPRODUCTION 25 HUMAN REPRODUCTION QUESTIONS The testes are situated outside the abdominal cavity within a pouch called (A) urethra                   (B) scrotum                  (C)penis                       (D)none of these In humans, sperms are produced in (A) epididymis (B) rete testis      (C) seminiferous tubules       (D) vas deferens Sertoli cells which line the seminiferous tubules from […]

25 HUMAN REPRODUCTION HUMAN REPRODUCTION PRACTICE QUESTION Human Reproductive System: The Human Reproductive System mainly consists of: The Male Reproductive System: The male reproductive system is positioned in the pelvis region and comprises a pair of testes in addition to the accessory glands, ducts, and the external genitalia. A pouch-like structure known as scrotum encloses […]

24 Sexual Reproduction in Flowering Plants Questions CHAPTER NOTES The end products of sexual reproduction is/ are – A) Fruit B) Seeds C) Flower       D) A & B both Floriculture deals with – A) Flower B) Seed culture C) Fruit          D) Both B & C   (a) (b) (c) (d) A Style Filament […]