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  Cockroach Morphology MCQs The following MCQs will help you to understand more about ‘Morphology of cockroach’. MCQ.1):The arthropod cockroach belongs to Class ………………………………………. a) Calcerea b) Desmospongia c) Insecta d) Hexactinellida MCQ.2): The cockroaches are mostly active at night, is also called as ……………………………………………. a) Nocturnal b) Carnivorous c) Herbivorous d) None of them MCQ. 3): In which of the following parts cockroach body is divided? a) Head b) Thorax c) Abdomen d) All of them MCQ.4): Head of the cockroach is pear shaped and consists of ……………………………… segments. a) Three b) Four c) Five d) Six MCQ.5): The …………………………………. Contains three segments of Prothorax, Mesothorax and metathorax a) Abdomen b) Thorax c) Antenna d) Head MCQ.6): The cockroaches are classified in class Insecta because ………………………………………………………….. a) It does not consists of wings b) The wings are attached to the abdomen c) Wings are absent in cockroaches d) One-two pairs of wings attached to thorax MCQ.7): Th...

Class 11 Important Questions for Biology Chapter 1 Living World Question 1: Why are living organisms classified? ANSWER: A large variety of plants, animals, and microbes are found on earth. All these living organisms differ in size, shape, colour, habitat, and many other characteristics. As there are millions of living organisms on earth, studying each of them is impossible. Therefore, scientists have devised mechanisms to classify all living organisms. These methods of classification are based on rules and principles that allow identification, nomenclature, and finally classification of an organism. Question 2: Why are the classification systems changing every now and then? ANSWER: Millions of plants, animals, and microorganisms are found on earth. Many of these have been identified by the scientists while many new species are still being discovered around the world. Therefore, to classify these newly discovered species, new systems of classification have to be devised every now and t...

  MCQ Questions on Animal Kingdom 1. Which class has the largest number of animals? (a) Fishes (b) Reptiles (c) Insects (d) Mammals Answer: (c) Insects 2. Identify the characteristic of acoelomates (a) Absence of mesoderm (b) Absence of brain (c) Coelom that is incompletely lined with a mesoderm (d) Solid body without a cavity surrounding internal organs Answer: (d) Solid body without a cavity surrounding internal organs 3. Salamander belongs to the class (a) Pisces (b) Aves (c) Reptiles (d) Amphibian Answer: (d) Amphibian 4. Flame cells are the excretory structures for (a) Annelida (b) Coelenterates (c) Platyhelminthes (d) Echinodermata Answer: (c) Platyhelminthes 5. Select the correct pair (a) Arthropoda – silver fish (b) Pisces – jelly fish (c) Echinodermata – cuttle fish (d) Mollusca – star fish Answer: (a) Arthropoda – silver fish 6. Ascaris is characterized by (a) Presence of true coelom and metamerism (b) Presence of true coelom but the absence of metamerism (c) Absence of t...

  MCQ Questions on Plant Kingdom 1. Which plant kingdom can survive both on land and in the water? (a) Tracheophyta (b) Pteridophyta (c) Thallophyta (d) Bryophyta Answer: (d) Bryophyta 2. A plant that has seeds but no flowers and fruits? (a) Bryophytes (b) Gymnosperms (c) Mosses (d) Pteridophytes Answer: (b) Gymnosperms 3. Most primitive vascular plants? (a) Mosses (b) Cycads (c) Kelps (d) Ferns Answer: (d) Ferns 4. Angiosperms are the dominant flora because of (a) Domestication by man (b) Power of adapting in diverse habitats (c) Self-pollination property (d) Property of producing a large number of seeds Answer: (b) Power of adapting in diverse habitats 5. Plants reproducing by spores are grouped under (a) Bryophytes (b) Sporophytes (c) Cryptogams (d) Thallophytes Answer: (c) Cryptogams 6. Plants having vascular tissue without seeds (a) Angiosperm (b) Pteridophytes (c) Bryophytes (d) Gymnosperms Answer: (b) Pteridophytes 7. Double fertilization is the characteristic of (a) Algae (...

Virus and Viriods MCQs  1. A virus is made up of _______. (a) Protein coat and nucleic acid (b) Protein coat and mitochondria (c) Nucleic acid and cell membrane (d) Nucleic acid, cell wall and cell membrane Sol: (a) Protein coat and nucleic acid. 2. The protein coat of viruses that enclose the genetic material is called _______. (a) Virion (b) Capsid (c) Peplomers (d) Capsomers Sol:(b) Capsid. 3. Which of the following is the genome of the virus? (a) DNA (b) RNA (c) DNA or RNA (d) DNA and RNA Sol:(c) DNA or RNA 4. The viral genome is enveloped in a protein coat known as (a) Capsid (b) Outer envelope (c) Capsomere (d) Nucleic Sol: (a) Capsid. 5. Viruses that attack bacteria are called_______. (a) Virophage (b) Lysophage (c) Bacteriophage (d) None of the above Sol:(c) Bacteriophage. 6. Which of the following statements are true about the viruses? (a) Free-living (b) Obligate parasites (c) Both (a) and (b) (d) None of the above Sol:(b) Obligate parasites. 7. Which of the following has...

  Biological Classification MCQs 1. Which of the following organisms can be found in extreme saline conditions? a. Eubacteria b. Archaebacteria c. Cyanobacteria d. Mycobacteria 2. Linnaeus used which kingdom of classification? a. Artificial system b. Natural system c. Phylogenetic system d. Asexual system 3. Smallest taxon of classification is _______. a. Kingdom b. Family c. Variety d. Species 4. In which of the following kingdom are Archaea and Nitrogen-fixing organisms classified? a. Animalia b. Plantae c. Monera d. Fungi 5. Bentham and Hooker gave which system of classification? a. Numerical b. Phylogenetic c. Artificial d. Natural 6. What is the main basis of classification in the five-kingdom system? a. Structure of the nucleus b. Structure of cell wall c. Asexual Reproduction d. Mode of Nutrition 7. Which of the following statements is false about the fungi? a. They are eukaryotes b. They are heterotrophs c. They possess a purely cellulosic cell wall d. None of the above 8. ...

Chapter Revision Structure of Atom Class 9 1.The nucleons are I. Protons and electrons II. Neutrons and electrons III. Protons and neutrons IV. None of these 2. The isotope deuterium of hydrogen has I. No neutrons and one proton II. One neutrons and two protons III. One electron and two neutron IV. One proton and one neutron 3. The electrons present in the outermost shell are called I. Valency electrons II. Octate electrons III. Duplet electrons IV. Valence electrons 4. An alpha particle contains I. 4 positive charge and 2 mass unit II. 2 positive charge and 4 mass unit III. 2 positive charge and 2 mass unit IV. 4 positive charge and 4 mass unit 5. The atomic number of sodium is 11 and its mass number is 23. It has I. 11 neutrons and 12 protons II. 12 protons and 11 electrons III. 11 electrons and 12 neutrons IV. 12 electrons and 11 neutrons 6. The electronic configuration of chlorine is I. 2,7 II. 2,8,8,7 III. 2,8,7 IV. 2,7,8 7. The isotope used to remove the brain tumours...