Complete Biology Class 2023 PDF

Who introduced by dividing the Monera into Archaebacteria (or Archaea) and Eubacteria? A. Ernst Haeckel B. Robert Whittaker C. Woese D. None of these Blue-green algae or cyanobacteria, and mycoplasma belongs to which kingdom? A. Monera B. Protista C. Fungi D. Plantae Plants with hidden repro...

Who introduced by dividing the Monera into Archaebacteria (or Archaea) and Eubacteria? A. Ernst Haeckel B. Robert Whittaker C. Woese D. None of these Blue-green algae or cyanobacteria, and mycoplasma belongs to which kingdom? A. Monera B. Protista C. Fungi D. Plantae Plants with hidden reproductive organs are called _______ A. Gymnosperms B. Phanerogams C. Cryptogams D. Angiosperm which of the following is/are correct A. Thallophyta do not have well-differentiated body B. there is no specialised tissue for the conduction of water and other substances in Bryophyta C. the plant body is differentiated into roots, stem and leaves and has specialised tissue for the conduction of water and other substances in Pteridophyta D. all of the above which among the following is/are correct 1. Monera do not have a defined nucleus or organelles 2. fungi are prokaryotic organisms 3. protista are heterotrophic eukaryotic organisms. A. 1 only B. 2 and 3 only C. 1 and 3 only D. 1, 2 and 3 Ulothrix, Cladophora, Ulva are examples for A. THALLOPHYTA B. BRYOPHYTA C. PTERIDOPHYTA D. ANGIOSPERMS These animals are cold-blooded, have scales and breathe through lungs. While most of them have a three- chambered heart A. Reptiles B. Amphibians C. Aves D. Pisces Which of the following statements is/are correct A. Annelid animals are bilaterally symmetrical and triploblastic, but in addition they have a true body cavity B. Plathyhelmithes body is bilaterally symmetrical However, there is no true internal body cavity or coelom C. Arthropods are bilaterally symmetrical and segmented D. all of the above The free living cells in pond water is discovered by? A. Robert Hooke B. Leeuwenhoek C. Purkinje D. Virchow Which of the following about Plasma membrane is Incorrect? A. It prevents movement of some materials that is why it is selectively permeable membrane. B. The plasma membrane is made up of organic molecules called lipids and proteins. C. We can observe the structure of the plasma membrane only through an electron microscope. D. It also prevents cell from engulfing the food and other material from its external environment. Which of the following is Incorrect? A. Plant cells , In addition to plasma membrane have another rigid covering called cell wall. B. The cell wall lies outside the plasma membrane. C. The Animal cell is mainly composed of cellulose. D. Cell walls permit the cells of plants fungi and bacteria to withstand hypotonic external media without bursting. Which of the following is Incorrect? A. The nucleus has triple layered covering called nuclear membrane. B. The nucleus contains chromosomes which are visible as rod shaped structures. C. Chromosomes are composed of DNA and Protein D. In a cell which is not dividing , this DNA is present as part of Chromosomes. A. only one pair B. Only two pair C. Only three pair D. All four incorrect Which of the following is correct? A. Bacteria has no nuclear membrane. B. The chlorophyll in photosynthetic bacteria is associated with plastids. C. The chlorophyll in Eukaryotic cell is associated with plastids. D. All are incorrect which of the following pairs is/are correctly matched 1. endoplasmic reticulum - forms a network system. 2. lysosomes - membrane-bound sacs filled with digestive enzymes 3. Vacuoles-storage sacs for solid or liquid contents. A. 1 and 2 only B. 2 and 3 only C. 1 and 3 only D. 1, 2 and 3 which among the following present only in plant cells A. Plastids B. Golgi apparatus C. endoplasmic reticulum D. Mitochondria  Which of the following is not correctly matched? A. Golgi apparatus - arrannged in cisterns B. Mitochondria - two membrane coverings C. Endoplasmic reticulum - looks similar to cell wall D. Endoplasmic reticulum - looks similar to cell membrane. Leucoplasts are primarily organnels in which material/(s) such as______is/are stored A. Oils B. Starch C. Protein D. All  Apical meristem is present at which among the following A. near the node B. tips of stems and roots C. only at tip of root D. only at tip of stem Which is not true for Cells of meristematic tissue ? A. very active B. have dense cytoplasm C. Thick cellulose walls D. Prominent nuclei which among the following is not correct about parenchyma tissue A. Parenchyma is the most common simple permanent tissue B. This tissue generally stores food C. parenchyma type which contains large air cavities is called chlorenchyma D. Parenchyma are usually loosely arranged, Which tissue is present in stems around Vascular bundles, in the veins of leaves and in the hard covering of seeds and nuts. A. sclerenchyma B. collenchyma. C. aerenchyma D. Parenchyma Which of the following is not true about epidermis? A. Most epidermal cells are relatively flat. B. The epidermis is usually made up of single layer of cells C. Epidermis protects all parts of the plant. D. Most epidermal cells have their outer and side walls thinner than the inner wall which among the following is not correct regarding complex permanent tissue A. Xylem and phloem are examples of such complex tissues. B. Xylem consists of sieve cells, sieve tubes. C. Phloem is made up of companion cells, phloem fibres etc D. Complex tissues are made of more than one type of cells Which of the following is living? A. Phloem fibres B. Sieve tubes C. Tracheids D. Vessels Which of the following pairs is/are correctly matched 1. squamous epithelium-lining of the mouth and oesophagus 2. columnar epithelial - lining of kidney tubules 3. Cuboidal epithelium -inner lining of the intestine A. 1 only B. 2 and 3 only C. 1 and 3 only D. 1, 2 and 3 which of the following statements is/are correct 1. Tendons connect muscles to bones 2. Ligaments connect bones with bones. A. 1 only B. 2 only C. both 1 and 2 D. none of the above which among the following is not a type of connective tissues A. Areolar tissue B. Adipose tissue C. Nervous tissue D. Bone Where can you find Cartilage? A. Nose B. Trachea C. Larynx D. All of these The cells of Striated muscles are A. long,cylindrical,unbranched and multinucleate B. long,cylindrical,branched and multinucleate C. long,cylindrical,unbranched and uninucleate D. long,cylindrical,branched and uninucleate Which of the following pair (s) is/are correct? A. Helicobacter pylori - peptic ulcers B. Leishmania - kala-azar. C. Staphylococci - sleeping sickness D. Trypanosoma - Acne Which one of the following is not a viral disease? A. Dengue B. AIDS C. Typhoid D. Influenza Which of the following provides us with necessary fats? A. pigeon pea B. lentil C. linseed D. Black gram Hybridisation refers to crossing between genetically dissimilar plants. This crossing may be A.Intervarietal B. interspecific C. intergeneric D. All of these There are several nutrients which are essential for plants,which of the following is not a Micronutrients? A. Manganese B. Copper C. Phosphorus D. Molybdenum which of the following statements is/are correct A. The process in which farm waste material like livestock excreta (cow dung etc.), vegetable waste, animal refuse, domestic waste, sewage waste, straw, eradicated weeds etc. is decomposed in pits is known as composting. B. The compost is rich in organic matter and nutrients C. Compost is also prepared by using earthworms to hasten the process of decomposition of plant and animal refuse. This is called vermi- compost. D. All of thse which of the following statements is/are correct A. The growing of different crops on a piece of land in a pre-planned succession is known as crop rotation B. Inter -cropping is growing two or more crops simultaneously on the same field in a definite pattern C. Mixed cropping is growing two or more crops simultaneously on the same piece of land D. Xanthium,Parthenium and Cyperinus rotundus are examples of Mixed cropping. Aseel and Leghorn are variety of ? A.Bos bubalis B. Bos indicus C. Chicken D. Fish Which of the following is /are correct? 1. Catlas are surface feeders, 2. Rohus feed in the middle-zone of the pond. 3.Mrigals and Common Carps are bottom feeders 4. Grass Carps feed on the weeds A. 1 and 2 only B. 3 and 4 only C. 2 and 3 only D. All of these Tuna,bhetki are varieties of? A.Bos bubalis B. Bos indicus C. Chicken D. Fish Which of the following is /are correct about photosynthesis? A. Carbon and energy requirements of the autotrophic organism are fulfilled by photosynthesis B. The carbohydrates which are not used immediately are stored in the form of starch in autotrophs C. It is the process by which autotrophs take in substances from the outside and convert them into stored forms of energy D. All are correct Exchange of gases occurs across the surface of A. Stems B. Roots C. Leaves D.All of these which of the following is/are correct 1. salivary amylase that breaks down starch which is a complex molecule to give simple sugar 2. gastric glands present in the wall of the stomach. These release hydrochloric acid, a protein digesting enzyme called pepsin, and mucus. 3. The pancreas secretes pancreatic juice which contains enzymes like trypsin for digesting proteins and lipase for breaking down emulsified fats A. 1 and 2 only B. 2 and 3 only C. 1 and 3 only D. 1, 2 and 3 which of the following is/are correct A. Meat is easier to digest, hence carnivores like tigers have a shorter small intestine B. The enzymes present in small intestine finally convert the proteins to amino acids C. The enzymes present in small intestine finally convert the complex carbohydrates into glucose and fats into fatty acids and glycerol D. All of these The breakdown of pyruvate to give carbon dioxide, water and energy takes place in A. cytoplasm. B. chloroplast. C. mitochondria. D. nucleus which of the following is/are correct A. Since the amount of dissolved oxygen is fairly low compared to the amount of oxygen in the air, the rate of breathing in aquatic organisms is much faster than that seen in terrestrial organisms B. The alveoli provide a surface where the exchange of gases can take place. C. Break- down of pyruvate using oxygen takes place in the Cytoplasm. D. Carbon dioxide is more soluble in water than oxygen is and hence is mostly transported in the dissolved form in our blood. which of the following is/are correct 1. right atrium- De-oxygenated blood comes from the body 2. left atrium- Oxygen-rich blood from the lungs comes 3. left ventricle - blood is pumped out to the body A. 1 and 2 only B. 2 and 3 only C. 1 and 3 only D. 1, 2 and 3 which of the following is/are correct 1. veins are the vessels which carry blood away from the heart to various organs of the body 2. Arteries collect the blood from different organs and bring it back to the heart. A. 1 only B. 2 only C. both 1 and 2 D. none of the above Which of the following is/are Incorrect about Lymph? A. It is similar to the plasma of blood but colourless and contains less protein. B. It is similar to the plasma of blood but colourless and contains more protein. C. Lymph carries digested and absorbed fat from intestine and drains excess fluid from extra cellular space back into the blood D. All are incorrect which of the following is/are correct 1. Thyroxin regulates carbohydrate, protein and fat metabolism in the body 2. pitutory hormone regulates growth and development of the body. 3. testosterone in males and oestrogen in females associated with puberty A. 1 and 2 only B. 2 and 3 only C. 1 and 3 only D. 1, 2 and 3 Which of the following is a plant hormone? A. Insulin B. Thyroxin C. Oestrogen D. Cytokinin. Which of the following is correct A. Auxin =promote cell division B. Cytokinins= helps the cells to grow longer C. Abscisic acid =hormone which inhibits growth D. All the above options are correct The urine forming in each kidney eventually enters a long tube called; A. ureter B. Urethra C. Urinary bladder D. Nephrons which of the following is/are correct 1. kidney has large numbers of these filtration units called nephrons packed close together 2. Each capillary cluster in the kidney is associated with the cup-shaped end of a coiled tube called Bowman’s capsule A. 1 only B. 2 only C. both 1 and 2 D. none of the above Activities like walking in a straight line, riding a bicycle, picking up a pencil. These are possible due to a part of the hind-brain called A. cerebrum B. cerebellum C. medulla D. all the above The gap between two neurons is called a A. dendrite. B. synapse. C. axon. D. impulse which of the following is/are correct 1. involuntary actions including blood pressure, salivation and vomiting are controlled by the medulla in the hind-brain. 2. cerebellum is responsible for precision of voluntary actions and maintaining the posture and balance of the body A. 1 only B. 2 only C. both 1 and 2 D. none of the above Organisms such as Hydra use regenerative cells for reproduction in the process of A. Budding B. Binary fission C. vegetative propagation D. Spore formation which of the following is/are correct 1. Pistil is present in the centre of a flower and is the male reproductive part. 2. Stamen is the female reproductive part and it produces pollen grains A. 1 only B. 2 only C. both 1 and 2 D. none of the above Which of the following is not a part of the female reproductive system in human beings? A. Ovary B. Uterus C. Vas deferens D. Fallopian tube The most significant feature of vegetative propagation is that A. it is a method of producing a large number of individuals genetically identical to the parent. B. it is a method of producing a large number of individuals genetically different from the parent C. it ensures that the progeny individuals are resistant to diseases and pests. D. it is an age old practice. An example of homologous organs is A. our arm and a dog’s fore-leg. B. our teeth and an elephant’s tusks. C. potato and runners of grass. D. all of the above. half the children will be boys and half will be girls. All children will inherit an X chromosome from their mother regardless of whether they are boys or girls. which among the following is correct A. the sex of the children will be determined by what they inherit from their Mother B. A child who inherits an X chromosome from father will be a boy C. A child who inherits a Y chromosome from father will be a boy D. None of the above If a round, green seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea plant (rr YY), the seeds produced in F1 generation are (a) round and yellow (b) round and green (c) wrinkled and green (d) wrinkled and yellow The process of secretion of water droplets from the pores of some vascular plants is A. translocation B. Guttation C. transpiration D. Respiration Which one of the following is an example of renewable resource ? (a) Coal (b) Petroleum (c) Wildlife (d) Natural gas