DEB STUDY - The Competitive Exam Guide

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Presence of gill slits in the embryo of all vertebrates supports the theory of (a) organic evolution (b) recapitulation (c) metamorphosis (d) biogenesis Ans. (b) WBCS BIOLOGY MCQ  Q 2.  Appearance of ancestral characters in the new borne, such as tail, multiple mammae, etc., are known as (a) homologous (b) analogous (c) atavistic (d) vestigial Ans. (c)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  The exchange of materials between blood and interstitial fluid occurs only at the (a) Veins (b) Capillaries (c) Arteries (d) Arterioles Ans. (b) WBCS BIOLOGY MCQ  Q 2.  About how much blood is in the circulatory system of an average person? (a) 1 liter (b) 2 liters (c) 5 liters (d) 10 liters Ans. (c)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  RNA is found in— (A) Animal cell (B) Plant cell (C) Virus (D) All of the above Ans. (D) WBCS BIOLOGY MCQ  Q 2.  Mitochondrial membrane is a double layered structure composed of— (A) Lipids and proteins (B) Lipids and carbohydrates (C) Proteins and carbohydrates (D) Proteins and Ribonucleic acid Ans. (A)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Which of the following is a rich source of protein? (A) Wheat (B) Rice (C) Gram (D) Soya bean Ans. (D) WBCS BIOLOGY MCQ  Q 2.  Vitamin soluble in water is— (A) Vitamin A (B) Vitamin C (C) Vitamin D (D) Vitamin K Ans. (B)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  "Physical basis of living" is— (A) Cell (B) Protoplasm (C) Nucleus (D) Protein Ans. (B) WBCS BIOLOGY MCQ  Q 2.  How many bones are there in a human body? (A) 206 (B) 205 (C) 150 (D) 300 Ans. (A)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Which of the following has no blood but respires? (a) Earthworm (b) Hydra (c) Cockroach (d) Fish Ans. (b) WBCS BIOLOGY MCQ  Q 2.  Which type of respiratory organs are present in spiders and scorpions? (a) Book lungs (b) Gill books (c) Gills (d) Lungs Ans. (a)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Which of the following structures is thought to be exceptionally rich in hydrolytic enzymes? (a) Lysosomes (b) Microsome (c) Chromosomes (d) Endoplasmic reticulum Ans. (a) WBCS BIOLOGY MCQ  Q 2.  The selective digestion of cytoplasmic organelles by the lysosomes is called (a) Osmotrophy (b) Autophagy (c) Heterophony (d) Autolysis Ans. (b)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Generally the food chain has how many trophic levels? (a) One (b) Two (c) Three (d) Three or four Ans. (d) WBCS BIOLOGY MCQ  Q 2.  Correct path of energy flow in a system is (a) Producers Herbivores Carnivores Decomposers (b) Producers Carnivores Herbivores Decomposers (c) Herbivores Producers Carnivores Decomposers (d) Herbivores Carnivores Producers Decomposers Ans. (a)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Mechanical tissues are very poorly developed in (a) xerophytes (b) halophytes (c) hydrophytes (d) lithophytes Ans. (c) WBCS BIOLOGY MCQ  Q 2.  Desert can be converted into green land by (a) halophytes (b) psammophytes (c) tropical trees (d) oxylophytes Ans. (b)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  In man, expired air contains oxygen about (a) 4% (b) 10% (c) 16% (d) 20% Ans. (c) WBCS BIOLOGY MCQ  Q 2.  Oxygen is transported in blood mainly by (a) Leucocytes (b) Erythrocytes (c) Thromobocytes (d) Blood plasma Ans. (b)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  A normal man respires in a minute (a) 10—15 times (b) 14—18 times (c) 20—25 times (d) 25—30 times Ans. (b) WBCS BIOLOGY MCQ  Q 2.  Osmoregulation is control over the (a) Removal of nitrogen from the body (b) Concentrations of salt and water in the body (c) Osmotic properties of cell membranes (d) PH of the blood Ans. (b)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  The plasma resembles in is composition the filtrate produced in the glomerulus except for the presence of (a) Glucose (b) Amino acids (c) Proteins (d) Chlorides Ans. (c) WBCS BIOLOGY MCQ  Q 2.  Indicate correct statement for man? (a) Arteries always carry oxygenated blood while veins always carry deoxygenated blood (b) Arteries are provided with valves while veins are devoid of valves (c) Arteries always carry blood away from the heart, while veins always carry blood towards the heart (d) Venous blood is returned to left auricle Ans. (c)

    Biology MCQs For WBCS Exam   WBCS BIOLOGY MCQ  Q 1.  Which one of the following is responsible for guttation? (a) Root pressure (b) Transpiration (c) Photosynthesis (d) Osmosis Ans. (a) WBCS BIOLOGY MCQ  Q 2.  Which one of the following blood vessels in mammals would normally carry the largest amount of urea? (a) Dorsal aorta (b) Hepatic portal vein (c) Renal artery (d) Hepatic artery Ans. (c)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Which of the following is not heritable? (a) Point mutation (b) Chromosomal mutation (c) Somatic mutation (d) Gene mutation Ans. (c) WBCS BIOLOGY MCQ  Q 2.  Which of the following is a mutagen? (a) SO2 (b) CO2 (c) CO (d) HNO2 Ans. (d)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  If a couple has three daughters, what are the chances that the fourth child will be a son? (a) 100% (b) 75% (c) 50% (d) 0% Ans. (c) WBCS BIOLOGY MCQ  Q 2.  If a dihybrid pea plant heterozygous for flower colour (red dominant over white) and seed shape (round dominant over wrinkled) under goes selfing, the types of gametes produced are: (a) 2 (b) 4 (c) 8 (d) 16 Ans. (b)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Murrah is a high-yielding breed of (a) cow (b) hen (c) buffalo (d) sheep Ans. (c) WBCS BIOLOGY MCQ  Q 2. White Revolution is related to the increase in production of (a) egg (b) wool (c) milk (d) meat Ans. (c)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Bone forming cells are (a) Osteoblasts (b) Osteoclasts (c) Chondroblasts (d) Chondroclasts Ans. (a) WBCS BIOLOGY MCQ  Q 2.  A man was brought up at sea level while his brother spent all his life at an altitude of 10,000 feet. The latter will have (a) More active bone marrow (b) Lower blood pressure (c) Less subdermal fat (d) More active sweat glands Ans. (a)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  Endothelium of the inner surface of blood vessels in vertebrates is (a) Simple squamous epithelium (b) Columnar epithelium (c) Cuboidal epithelium (d) Ciliated cells Ans. (a) WBCS BIOLOGY MCQ  Q 2.  The epithelium best adapted for abody surface subject to abrasion is (a) Simple squamous (b) stratified squamous (c) stratified columnar (d) Simple cuboidal Ans. (b)

    Biology MCQs For WBCS Exam   WBCS BIOLOGY MCQ  Q 1.  External protective tissues of plants are (a) Cortex and epidermis (b) Pericycle and cortex (c) Epidermis and cork (d) Pericycle and cork Ans. (c) WBCS BIOLOGY MCQ  Q 2.  Bulliform cells are present (a) In upper epidermis of dicot leaves (b) In lower epidermis of monocot leaves (c) In upper epidermis of monocot leaves (d) In dicot stem Ans. (c)

    Biology MCQs For WBCS Exam WBCS BIOLOGY MCQ  Q 1.  The study of fish culture is called (a) Ophiology (b) Ichthyology (c) Herpetology „ (d) Pisciculture Ans. (d) WBCS BIOLOGY MCQ  Q 2.  Catla and rohu are examples of (a) freshwater fish (b) marine fish (c) brackish water fish (d) none of these Ans. (a)