Biology Test 2 Please don't use any search browser to find the answer. Just do it yourself so you can measure your knowledge power.Best of Luck! Please! Enter Password 1 / 50 Deserts generally occur in region where annual rain fall is less than: 25-50 cm 15-20 cm 250-270 cm 5-10 cm 2 / 50 Bile: Large amount of hypotonic urine contain little salt Liver Body fluid isotonic to external environment Kidney 3 / 50 In which type of fungi asexual reproduction is absent : Zygomycetes Basidiomycetes Deuteromycetes Ascomycetes 4 / 50 Which one doesn't belong to microtubules? Flagella Cilia Chloroplast Centrioles 5 / 50 An adult human endoskeleton consists of: 206 bones 363 bones Number varies by the individual 639 bones 6 / 50 During emergencies, the “fight-or-flight” response: is the result of aldosterone causing faster blood flow is caused by hormone secretions in the adrenal medulla Decrease the heartrate is stimulated by cortisol 7 / 50 Which structure is formed as a result of sexual reproduction in Zygomycetes? Sporangiophore Zygospore Ascocarp Basidiocarp 8 / 50 Vegetative propagation does not involve: Leaf parts Root parts Flower parts Stem parts 9 / 50 How many calories are in fat……………..? 4 Calories 8 Calories 9 Calories 6 Calories 10 / 50 What is the amount of blood contain in the human body? 7-8 liters 6-7 liters 5-6 liters 4-5 liters 11 / 50 Which of the following gasses is released during the process of respiration? Hydrogen Oxygen None of the above Carbon dioxide 12 / 50 The forest of the world have been reduced by: 30% 54% 44% 60% 13 / 50 A series of mitotic divisions which take place in a zygote are called: Gastrulation Growth (A) Fertilization Cleavage 14 / 50 How many ribs are present in the human body? 44 24 12 33 15 / 50 Which of the followings are producers? Algae Bacteria Grasshoppers Termites 16 / 50 What is the role of progesterone hormone in women? Development of the uterine lining Spermatogenesis Female secondary sex characteristics Follicle development 17 / 50 The mechanism of evolution called “natural selection” was proposed by: Darwin Lamarck Mendel Cuvier 18 / 50 Nitrogen makes following percent of gases in atmosphere: 80% 78% 20% 0.03% 19 / 50 Grassland in tropic climates have woody trees and are called Pampas Velt Prairies Savanna 20 / 50 The main objection on Lamarckism was that: A character inherited by an organism It cannot pass from parent to offspring It can pass from parent to offspring It provides raw material for evolution 21 / 50 In which phase does the growth of bacteria take place? Death phase Stationary phase Lag phase Log phase 22 / 50 Plant need…………..type of nutrient light for photosynthesis? Three Six Two Four 23 / 50 The body’s normal metabolic rate is regulated by: Thyroid hormones Metaboloxin Epinephrine Prolactin 24 / 50 The theory of natural selection says: All living organisms formed spontaneously None of the above All living organisms formed from ancestors All living organisms formed by divine 25 / 50 Fatal heart attacks in a young a condition in which liver cells lack receptor for removing cholesterol is also done in cancer patients High level of blood cholesterol Kills the cancer cells 26 / 50 Which of the followings is characteristic of parasitism? Two organisms live together and neither is harmed Two organisms nourish each other; both benefit One organism kills and consumes another Two organisms feed side by side from the same food 27 / 50 Pachytene is a Second stage of prophase in meiosis Third stage of prophase in meiosis Fourth stage of prophase in meiosis First stage of prophase in meiosis 28 / 50 The largest desert in the world is: Sahara Thar Gobi Thal 29 / 50 The shuffling of alleles due to meiosis and random fertilization having no effect on over all genetic structure of a population signifies: Binomial theorem Hardy-Weinberg theorem Fischer’s theorem Went’s theorem 30 / 50 When the kinetochore fibers contract and microtubules elongate, the cell is present in which stage of mitosis? Telophase Leptophase Anaphase Prophase 31 / 50 Which of the followings is mismatched? Glucagon - pancrease (A) Oxytocin- hypothalamus Insulin -. pancreas Thyroid hormone- pituitary gland 32 / 50 Homologous structures: Have same functions but different structures None of the above Have same structures but different functions Have different structures and function 33 / 50 Albumin is the most important protein in blood serum. It is produced by Heart Lungs Liver Endocrine glands 34 / 50 Which of the following is not aging? Increase of number of cells Dryness of skin Increase of body weight Loss of hair pigment 35 / 50 The color of xanthophyll is: White Yellow Orange Green 36 / 50 The total amount of energy that is converted to organic compounds in a given area per unit of time is called the: Net primary productivity Gross primary productivity Transpiration Biomass 37 / 50 Are fungi predominantly diploid or haploid? Diploid Haploid None Of these 38 / 50 Which of the following statements is true about Unio? Two-chambered heart One-chambered heart Three-chambered heart Four-chambered heart 39 / 50 Nutrition deficiency Congenital diseases Alzheimer Scurvy Population explosion 40 / 50 Blood received from each kidney is ……. 50 80% 20% 10% 41 / 50 Glands in the endocrine system: None of the above Release hormones into the bloodstream or the fluid around cells Produce hormones that are secreted into the digestive tract Release hormones as rapidly as nerve impulses are transmitted 42 / 50 Muscles are attached to bones by: Synovial membrane Ligaments Tendons None 43 / 50 How many bones are present in human ears? 3 6 8 9 44 / 50 Carnivores represent what trophic level? Producers Secondary consumers Decomposers Primary consumers 45 / 50 According to endosymbiotic theory mitochondria is: Cellular body which produce energy Anaerobic bacteria which produces energy Aerobic bacteria which produces energy Photosynthetic bacteria undergoes photosynthesis 46 / 50 Long term regulations of activities are brought in plants by? Organs Minerals Salt Hormones 47 / 50 How many senses does a human have? 4 6 5 9 48 / 50 Planaria has: Differentiated cells for regeneration None of the above Special cells for regeneration Undifferentiated cells for regeneration 49 / 50 The term Auxin was coined by: Hoshimata 1910 T-yabuta 1970 Walter 1928 F.W. Went 1926 50 / 50 What is the name of covering the central nervous system? Spinal cord Skull Meninges None of these Your score is 0% Restart quiz
