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