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