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 Which of the following statements is true about Unio? One-chambered heart Two-chambered heart Four-chambered heart Three-chambered heart 2 / 50 Albumin is the most important protein in blood serum. It is produced by Liver Endocrine glands Heart Lungs 3 / 50 How many calories are in fat……………..? 4 Calories 8 Calories 6 Calories 9 Calories 4 / 50 Which of the following gasses is released during the process of respiration? None of the above Carbon dioxide Hydrogen Oxygen 5 / 50 The theory of natural selection says: All living organisms formed by divine All living organisms formed spontaneously None of the above All living organisms formed from ancestors 6 / 50 Vegetative propagation does not involve: Root parts Flower parts Leaf parts Stem parts 7 / 50 Which one doesn't belong to microtubules? Chloroplast Centrioles Cilia Flagella 8 / 50 The body’s normal metabolic rate is regulated by: Metaboloxin Epinephrine Prolactin Thyroid hormones 9 / 50 In which phase does the growth of bacteria take place? Lag phase Stationary phase Death phase Log phase 10 / 50 Which structure is formed as a result of sexual reproduction in Zygomycetes? Basidiocarp Sporangiophore Zygospore Ascocarp 11 / 50 How many ribs are present in the human body? 12 44 24 33 12 / 50 The largest desert in the world is: Gobi Thar Thal Sahara 13 / 50 In which type of fungi asexual reproduction is absent : Deuteromycetes Basidiomycetes Ascomycetes Zygomycetes 14 / 50 The mechanism of evolution called “natural selection” was proposed by: Darwin Mendel Lamarck Cuvier 15 / 50 Are fungi predominantly diploid or haploid? None Of these Diploid Haploid 16 / 50 Which of the following is not aging? Increase of body weight Dryness of skin Increase of number of cells Loss of hair pigment 17 / 50 Nutrition deficiency Population explosion Scurvy Congenital diseases Alzheimer 18 / 50 Nitrogen makes following percent of gases in atmosphere: 80% 20% 0.03% 78% 19 / 50 What is the role of progesterone hormone in women? Development of the uterine lining Follicle development Female secondary sex characteristics Spermatogenesis 20 / 50 The color of xanthophyll is: Yellow White Green Orange 21 / 50 Grassland in tropic climates have woody trees and are called Velt Savanna Prairies Pampas 22 / 50 An adult human endoskeleton consists of: Number varies by the individual 363 bones 639 bones 206 bones 23 / 50 Which of the followings is characteristic of parasitism? One organism kills and consumes another Two organisms nourish each other; both benefit Two organisms feed side by side from the same food Two organisms live together and neither is harmed 24 / 50 During emergencies, the “fight-or-flight” response: is stimulated by cortisol Decrease the heartrate is the result of aldosterone causing faster blood flow is caused by hormone secretions in the adrenal medulla 25 / 50 Carnivores represent what trophic level? Secondary consumers Primary consumers Decomposers Producers 26 / 50 Which of the followings are producers? Termites Grasshoppers Algae Bacteria 27 / 50 The forest of the world have been reduced by: 44% 60% 30% 54% 28 / 50 Which of the followings is mismatched? Thyroid hormone- pituitary gland (A) Oxytocin- hypothalamus Insulin -. pancreas Glucagon - pancrease 29 / 50 Long term regulations of activities are brought in plants by? Salt Minerals Hormones Organs 30 / 50 Blood received from each kidney is ……. 20% 10% 50 80% 31 / 50 Deserts generally occur in region where annual rain fall is less than: 5-10 cm 15-20 cm 250-270 cm 25-50 cm 32 / 50 What is the name of covering the central nervous system? Spinal cord None of these Skull Meninges 33 / 50 When the kinetochore fibers contract and microtubules elongate, the cell is present in which stage of mitosis? Leptophase Prophase Anaphase Telophase 34 / 50 The term Auxin was coined by: Walter 1928 F.W. Went 1926 T-yabuta 1970 Hoshimata 1910 35 / 50 The total amount of energy that is converted to organic compounds in a given area per unit of time is called the: Transpiration Net primary productivity Gross primary productivity Biomass 36 / 50 Bile: Body fluid isotonic to external environment Large amount of hypotonic urine contain little salt Kidney Liver 37 / 50 Glands in the endocrine system: None of the above Produce hormones that are secreted into the digestive tract Release hormones as rapidly as nerve impulses are transmitted Release hormones into the bloodstream or the fluid around cells 38 / 50 A series of mitotic divisions which take place in a zygote are called: Growth Cleavage (A) Fertilization Gastrulation 39 / 50 Fatal heart attacks in a young Kills the cancer cells High level of blood cholesterol is also done in cancer patients a condition in which liver cells lack receptor for removing cholesterol 40 / 50 Pachytene is a Third stage of prophase in meiosis Fourth stage of prophase in meiosis First stage of prophase in meiosis Second stage of prophase in meiosis 41 / 50 According to endosymbiotic theory mitochondria is: Photosynthetic bacteria undergoes photosynthesis Cellular body which produce energy Anaerobic bacteria which produces energy Aerobic bacteria which produces energy 42 / 50 What is the amount of blood contain in the human body? 6-7 liters 7-8 liters 5-6 liters 4-5 liters 43 / 50 How many bones are present in human ears? 6 8 3 9 44 / 50 How many senses does a human have? 6 5 9 4 45 / 50 Planaria has: None of the above Undifferentiated cells for regeneration Special cells for regeneration Differentiated cells for regeneration 46 / 50 Homologous structures: Have same functions but different structures Have same structures but different functions Have different structures and function None of the above 47 / 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 Went’s theorem Fischer’s theorem Hardy-Weinberg theorem 48 / 50 Plant need…………..type of nutrient light for photosynthesis? Six Two Three Four 49 / 50 The main objection on Lamarckism was that: It cannot pass from parent to offspring It provides raw material for evolution It can pass from parent to offspring A character inherited by an organism 50 / 50 Muscles are attached to bones by: Synovial membrane Ligaments None Tendons Your score is 0% Restart quiz
