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