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 20% 10% 2 / 50 Carnivores represent what trophic level? Secondary consumers Primary consumers Producers Decomposers 3 / 50 When the kinetochore fibers contract and microtubules elongate, the cell is present in which stage of mitosis? Prophase Anaphase Leptophase Telophase 4 / 50 How many senses does a human have? 6 9 4 5 5 / 50 The mechanism of evolution called “natural selection” was proposed by: Cuvier Mendel Darwin Lamarck 6 / 50 The color of xanthophyll is: White Green Yellow Orange 7 / 50 What is the role of progesterone hormone in women? Follicle development Development of the uterine lining Female secondary sex characteristics Spermatogenesis 8 / 50 Albumin is the most important protein in blood serum. It is produced by Endocrine glands Lungs Heart Liver 9 / 50 The total amount of energy that is converted to organic compounds in a given area per unit of time is called the: Biomass Gross primary productivity Net primary productivity Transpiration 10 / 50 A series of mitotic divisions which take place in a zygote are called: Growth (A) Fertilization Gastrulation Cleavage 11 / 50 Long term regulations of activities are brought in plants by? Organs Minerals Salt Hormones 12 / 50 What is the name of covering the central nervous system? Skull Spinal cord Meninges None of these 13 / 50 How many calories are in fat……………..? 8 Calories 9 Calories 6 Calories 4 Calories 14 / 50 How many ribs are present in the human body? 24 44 33 12 15 / 50 According to endosymbiotic theory mitochondria is: Cellular body which produce energy Photosynthetic bacteria undergoes photosynthesis Anaerobic bacteria which produces energy Aerobic bacteria which produces energy 16 / 50 Pachytene is a Second stage of prophase in meiosis First stage of prophase in meiosis Fourth stage of prophase in meiosis Third stage of prophase in meiosis 17 / 50 Nitrogen makes following percent of gases in atmosphere: 0.03% 78% 20% 80% 18 / 50 The term Auxin was coined by: F.W. Went 1926 Walter 1928 T-yabuta 1970 Hoshimata 1910 19 / 50 In which type of fungi asexual reproduction is absent : Ascomycetes Basidiomycetes Deuteromycetes Zygomycetes 20 / 50 Homologous structures: Have same structures but different functions Have same functions but different structures Have different structures and function None of the above 21 / 50 The main objection on Lamarckism was that: It provides raw material for evolution A character inherited by an organism It cannot pass from parent to offspring It can pass from parent to offspring 22 / 50 Plant need…………..type of nutrient light for photosynthesis? Four Two Six Three 23 / 50 The forest of the world have been reduced by: 44% 54% 30% 60% 24 / 50 The largest desert in the world is: Gobi Thal Sahara Thar 25 / 50 Which one doesn't belong to microtubules? Cilia Chloroplast Centrioles Flagella 26 / 50 Which of the followings is mismatched? Glucagon - pancrease Thyroid hormone- pituitary gland Insulin -. pancreas (A) Oxytocin- hypothalamus 27 / 50 Are fungi predominantly diploid or haploid? None Of these Diploid Haploid 28 / 50 An adult human endoskeleton consists of: 363 bones Number varies by the individual 639 bones 206 bones 29 / 50 Which structure is formed as a result of sexual reproduction in Zygomycetes? Zygospore Basidiocarp Ascocarp Sporangiophore 30 / 50 Muscles are attached to bones by: Tendons Synovial membrane Ligaments None 31 / 50 How many bones are present in human ears? 8 9 3 6 32 / 50 The theory of natural selection says: All living organisms formed by divine None of the above All living organisms formed from ancestors All living organisms formed spontaneously 33 / 50 Planaria has: None of the above Special cells for regeneration Undifferentiated cells for regeneration Differentiated cells for regeneration 34 / 50 Fatal heart attacks in a young Kills the cancer cells is also done in cancer patients a condition in which liver cells lack receptor for removing cholesterol High level of blood cholesterol 35 / 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 36 / 50 Deserts generally occur in region where annual rain fall is less than: 250-270 cm 25-50 cm 15-20 cm 5-10 cm 37 / 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 Hardy-Weinberg theorem Fischer’s theorem Binomial theorem 38 / 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 39 / 50 Vegetative propagation does not involve: Flower parts Leaf parts Stem parts Root parts 40 / 50 Which of the following gasses is released during the process of respiration? Oxygen Carbon dioxide None of the above Hydrogen 41 / 50 The body’s normal metabolic rate is regulated by: Metaboloxin Thyroid hormones Prolactin Epinephrine 42 / 50 Bile: Body fluid isotonic to external environment Liver Large amount of hypotonic urine contain little salt Kidney 43 / 50 Grassland in tropic climates have woody trees and are called Prairies Pampas Savanna Velt 44 / 50 Nutrition deficiency Alzheimer Scurvy Congenital diseases Population explosion 45 / 50 Which of the following statements is true about Unio? Three-chambered heart Four-chambered heart Two-chambered heart One-chambered heart 46 / 50 What is the amount of blood contain in the human body? 4-5 liters 6-7 liters 7-8 liters 5-6 liters 47 / 50 Which of the followings are producers? Bacteria Grasshoppers Algae Termites 48 / 50 During emergencies, the “fight-or-flight” response: is caused by hormone secretions in the adrenal medulla Decrease the heartrate is the result of aldosterone causing faster blood flow is stimulated by cortisol 49 / 50 Which of the following is not aging? Increase of body weight Dryness of skin Increase of number of cells Loss of hair pigment 50 / 50 In which phase does the growth of bacteria take place? Stationary phase Death phase Lag phase Log phase Your score is 0% Restart quiz
