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