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Home⇒ Everyday Science GK⇒ General biology
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Q61 ⇒ Photosynthesis takes place faster in white light [other wrong options] [Discuss in forum] yellow light red light darkness |
Q62 ⇒ Radioactivity is a phenomenon of the spontaneous emission of All of the above [other wrong options] [Discuss in forum] protons (alpha particles) electrons (beta particles) gamma rays (short wave electromagnetic waves) |
Q63 ⇒ One of the following is not a function of bones. Secretion of hormones for calcium regulation in blood and bones [other wrong options] [Discuss in forum] Place for muscle attachment Protection of vital organs Production of blood corpuscles |
Q64 ⇒ Plants hormone that induces cell division is kinins [other wrong options] [Discuss in forum] auxins gibberellins domins |
Q65 ⇒ Pollen grains in plants are produced in flower [other wrong options] [Discuss in forum] roots leaves stem |
Q66 ⇒ Plants receive their nutrients mainly from soil [other wrong options] [Discuss in forum] chlorophyll atmosphere light |
Q67 ⇒ Number of chromosomes in Down's syndrome is 47 [other wrong options] [Discuss in forum] 46 48 49 |
Q68 ⇒ Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false? By denitrification [other wrong options] [Discuss in forum] By cyanobacteria By electrical discharges in the atmosphere By industrially synthesised fertilizer |
Q69 ⇒ Plant have ____ while animals lack it. cellulose [other wrong options] [Discuss in forum] starch protein fat |
Q70 ⇒ Most of the red, blue and purple colours of plants are due to a pigment called anthocyanin [other wrong options] [Discuss in forum] carotene chlorophyll xanthophylls |
Q71 ⇒ Organic Substances which, in very small amounts, control growth and development called hormones [other wrong options] [Discuss in forum] vitamins enzymes None of the above |
Q72 ⇒ Ptyalin is an enzyme produced in the salivary glands [other wrong options] [Discuss in forum] pituitary glands thyroid glands pancreas |
Q73 ⇒ Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by Robert Brown [other wrong options] [Discuss in forum] Robert Hooke Rudolf Virchow Theodore Schwann |
Q74 ⇒ Neurospora is used as genetic material because it has short life cycle of 10 days [other wrong options] [Discuss in forum] the product of single meiosis can be easily analysed meiotic products are linearly arranged in the form of ordered tetrads is a diploid fungus |
Q75 ⇒ Mycobacterium lepraeCorynebacterium diphtheriaVibrio comma cholera [other wrong options] [Discuss in forum] tetanus influenza typhoid |
Q76 ⇒ Plants absorb most part of water needed by them through their root hairs [other wrong options] [Discuss in forum] embryonic zone growing point zone of elongation |
Q77 ⇒ Plants are killed in winter by frost because of desiccation and mechanical damage to the tissues [other wrong options] [Discuss in forum] because no photosynthesis takes place at such low temperature because respiration ceases at such low temperature because there is no transpiration |
Q78 ⇒ Movement of cell against concentration gradient is called active transport [other wrong options] [Discuss in forum] osmosis diffusion passive transport |
Q79 ⇒ Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement? The flow of solution is not possible through semi permeable membrane [other wrong options] [Discuss in forum] Exact concentration of solution is not given Character of semi permeable membrane is not given All are incorrect |
Q80 ⇒ Plants developing in dry conditions are xerophytes [other wrong options] [Discuss in forum] mesophytes lithophytes hydrophytes |
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