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How do flies and other insects walk up walls without falling? ...
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Is there any open circulatory system in the human body? ...
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Organisms without nucleus and cell organelles belong to (i) fungi (ii) protista (iii) cyanobacteria (iv) archaebacteria (a) (i) and (ii) (b) (iii) and (iv) (c) (i) and (iv) (d) (ii) and (iii) ...
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Meena and Hari observed and animal in their garden. Hari called it an insect while Meena said it was an earthworm. Choose the character from the following which confirms that it is an insect. (a) body rounded (b) body with jo ...
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Which of the following pairs belong to the category of cold blooded animals? (a) snakes and birds (b) bats and rats (c) frog and snakes (d) birds and monkey ...
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The presence of feathers and power of flight are the characteristic features of (a) mammalia (b) reptilia (c) aves (d) amphibia ...
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When there are itchy, red, raised, scaly patches that may blister and ooze and look like a ring, what is the disease called and among bacteria, virus and fungi what is the causative agent? ...
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A characteristic feature of cardiac muscle is its (a) fatigue (b) rhythmicity (c) spindle shape (d) all of the above ...
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For each characteristic given below, name the corresponding phylum: (a) body segmented and jointed legs, with compound eyes (b) body having calcareous shell and ventral foot (c) spiny skinned organisms ...
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Which of the following pairs of diseases is caused by virus? (a) rabies, mumps (b) cholera, tuberculosis (c) typhoid, tetanus (d) AIDS, syphilis ...
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Choose the wrong statement (a) the nature of matrix differs according to the function of the tissue (b) fats are stored below the skin and in between the internal organs (c) epithelial tissues have large intercellular spaces ...
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Which of the following remains absent in prokaryotes? (a) nuclear membrane (b) ribosome (c) cell wall (d) cell membrane ...
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The information given below refers to the hormone (i) secreted by endocrine glands located on top of kidneys (ii) converts glycogen into glucose (iii) helps the body to adjust to stress (a) adrenaline (b) insulin (c) progeste ...
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'Lock jaw' is another name of: (a) malaria (b) kala-azar (c) tetanus (d) diptheria ...
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Water reabsorption mainly occurs through (a) Bowman's capsule (b) Proximal convoluted tubule (c) Loop of Henle (d) Distal convoluted tubule and collecting tubules ...
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Coronary artery disease is caused by deposits of (a) potassium (b) calcium (c) sodium (d) none of these ...
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The reason why some mutations, which are harmful, do not get eliminated from the gene pool is that (a) they are recessive and carried by heterozygous individuals (b) they are dominant and show up more frequently (c) genetic d ...
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What is the primary source of nitrogen oxides? (a) burning coal (b) burning wood (c) burning fossil fuels (d) industries ...
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A married young man of 25 years is not having a child. The possible reason for this is (a) lack of testosterone (b) lack of progesterone (c) excess of progesterone (d) excess activity of pituitary gland ...
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Fossil 'X' can be considered to have evolved earlier than fossil 'Y' if fossil (a) 'Y' has vestigial structures that are homologous to functional structures in fossil 'X'. (b) 'Y' is structurally more complex than fossil 'X'. ...
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Give two examples of each of the following and their specific usefulness in the body: (i) monosaccharides (ii) disaccharides (iii) polysaccharides ...
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Golden brown algae are called: Diatoms (2) Volvox (3) Ectocarpus (4) Polysiphonia ...
