Biology-Objective Related Question Answers
901. Prothrombin which helps in clotting of blood is released by?
blood platelets
902. Myopia is connected with?
eyes
903. Most of the red; blue and purple colours of plants are due to a pigment called?
anthocyanin
904. Plants developing in dry conditions are?
xerophytes
905. Plants growing on sand are called as?
psammophytes
906. Our skin; when exposed to excess sunlight; becomes dark. This is because our skin pigments called?
melanin
907. Ramapithecus and Cro-Magnon man are considered?
ancestors of modern man
908. Normal adult human male has?
14 gram of haemoglobin/100 gram of blood
909. Plants wilt due to excess of?
transpiration
910. Monotremes are unique mammals because they?
lay eggs
911. Poison glands of snakes are homologous to?
salivary glands of vertebrates
912. Radical vascular bundles are those in which?
xylem and phloem occur on the different radii
913. Plant bends towards the source of light on account of the movement of curvature known as?
phototropism
914. Plant have ____ while animals lack it.?
cellulose
915. 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
916. Photosynthesis is a process?
reductive; endergonic and anabolic
917. Pigmentation of skin is due to?
melanocytes
918. Norepinephrine increases?
blood pressure
919. Night blindness is cause by lack of which vitamin?
Vitamin A
920. Monocot root differs from dicot root in having?
well developed pith
921. Radioactivity is a phenomenon of the spontaneous emission of?
All of the above
922. Organic Substances which; in very small amounts; control growth and development called?
hormones
923. Our major foods; fibres; spices; fruits and beverage crops are?
flowering plants
924. Movements due to light are shown by?
flowering plants
925. Outer covering of virus made up of protein is?
capsid
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