A metal ion involved in stomatal regulation is
Options
(a) iron (b) potassium (c) zinc (d) magnesium
Correct Answer:
potassium
Explanation:
Stomata are small pores in plant epidermis,present in large numbers,particularly in leaves,through […]
The first step in dark reaction of photosynthesis is
Options
(a) formation of ATP (b) ionization of water (c) attachment of CO₂ to a pentose sugar (d) excitement of electron of chlorophyll by […]
Which of the following is the first step of glycolysis?
Options
(a) breakdown of glucose (b) phosphorylation of glucose (c) conversion of glucose into fructose (d) dehydrogenation of glucose
Correct Answer:
conversion of […]
Which one of the following is the first step of glycolysis?
Options
(a) breakdown of glucose (b) phosphorylation of glucose (c) conversion of glucose into fructose (d) dehydration of glucose
Correct Answer:
phosphorylation […]
Rarely among angiosperms the pollen grain develops in embryo sac. This abnormally is called as
Options
(a) metaxenia (b) nemec phenomenon (c) xenia (d) mesogamy
Correct Answer:
xenia
Explanation:
No explanation available. Be […]
Thyroid deficiency in childhood leads to
Options
(a) hypothyroidism (b) myxoedema (c) cretinism (d) thyrotoxicosis
Correct Answer:
cretinism
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Which of the following is a metalloid
Options
(a) C (b) Si (c) Ge (d) Sn
Correct Answer:
Ge
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Alum in dyeing of clothes is used as
Options
(a) bleaching agent (b) fire proof material (c) mordant of colour (d) diluent
Correct Answer:
mordant of colour
Explanation:
Alums are the double salts […]
Term ‘Hexadecane’ in petroleum is commonly called as
Options
(a) octane (b) petrol (c) cetane (d) LPG
Correct Answer:
cetane
Explanation:
No explanation available. Be the first to write the explanation for this […]
Propanone and propanal are …. Isomers
Options
(a) geometrical (b) optical (c) functional (d) none of these
Correct Answer:
functional
Explanation:
Compounds having the same molecular formula but different functional groups are called […]
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