Pick out the correct statements.
(a) Cytokinins specially help in delaying senescence
(b) Auxins are involved in regulating apical dominance
(c) Ethylene is especially useful in enhancing seed
germination
(d) Gibberellins are responsible for immature falling
of leaves
(a) and (c) only
(a) and (d) only
(b) and (c) only
(a) and (b) only
(b) and (d) only
/
(a)-3, (b)-1, (c)- 5 , (d)- 4, (e)-2
(a)-4, (b)-5, (c)- 1, (d)- 3, e-2
(a)-2, (b)-1, (c)- 5 , (d)- 3, (e)-4
(a)-3, (b)-1, (c)- 5 , (d)- 2, (e)-4
(a)-4, (b)-1, (c)- 5 , (d)- 3, (e)-2
/
a-3, b-1, c-5, d-4, e-2
a-4, b-5, c-1, d-3, e-2
a-2, b-1, c-5, d-3, e-4
a-3, b-1, c-5, d-2, e-4
a-4, b-1, c-5, d-3, e-2
Match the following with correct option.
(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
(a) - (i) (b) - (iii), (c) - (ii), (d) - (iv)
(a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
(a)-(iv), (b)-(ii), (c)-(iii), (d)- (i)
The change in population size at a given time interval t, is given by the expression,N1 = N0 +B+I-D-E I, B and D stand respectively for
Rate of immigration, mortality rate, natality rate
Rate of emigration, natality rate, mortality rate
Mortality rate, natality rate, rate of immigration
Mortality rate, rate of immigration, natality rate
Rate of immigration, natality rate, mortality rate
The amount of freshwater of the earth frozen as polar or glacial ice is
0.5%
0.02%
0.01%
1.97%
2.5%
One hormone helps in ripening of fruits while the other stimulates closure of stomata. These are respectively
abscisic acid and auxin
ethylene and abscisic acid
abscisic acid and ethylene
ethylene and gibberellic acid
gibberellic acid and abscisic acid
Choose the mis-matched option
Wind-Cannabis-Anemophily
Water-Zoostera- Hydrophily
Insects–Salvia-Entomophily
Birds-Adansonia-Ornithophily
Bats-Kigelia-Chiropterphily
Find the correct order of endosperm type
Cellular, helobial, free nuclear
Cellular, free nuclear, helobial
Helobial, free nuclear, cellular
Free nuclear, cellular, helobial
Free nuclear, helobial, cellular
In which of the following reaction of glycolysis, a molecule of water is removed from the substrate?
Fruclose-6-phosphate —> Fructose 1,6-bisphosphate
3-phosphateglyceraldehyde ( 1-3 biphosphoglyceric acid
PEP -> Pyruvic acid
2-phosphoglycerate -> PEP
Glucose —1- glucose 6-phosphate
Choose the correct combination of labeling the molecules involved in the pathway in anaerobic respiration in yeast
(a) Ethanol (b) CO2 (c) Acetaldehyde
(a) CO2 (b) Ethanol (c) Acetaldehyde
(a) CO2 (b) Acetaldehyde (c) Ethanol
(a) Acetaldehyde (b) CO2 (c) Ethanol
(a) Ethanol (b) Acetaldehyde (c) CO2
Match the number of carbon atoms given in List I with that of the compounds given in List II and select the correct option
List I List II
a) 4.C. Compound. 1. AcetylCoA
b) 2.C. Compound 2. Pyruvate
c) 5.C. Compound 3. Citric acid
d) 3.C. Compound 4. ?-ketoglutaric acid
5. Malic acid
a-2, b-5, c-3, d-1
a -3, b-1, c-4, d-2
a-5, b-1, c-4, d-2
a-5, b-3, c-1, d-2
a-3, b-4, c-1, d-5
If R.Q. is less than 1.0 in a respiratory metabolism, it would mean that
Carbohydrates are used as respiratory substrate
Organic acids are used as respiratory substrate
The oxidation of the respiratory substrate consumed more oxygen than the amount of CO2 released
The oxidation of the respiratory substrate consumed less oxygen than the amount of CO2 released
The reaction is anaerobic
Which of the following statements with regard to photosynthesis is / are correct?
(a) In C4 plants, the primary CO2 acceptor is PEP
(b) In the photosynthetic process PS II absorbs energy at or just below 68O nm
(c) The pigment that is present in the pigment system I is P683
(b) and (c) only
(a) only
(c) only
(a) and (b) only
(a) and (c) only
Consider the following statements
a) The portion of the spectrum between 500 mn and 800 nm is also referred to as photosynthetically active radiation (PAR)
b) Magnesium, calcium and chloride ions play prominent roles in the photolysis of water
c) In cyclic photophosphorylation, oxygen is not released (as there is no photolysis of water)' and NADPH is also not produced
Of these statements given above
(a) is true; but (b) and (c) are false
(a) and (b) are false; but (c) is true
(c) (b) is true; but (a) and (c) are false
(a) and (b) are true; but (c) is false
(a) and (c) .ire true; but (b) is false
Which of the following three organelles are involved in photorespiration?
Chloroplast, Mitochondrion, Glyoxysome
Chloroplast, Peroxisome, Mitochondrion
Chloroplast, Lysosome, Peroxisome
Chloroplast, Lysosome, Glyoxysome
Chloroplast, Glyoxysome, Mitochondrion
Match the following mineral element with their deficiency symptoms and choose correct option
a-3, b-1, c-5, d-2, e-4
a-1, b-4, c-5, d-3, e-2
a-3. b-4, c-5, d-1, e-2
a-2, b-3, c-4, d-1, e-5
a-4 b-2, c-1, d-3, e-5
/
(b), (c) and (e) only
(b), (c) and (d) only
(a), (b) and (c) only
(b) and (c) only
(a) and (e) only
Path of water movement from soil to xylem is
Soil —> Root hair —> Cortex —> Pericycle —> Endodermis —> Metaxylem —> Protoxylem
Soil—> Root hair—> Cortex —> Endodermis ---> Pericycle —> Protoxylem —>Metaxylem
Soil —> Root hair —> Epidermis —> Endodermis —> Phloem —> Xylem
Soil Root hair—> Epidermis -( Cortex Phloem -> Xylem
Soil— > Root hair—> Cortex—>Protoxylem Phloem—> Metaxylem
Pick out the correct statements
(a) Mitosis takes place in the somatic cells and
meiosis takes place in the germ cells
(b) During mitosis, the DNA replicates once for one
Cell division and in meiosis the DNA replicates
twice for two cell divisions
(c) Mitosis and meiosis occur both in sexually and
asexually reproducing organisms
a only
b only
c only
a and b only
b and c only
All example of feedback inhibition is
Cyanide action on cytochrome
Sulpha drug on folic acid synthesizer bacteria
Allosteric inhibition hexokinase by glucose 6-phosphate
Reaction between succinic dehydrogenase and succinate
The inhibition of succinic dehydrogenase by malonate-
Pathogenicity of bacteria causing tuberculosis and leprosy is due to
Cholesterol
Ergosterol
Prostaglandins
Glycerol
Wax-D
Read the following Statements and identify the correct options given.
(a) Sap vacuoles - contain digestive enzymes with
the help of which nutrients are digested
(b) Contractile vacuoles - take part in
osmoregulation and excretion
(c) Food vacuoles - store and concentrate mineral
salts as well as nutrients
(d) Air vacuoles - store metabolic gases and help in
buoyancy of cells
(a) and (b) are correct
(a) and (c) are correct
(a) and (d) are correct
(b) and (d) are correct
(b) and (c) are correct
/
a-5, b-3, c-1, d-4, e-2
a-5, b-3, c-2, d-4, e-1
a-2. b-3, c-1, d-4, e-5
a-4, b-3, c-1, d-5, e-2
a-3 b-5, c-1, d-4, e-2
Which one of the following is not characteristic of Gram-positive bacteria?
Cell wall is smooth
Mesosomes are distinctively prominent
Basal body of flagellum contains 2 rings
Outer membrane is present\
Murein content of cell wall is 70 – 80%
The method developed by Matthew Meselson and Franklin Stahl to separate heavy DNA with 15N from DNA with 14N, for providing evidence for semi-conservative replication of DNA is
Ion exchange chromatography
Density gradient centrifugation
Buoyant density centrifugation
Gel Filtration
Isopycnic ccntrifugation
/
(c) and (d) only
(b) and (d) only
(c) and (e) only.
(c), (d) and (e) only
(a), (b) and (d) only
The vascular cambial ring of a dicot stem is
primary in origin
secondary in origin
embryonic in origin
tertiary in origin
partly primary and partly secondary in origin
/
a-2, b-3, c-4, d-l
a-l, b-2, c-3, d-4
a-3. b-4, c-2, d-l
a-4, b-3, c-2, d-l
a-3 b-l, c-4, d-2
Family Podostemonaceae is placed under the Series
Multiovulate aquaticae
Microembryeae
Daphnales
Unisexuales
Heteromerae