1) Water potential difference existed in tall trees would be :
a)1.3 M Pa b)2.5 M Pa c)4 M Pa d)more than 4 M Pa.
2) The entry of water into guard cells is called :
a)endosmosis b)exosmosis c)plasmolysis d)none.
3) The movement of stomatal opening in succulents is :
a)photoactive b)scotoactive c)both d)none.
4) Water potential of the cell is equal to its osmotic potential ,when the cell is
placed in :
a)hypertonic solution b)isotonic solution c)both d)none.
5) Cells which do not show plasmolysis are :
a)epidermis b)cortex c)pericycle d)endodermis .
6) An example of pressure driven process :
a)bulk flow b)diffusion c)imbibition d)osmosis.
7) Root pressure can be measured by :
a)potometer b)manometer c)calorimeter d)none .
8) Root pressure can be usful for ascent of sap in :
a)herbs b)shrubs c)trees d)none .
9) Nitrogen is structural component of :
a)Auxins & Gibberellins b)Gibberellins &Cytokinins c)Cytokinins & Auxins d)none.
10) Purple colour of plant parts in tomato plant are due to the deficiency of :
a)nitrogen b)phosphorus c)potassium d)none.
11) Fruits and seeds are rich source of :
a)Nitrogen b)phosphorus c)Potassium d)none.
12) Lodging results due to the deficiency of :
a)N b)P c)K d)both a&b13) Precursors of enzymes are called :
a)zymogens b)amino acids c)nucleic acids d)none.
14) Cytochrome oxidase is an example of :
a)zymogen b)isoenzyme c)metalloenzyme d)none.
15) The process of separation of apoenzyme from coenzyme is called :
a)Dialysis b)oxidation c)reduction d)none.
16) Source of Co2 released during Photorespiration is :
a)Glycine b)Serine c)both d)none.
17) Photorespiration is not detectable in :
a)C3 plants b)C4 plants c)both d)none.
18) Number of cofactors required in the conversion of Pyruvic acid into
Acetyl co-enzyme A is:
a)5 b)4 c)3 d)2.
19) Substrate level Phosphorylation involves in the formation of :
a)ADP b)ATP c)NADPH d)none.
20) Key compound forming connecting link between Glycolysis and
21) Intermediate substance formed during Krebs cycle ,serving as substrate
for aminoacid synthesis is :
a)Succinyl CoA b)alfa keto glutaric acid c)Acetyl CoA d)none.
22) During electron transport,how many ATP molecules are for every FADH2 oxidised:
a)1 b)1 c)3 d)4.
23) Non leguminous plant with root nodules found in :
a)Casuarins b)Alnus c)Psychotria d)a&b.
24) In Azolla Anabaena is found in :
a)roots b)stems c)leaves d)all.
25) In Psychotria,nodules are formed in :
a)root b)leaf c)a&b d)none.
26) Growth hormone inducing nodule from the cortical cells division is :
a)IAA b)GA c)Cytokinin d)ABA.
27) Leghaemoglobin is a red pigment present in root nodules of :
a)legume plants b)biennials c)cereal plants d)mustard plants.
28) Amino acid coded by six different triplet codes :
a)Arginine b)Serine c)Leucine d)a&b&c.
29) UAA,UAG,UGA are called :
a)codons b)terminating codons c)a&b d)none.
30) Enzyme catalysing transcription is :
a)RNA polymerase b)DNA polymerase c)ligase d)endonuclease.
31) Activated amino acid is attached to the tRNA at :
a)anticodon end b)codon end c)CCA end d)none.
32) Naturally occuring Auxin in plants is :
a)IAA b)IBA c)NAA d)2,4-D.
33) Element required for the synthesis of IAA is :
a)copper b)iron c)zinc d)sulpher.
34) Amino acid concerned in the synthesis of IAA is :
a)arginine b)leucine c)tryptophan d)serine.
35) Higher concentration of auxin favours the formation of more flowers of :
a)male b)female c)bisexual d)sterile.
36) Sudden increase in shoot length from stunted growth is called :
a)bolting b)rosette c)bakanae d)none.
37) Naturally occuring Cytokinin is :
a)zeatin b)kinetin c)benzylamino purine d)none. 46) The process of plant observed under the influence of daylength condition is
the formation of :
a)root b)stem c)flowering d)none.
47) An example of short day plant is :
a)Beeta vulgaris b)soyabean c)maize d)none. 38) Cytokinins are rich in the tissues of :
a)embryo b)cotyledons c)endosperm d)seed coat.
39) Phytohormones helpin opening of stomata are :
a)auxins b)gibberellins c)cytokinins d)ABA.
40) Phytohormone absent in bacteria is :
a)auxin b)cytokinin c)ABA d)GA.
41) Accumulation of which phytohormone causes closure of stomata :
a)auxin b)gibberellin c)cytokinin d)ABA.
42) Phytohormone inducing senescence is :
a)ABA b)IAA c)IBA d)2,4-D.
43) Phytohormone present in most of the plant parts is :
a)ABA b)auxins c)cytokinins d)ethylene.
44) The common fruit ripening hormone is :
a)ethylene b)ABA c)auxin d)gibberellin.
45) "Triple Response Growth " is induced by :
a)ABA b)auxin c)ethylene d)GA.
46) The process of plant under the influence of day length condition is:
a)formation of root b) formation of stem c)flowering d)none.
47) An example of short day plant is :
a) Beta vulgaris b)soya bean c)Maize d)none.
48) Cucumber is a :
a)short day plant b)long day plant c)day neutral plant d)none.
49) Night break effect influences :
a)flowering b)rooting c)many leaves d)none.
50) The leaf containg pigment responcible for flowering in photoperiodism is :
a)chlorophyll b)xanthophyll c)phytochrome d)carotene .
51) Enzyme synthesised in the storage tissue during seed germination is :
a)lipase b)amylase & protease c)a & b d)none.
52) The range of temperature optimum for seed germination in plants is :
a)5c-10c b)15c-25c c)15c-30c d)above 45c.
53) Light inhibiting seed germination is found in :
a)Nicotiana b)Viscum c)Allium cepa d)Orchids.
54) In Malvaceae seed coats are impermeable to :
a)water b)oxygen c)carbon dioxide d)none.
55) Seeds of Capsela bursa pastoris,readily germinate only when exposed to light.
Such seeds are called :
a)photoblastic b)+ly photoblastic c)-ly photoblastic d)none.
56) Softening of hard seed coat is called :
a)Stratification b)scarification c)blasting d)none.
57) Stratification is ;
a)rupturing the seed coat b)boiling the seed c)chilling treatment of seeds
d)alternating the temperature.
58) One of the following is germination inhibitor :
a)Foli acid b)Ferric acid c)Ferulic acid d)Fumaric acid.
KEY.

1 2 3 4 5 6 7 8 9 10 11 12
d a b b d a b a c a b c

13 14 15 16 17 18 19 20 21 22 23
a c a a b a b b b b d

24 25 26 27 28 29 30 31 32
c b a a d c a c a

33 34 35 36 37 38 39 40 41
c c b a a a c c d

42 43 44 45 46 47 48 49 50 a d a c c b c a c

51 52 53 54 55 56 57 58

c c c a b b c c