Botany
1. The type of compound leaves in Coriander is:
A) Unipinnate B)
Bipinnate C)
Tripinnate D)
Decompound
2. In Australian Acacia,
the leaves are modified into:
A) Cladodes B)
Phylloclades C) Phyllodes D) Tendrils
3. Raceme of Racemes is also termed as:
A) Umbel B) Spadix C)
Panicle D)
Corymb
4. The inflorescence in Euphorbia
species is:
A) Verticillaster B)
Cyathium C)
Cymose head D) Capitulum
5. Censer mechanism for dispersal of seeds occur in:
A) Poppy B) Calotropis C) Sonchus D) Albizzia
6. The pericarp is not differentiated into epicarp, mesocarp and
endocarp in:
A) Berries B) Drupes C)
Pomes D)
Coconut
7. The example of leaf opposed stem
tendrils is:
A) Cucurbita B) Grape-vine C)
Passiflora D) Antigonon
8. Katha is extracted from _______ of khair (Acacia catechu).
A) Bark B)
Leaves C)
Heartwood D) Sapwood
9. Pollinia are present in the flowers of:
A) Sonchus B)
Ageratum C) Calotropis D) Antirrhinum
10. Which plant family store essential oils in oil cells?
A) Zingiberaceae B) Apiaceae C)
Myrtaceae D)
Lamiaceae
11. The nature of crop grain is:
A) Aerodynamic B) Hygroscopic C) Wet and dry D) Humid
12. The quality of coffee mainly depends upon:
A) Harvesting B)
Processing
C) Physiological maturity D)
Ripening
13. The literal meaning of word ‘Locust’ is:
A) Location B)
Area C)
Pests D)
Plague
14. Leaf roots are found in:
A) Sarsinia
B)
Rhynia C) Salvinia D)
Puccinia
15. A dew drop at the tip of tomato leaves on cool night is formed
due to:
A) Atmospheric water
B) Evaporation of water from stomata
C)
Secretion of water from hydathodes
D) Excessive water absorption at the root tips
16. Stone cells are also known as:
A) Brachysclereids B)
Osteosclereids C)
Macroschereids D) Trichoblasts
17. The amount of energy required to raise
the temperature of a unit mass of a substance by 1oC is called its:
A) Latent heat B)
Heat of vaporization
C) Specific heat D)
Endothermic energy
18. In ribose moiety of a ribonucleoside,
phoshorylation is possible only at __________ position/s in the furanose ring
formation.
A) One (C5’) B)
Two (C1’, C4’)
C) Three (C2’, C3’ C5’) D)
Five (C1’, C2’, C3’ C4’, C5’)
19. The rate of breakdown of carbohydrates
_________ by a shift from anaerobic to aerobic condition.
A) Increases B)
Decreases C)
Doubles D)
No change
20. The conversion of pyruvic acid to acetyl CoA is called:
A) Fermentation B)
Glycolysis
C) Decarboxylation D)
Anaerobic respiration
21. The amount of water retained by soil after the drainage of
gravitational water is:
|
A) Field capacity
|
B) Absorption capacity
|
|
C) Drainage capacity
22. The value of water potential of pure water
is:
|
D) Capillary water
|
|
A) Zero B)
0.987 atm
|
C) 106 dynes
m2 D) 108 dynes m2
|
23. Ammonia poisoning occurs in temperature sensitive plants at:
A) Low temperature B)
High temperature
C) Moderate temperature D)
Low light intensity
(2)
24. Opening and closing of flowers represents a kind of:
A) Autonomic movement B)
Nutation
C) Tropic movement D)
Nastic
movement
25. The scutellum of grass embryo is:
A) Photosynthetic organ B)
Absorption
organ
C) Reserve food storage organ D)
Vestigeal organ
26. Albuminous seeds are characterized by having:
A)
Endosperm but absence of thick
cotyledons
B) Thick cotyledons but lack of thick endosperm
C) Thick endosperm and thick cotyledons
D) Cotyledons but lack of endosperm
27. Which of the following in higher concentration favours growth of
paddy crops?
A) Auxin B)
GA C)
ABA D) Ethylene
28. In the respiratory chain of electron
transport, which one of the following is the terminal cytochrome that reacts
with oxygen?
A) Cytochrome b B)
Cytochrome b6
C) Cytochrome a D)
Cytochrome
a3
29. Inhibition of enzyme cytochrome oxidase is an example of:
A) Competitive inhibition B) Non-competitive
inhibition
C) Feedback inhibition D)
Zymogen
30. Path of sugar
translocation in dicot plants can be demonstrated by:
A) Girdling B)
Grafting C) Defoliolation D) Root pressure
31. Which of the following are
important for nitrogen fixation?
A) Calcium and potassium B)
Sodium and phosphorus C) Magnesium and boron D) Iron and molybdenum
32. Statocysts are:
A) Air-cells B)
Chlorophyll cells
C) Fibre-cells D)
Sensory
cells
33. The most efficient
precursor of ethylene is:
A) Adenine B)
Thiocarbonate C) Zeatin D)
Methionine
(3)
34. Deficiency of oxygen
during mitosis:
A) Shortens the cycle period B)
Extends the cycle period
C) Has no effect on the process D)
Cause polyploidy
35. Tomato fruit becomes red
due to:
A) Anthocyanin B)
Lycopen C)
Carotin D)
Xanthophyll
36. Carbon cycle involes
A) Helium and Hydrogen B)
Hydrogen and oxygen
C) Carbon and carbon
dioxide D)
Oxygen and water
37. Volicitin molecule plays
role in:
A) Defense B)
Tritrophic interactions
C) Plant reproduction D)
Allelopathy
38. Reactive oxygen species
are NOT found in:
A) Mitochondria B)
Peroxisome
C) Chloroplast D)
Ribosomes
39. The pressure of water
vapours nearly ______ for each 10 oC rise in temperature.
A) Equals B) Doubles C)
Triples D) Reduces to half
40. Genetic diversity refers
to:
A) Intra and inter-specific variations B)
Intra and inter-generic variations
C) Intra and inter-varietal variations D) Intra and inter-ordeal
variations
41. Cryogenenic storage of
germplasm is done at:
A) -4oC B)
-100oC C)
-196oC D)
-273oC
42. The first transgenic plant
developed for phytoremediation purposes was:
A) Brassica napus B) Nicotiana tabaccum C) Arabidopsis
thaliana
D) Liriodendron tullpifera
43. The gene which suppresses
the action of a gene at other locus is called:
A) Lethal B) Penetrance C) Pleiotropic D) Epistatic
44. The length of cobs in
maize is determined by:
A) Single gene B)
One pair of genes
C) Two pairs of genes D)
Environmental factors
(4)
45. The starting point in the production of
genetically superior seeds of a tree species is the selection of:
A) Multipurpose Tree Species (MPTS) B)
Candidate
Plus Trees (CPT)
C) High Yielding Trees (HYT) D) Early Maturing Trees (EMT)
46. Maximum exploitation of heterosis in
crop plants is possible only through production of ________ with high degree of
heterozygosity.
A) Sexually reproduced seeds B)
F1
hybrids
C) Bud propagules D)
Protoplast culture
47. Thermus aquaticus is a source of:
A) Taq polymerase
B)
Vent polymerase
C) Both A and B D)
Primase enzyme
48. Which
cellular organelle is involved in the initiation of intrinsic pathway of
apoptosis?
A) Endoplasmic reticulum B) Lysosomes
C) Mitochondria D)
Peroxisomes
49. Which one of the following ions plays an important role in
growth of pollen tube?
A) Calcium B)
Chlorine C)
Magnesium D) Sulphate
50. Which of the following
gene is associated with cold stress tolerance in plants?
A) FAD7 B)
FEP2 C)
BADH D)
BjP15
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