31
Perhaps the most characterstic arctic tundra plant is
A)
Cladonia
B)
Funaria
C)
Anthoceros
D)
Venda
Answer & Solution
Answer: Option
A
32
According to Raunkier, desert communities are dominated by
A)
Phanerophytes and hemicryptophytes
B)
Nanophanerophytes and chamaephytes
C)
Threophytes and geophytes
D)
Phanerophytes and chamaephytes
Answer & Solution
Answer: Option
B
33
Leaves of temperate deciduous woody trees may senesce and fall at a certain season of the year. Such a senescence of leaves or plant organs is called
A)
Sequential senescence
B)
Synchronous senescence
C)
Shoot senescence
D)
Monocarpic senescence
Answer & Solution
Answer: Option
B
34
In which of the following, the pollens of each anther lobe form a characteristic mass called pollinium?
A)
Anona
B)
Elodea
C)
Typha
D)
Calotropis
Answer & Solution
Answer: Option
D
35
There is evidence that bound gibberellins exist in plant tissues as
A)
Gibberellin oxides
B)
Gibberellin precursors
C)
Gibberellin glycosides
D)
Kaurene
Answer & Solution
Answer: Option
C
36
Chlorophyll 'a' directly takes part in photochemical reaction and hence it is termed as
A)
Accessory pigment
B)
Photosynthetic unit
C)
Primary photosynthetic pigment
D)
Secondary photosynthetic pigment
Answer & Solution
Answer: Option
C
37
Match
List-I (Pathologists) with
List-II (Statements) and select the correct answer:
List-I List-II
a. De Bary (1876)
1. The fungus Phytophthora infestans overwinters in the soil
b. Melhus (1915)
2. Confirmed De Bary's observations
c. De Bruyn (1926)
3. In temperate regions Phytophthora irfestans perennates in soil in the form of sporangia and germ tubes
d. Kaung (1956)
4. The mycelium of Phytophthora infestans overwinters in the infected tubers
A)
a-1, b-2, c-4, d-3
B)
a-3, b-4, c-2, d-1
C)
a-4, b-2, c-1, d-3
D)
a-4, b-3, c-2, d-1
Answer & Solution
Answer: Option
C
38
Match
List-I (Epiphyte types) with
List-II (Modes of life) and select the correct answer:
List-I List-II
a. Proto-epiphytes
1. Those that collect moist humus within large interwoven mass of roots
b. Hemi-epiphytes
2. Those whose leaves do the function of roots and absorb water and nutrient salts
c. Nest-epiphytes
3. Those that find their nutrients in the cortex of their support
d. Tank-epiphytes
4. Those that send their aerial roots into soil
A)
a-1, b-2, c-3, d-4
B)
a-3, b-2, c-4, d-1
C)
a-2, b-3, c-1, d-4
D)
a-3, b-4, c-1, d-2
Answer & Solution
Answer: Option
D
39
The principal function of photosystem I is the simultaneous generation of
A)
A strong reductant and a strong oxidant
B)
A weak reductant and a strong oxidant
C)
A strong reductant and a weak oxidant
D)
A weak reductant and a weak oxidant
Answer & Solution
Answer: Option
C
40
Match
List-I with
List-II and select the correct answer:
List-I (Reactions) List-II (Enzymes)
a. L-Alanine ⇄ D-Alanine
1. Cis-Trans Isomerase
b. Methyl Malonyl - CoA ⇄ Succinyl - CoA
2. Racemase
c. 3-phosphogly-ceraldehyde ⇄ Dihydroxyacetone-phosphate
3. Intramolecular Transferases
d. All-trans retinene ⇄ All-cis retinene
4. Intramolecular Ketol isomerases
A)
a-1, b-3, c-2, d-4
B)
a-2, b-4, c-3, d-1
C)
a-2, b-3, c-4, d-1
D)
a-1, b-3, c-4, d-2
Answer & Solution
Answer: Option
C
