3.Which one of the following is not a characteristic feature of bryophytes?
Anonymous Quiz
11%
Dominant gametophytic generation
8%
Filamentous rhizoids
7%
Amphibious habitat
74%
Vascular tissues
In mosses gametophyte has two stages. What are these stages? aare
Anonymous Quiz
6%
First stage is sporogonium phase and second is-protonema.
89%
First stage is protonema and the second is leafy
4%
First stage is gemmae formation and second is meiosis
1%
First stage is zygote and second is spore mother cell
Sex organs in pteridophytes are formed on the
Anonymous Quiz
31%
Multicellular well-developed sporophyte.
10%
Unicellular main gametophyte of the plant.
37%
Photosynthetic, free living gametophyte
22%
Gametophyte which is nutritionally dependent on sporophyte.
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Identify the correct statement regarding a spontaneous process
Anonymous Quiz
62%
For a spontaneous process in an isolated system, the change in entropy is positive
7%
Endothermic processes are never spontaneous
22%
Exothermic process are always spontaneous
9%
Lowering of energy in the reaction process is the only criterion for spontaneity
The entropy of crystalline substances at absolute zero going by the third law of thermodynamics should be taken as
Anonymous Quiz
3%
100
6%
50
81%
Zero
10%
Different for different substances
Which one of the following is always not negative
Anonymous Quiz
19%
Enthalpy of combustion
41%
Enthalpy of formation
19%
Enthalpy of neutralisation
22%
Hydration Enthalpy
The positive value of ∆S indicates that
Anonymous Quiz
12%
The system becomes less disordered
70%
The system becomes more disordered
9%
The system is in equilibrium position
9%
The system tends to reach at equilibrium position
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1. In majority of dicotyledonous plants, the direct elongation of the_______ leads
Anonymous Quiz
8%
Cotyledon
16%
Secondary root
23%
Plumule
54%
Radicle
Adventitious roots are found in
Anonymous Quiz
7%
Mustard
8%
Turnip
60%
Monstera
25%
All dicot plants
Adventitious roots develop from
Anonymous Quiz
9%
Radical
3%
Embryo
86%
Any plant part other than radical
2%
Plumule
Root hairs develop from the region of
Anonymous Quiz
78%
Maturation
8%
Elongation
6%
Root cap
7%
Meristematic activity
Prop roots are hanging structures found in
Anonymous Quiz
9%
Rhizophora
85%
Banyan tree
5%
Sugarcane
1%
Maize
In any chemical reaction, equilibrium is supposed to be established when
Anonymous Quiz
5%
Mutual opposite reactions undergo
55%
Concentration of reactants and resulting products are equal
37%
Velocity of mutual reactions become equal
3%
The temperature of mutual opposite reactions become equal
In a chemical equilibrium A + B ⇌ C + D, when one mole each of the two reactants are mixed,
0.6 mole each of the products are formed. The equilibrium constant calculated is
0.6 mole each of the products are formed. The equilibrium constant calculated is
Anonymous Quiz
9%
1 N
41%
0.36
47%
2.25
3%
4/9