MCQ
Full form of $PPLO$
- APleuro Pneumonia Long Organisms
- ✓Pleuro Pneumonia Like Organisms
- CPleuro Positive like Organisms
- DPleuro Pneumonia like Organ
✓
Answer
Correct option: B.
Pleuro Pneumonia Like Organisms
b
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Examine the figure given below and select the correct option giving all the four parts $(A, B, C$ and $D) $ rightly identified.
→$A$ : Corm grows vertically beneath soil surface.
→$R$ : It bears nodes, internodes, buds & green leaves.
The Frogs and Humans are respectively:
Mark the given statements True (T) or False (F).
(i) Joseph Priestley in 1770 performed a series of experiments that revealed the essential role of air in the growth of green plants.
(ii) O2 evolved by the sulphur bacteria comes from H2O.
(iii) The mesophyll cells in the leaves have a large numbers of chloroplasts.
(iv) The membrane system is responsible for trapping the light energy and also for the synthesis of ATP and NADPH in chloroplast.
(v) The wavelength at which there is minimum absorption by chlorophyll-a, i.e. in the blue and red region shows higher rate of photosynthesis.
(vi) Chlorophyll a is the chief pigment associated with photosynthesis.
(vii) Thylakoid pigments like chlorophyll b. xanthophylls and carotenoids are accessory pigments that absorb light and transfer the energy to chlorophyll-a.
(viii) Two chlorophyll a molecules form the reaction centre.
(ix) In PS-I, the reaction centre chlorophyll-a has an absorption peak at 700 nm, hence is called P700, while in PS-II it has absorption maxima at 680 nm, and is called P680.
(x) The splitting of water is associated with the PS-I.
Choose the correct option given below :-
(i) Joseph Priestley in 1770 performed a series of experiments that revealed the essential role of air in the growth of green plants.
(ii) O2 evolved by the sulphur bacteria comes from H2O.
(iii) The mesophyll cells in the leaves have a large numbers of chloroplasts.
(iv) The membrane system is responsible for trapping the light energy and also for the synthesis of ATP and NADPH in chloroplast.
(v) The wavelength at which there is minimum absorption by chlorophyll-a, i.e. in the blue and red region shows higher rate of photosynthesis.
(vi) Chlorophyll a is the chief pigment associated with photosynthesis.
(vii) Thylakoid pigments like chlorophyll b. xanthophylls and carotenoids are accessory pigments that absorb light and transfer the energy to chlorophyll-a.
(viii) Two chlorophyll a molecules form the reaction centre.
(ix) In PS-I, the reaction centre chlorophyll-a has an absorption peak at 700 nm, hence is called P700, while in PS-II it has absorption maxima at 680 nm, and is called P680.
(x) The splitting of water is associated with the PS-I.
Choose the correct option given below :-
Identify the correct set of statements with regard to properties of humus
(a) Highly resistant to microbial action
(b) Dark-colored amorphous substance
(c) End product of detritus food chain
(d) Reservoir of nutrients
(e) Undergoes decomposition very fast
Choose the correct answer from the options given below :
(a) Highly resistant to microbial action
(b) Dark-colored amorphous substance
(c) End product of detritus food chain
(d) Reservoir of nutrients
(e) Undergoes decomposition very fast
Choose the correct answer from the options given below :
What is the approximate ratio of animals and plants species in our country?
$A$ : Tropics have more biodiversity.
→$R$ : Climate of tropical region is more seasonal.
$A$ : Seeds do not sprout when $ABA$ is overcome by Gibberellins.
$R$ : $GA$ inhibits protein and $RNA$ synthesis.
→$R$ : $GA$ inhibits protein and $RNA$ synthesis.
Enzymes are basically or All enzymes contain