Whorled, simple leaves with reticulate venation are present in
Options
(a) Calotropis (b) Neem (c) China rose (d) Alstonia
Correct Answer:
Alstonia
Explanation:
Whorled phyllotaxy is a feature of Nerium and Alstonia. In […]
Of the total incident solar radiation the proportion of PAR is:
Options
(a) about 70% (b) about 60% (c) less than 50% (d) more than 80%
Correct Answer:
less than 50%
Explanation:
Out of […]
A prokaryotic autotrophic nitrogen fixing symboint is found in:
Options
(a) Alnus (b) Cycas (c) Cicer (d) Pisum
Correct Answer:
Cycas
Explanation:
A prokaryotic autotrophic nitrogen fixing symbiont is found in Cycas.
Which one of the following elements in plants is not remobilised?
Options
(a) Phosphorus (b) Calcium (c) Potassium (d) Sulphur
Correct Answer:
Calcium
Explanation:
Calcium is not remonilized from the leaves to the […]
Important site for formation of glycoproteins and glycolipids is
Options
(a) vacuole (b) golgi apparatus (c) plastid (d) Iysosome
Correct Answer:
golgi apparatus
Explanation:
Eukaryotic cells contain a unique cluster of membrane vesicles known […]
An organism used as a biofertilizer for raising soyabean crops is
Options
(a) Azotobacter (b) Azospirillum (c) Rhizobium (d) Nostoc
Correct Answer:
Rhizobium
Explanation:
No explanation available. Be the first to write the explanation […]
The function of leg haemoglobin in the root nodules of legumes is:
Options
(a) inhibition of nitrogenase activity (b) oxygen removal (c) nodule differentiation (d) expression of nif gene
Correct Answer:
oxygen removal
The cork cambium, cork and secondary cortex are collectively called:
Options
(a) phelloderm (b) phellogen (c) periderm (d) phellem
Correct Answer:
periderm
Explanation:
Phellem, phellogen and phelloderm are collectively called periderm
Continuous addition of sugars in ‘fed batch’ fermentation is done to:
Options
(a) produce methane (b) obtain antibiotics (c) purify enzymes (d) degrade sewage
Correct Answer:
purify enzymes
Explanation:
A fed batch is […]
Which one of the following also acts as a catalyst in a bacterial cell?
Options
(a) 5 sr RNA (b) sn RNA (c) hn RNA (d) 23 sr RNA
Correct Answer:
23 sr RNA
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