Archives

Which One Of The Following Is Not A Biofertilizer?

a) Mycorrhiza b) Agrobacterium c) Rhizobium d) Nostoc Answer: b) Agrobacterium Explanation: Agrobacterium is a gene transfer agent.... View Article

Which One Of The Following Statements Is Correct For Secondary Succession?

a) It begins on a bare rock b) It follows primary succession c) It occurs on a deforested site d) It is similar to primary succession except... View Article

Large Woody Vines Are More Commonly Found In?

a) Temperate forests b) Mangroves c) Alpine forests d) Tropical rainforests Answer: d) Tropical rainforests Lianas and epiphytes are... View Article

Eutrophication Is Often Seen In?

a) Deserts b) Ocean c) Freshwater lakes d) Mountains Answer: c) Freshwater lakes Sol. Answer (3)... View Article

Secondary Sewage Treatment Is Mainly A?

a) Biological process b) Chemical process c) Mechanical process d) Physical process Answer: a) Biological process... View Article

Mass Of Living Matter At A Trophic Level In An Area At Any Time Is Called?

a) Detritus b) Standing crop c) Humus d) Standing state Answer: b) Standing crop... View Article

In Which One Of The Following Pollinations Is Autogamous?

a) Cleistogamy b) Xenogamy c) Chasmogamy d) Geitonogamy Answer: a) Cleistogamy Cleistogamy favours self-pollination.... View Article

What Would Be The Number Of Chromosomes Of The Aleurone Cells Of A Plant With 42 Chromosomes In Its Root Tip Cells?

a) 42 b) 84 c) 63 d) 21 Answer: c) 63 Aleurone is triploid and root tip is diploid.... View Article

Filiform Apparatus Is A Characteristic Feature Of?

a) Suspensor b) Egg c) Zygote d) Synergid Answer: d) Synergid At the micropylar ends of synergids, these are finger-like projections.... View Article

A Prokaryotic Autotrophic Nitrogen Fixing Symbiont Found In?

a) Cicer b) Pisum c) Cycas d) Alnus Answer: c) Cycas... View Article

Cam Helps The Plants In?

a) Secondary growth b) Conserving water c) Disease resistance d) Reproduction Answer: b) Conserving water... View Article

The Cork Cambium, Cork And Secondary Cortex Are Collectively Called?

a) Phellem b) Phelloderm c) Phellogen d) Periderm Answer: d) Periderm... View Article

In Land Plants The Guard Cells Differ From Other Epidermal Cells In Having?

a) Chloroplasts b) Endoplasmic reticulum c) Mitochondria d) Cytoskeleton Answer: a) Chloroplasts The guard cells are special... View Article

Ground Tissue Includes?

a) Epidermis and cortex b) All tissues internal to endodermis c) All tissues except epidermis and vascular bundles d) All tissues external... View Article

Which One Of The Following Elements In Plants Is Not Remobilised?

a) Phosphorus b) Potassium c) Calcium d) Sulphur Answer: c) Calcium... View Article

The Function Of Leghemoglobin In The Root Nodules Of Legumes Is?

a) Inhibition of nitrogenase activity b) Nodule differentiation c) Oxygen removal d) Expression of nif gene Answer: c) Oxygen removal... View Article

Nitrifying Bacteria.

a) Convert free nitrogen to nitrogen compounds b) Oxidize ammonia to nitrates c) Convert proteins into ammonia d) Reduce nitrates to free... View Article

Which One Of The Following Also Acts As A Catalyst In A Bacterial Cell?

a) 23 sr RNA b) 5 sr RNA c) snRNA d) hn RNA Answer: a) 23 sr RNA... View Article

A Collection Of Plants And Seeds Having Diverse Alleles Of All The Genes Of A Crop Is Called?

a) Gene library b) Genome c) Germplasm d) Herbarium Answer: c) Germplasm Explanation: Germplasm could be picked as plantlets or seeds for... View Article

Mutations Can Be Induced With?

a) Gamma radiations b) Ethylene c) Infrared radiations d) I A A Answer: a) Gamma radiations... View Article

M	T	W	T	F	S	S
						1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31