ICBN stands for
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(a) International Code of Botanical Nomenclature (b) International congress of Biological Names (c) Indian Code of Botanical Nomenclature (d) Indian Congress of Biological Names.
Correct Answer:
International Code of […]
What is not a common feature is perplaneta and scorpions
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(a) Excretory organs are malpighian tubules (b) no appendages in abdomen (c) Respiratory organs are trachea (d) Both are mostly terrestrial arthropods
Pentamerous, actinomorphic flowers, bicarpellate ovary with oblique septa and fruit a capsule of berry, are characteristic features of
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(a) Brassicaceae (b) Solanaceae (c) Liliaceae (d) Asteraceae
Correct Answer:
Solanaceae
Explanation:
Pentamerous, actinomorphic […]
Which one of the following statements is correct ?
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(a) Both Azotobacter and Rhizobium fix atomspheric nitrogen in root nodules of plants (b) Cyanobacteria such as Anabaena and Nostoc are important mobilizers […]
Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starach (a-e) make it useful as a storage material? (A) Easily translocated (B) Chemically non-reactive (C) Easily digested […]
Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm […]
The repture and fractionation do not usually occur in the water column in vessel / tracheids during the ascent of sap because of
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(a) lignified thick walls (b) cohension and adhesion (c) […]
Plasmodesmata are:
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(a) locomotary structures (b) membranes connecting the nucleus with plasmalemma (c) connections between adjacent cells (d) lignified cemented layers between cells
Correct Answer:
connections between adjacent cells
Explanation:
Plasmodesmata are connections […]
Vacuole in a plant cell
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(a) is membrane-bound and contains storage proteins and lipids (b) is membrane-bound and contains water and excretory substances (c) lacks membrane and contains air (d) lacks membrane and […]
What is true about ribosomes
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(a) The prokaryotic ribosomes are 80S, where “S” stands for sedimentation coefficient (b) These are composed of ribonucleic acid and proteins (c) These are found only in eukaryotic […]
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