Which one of the following shows isogamy with non-flagellated gametes?
Options
(a) Sargassum (b) Ectocarpus (c) Ulothrix (d) Spirogyra
Correct Answer:
Spirogyra
Explanation:
In Spirogyra, sexual reproduction occurs through conjugation. Gametes are non-flagellated morphologically […]
Which one of the following living organisms completely lacks a cell wall?
Options
(a) Cyanobacteria (b) Sea- fan (Gorgonia) (c) Saccharomyces (d) Blue- green algae
Correct Answer:
Sea- fan (Gorgonia)
Explanation:
No explanation […]
Which one of the following is wrongly matched?
Options
(a) Transcription- Writing information from DNA to t-RNA (b) Transcription- Using information in m-RNA to make protein (c) Repressor protein – Binds to operator […]
Which one of the following is wrong about Chara?
Options
(a) Upper oogonium and lower round antheridium (b) Globule and nucule present on the same plant (c) Upper antheridium and lower oogonium (d) […]
Which one of the following is a non-reducing carbohydrate?
Options
(a) Maltose (b) Sucrose (c) Lactose (d) Ribose 5-phosphate
Correct Answer:
Sucrose
Explanation:
Sucrose is classified under non reducing sugars because it does not […]
Which one of the following growth regulators is known as stress hormone?
Options
(a) Abscissic acid (b) Ethylene (c) GA3 (d) Indole acetic acid
Correct Answer:
Abscissic acid
Explanation:
No explanation available. Be […]
Which one of the following fungi contains hallucinogens?
Options
(a) Morchella esculenta (b) Amanita muscaria (c) Neurospora sp. (d) Ustilago sp.
Correct Answer:
Amanita muscaria
Explanation:
No explanation available. Be the first to […]
Which one of the following are analogous structures?
Options
(a) Wings of Bat and Wings of Pigeon (b) Gills of Prawn and Lungs of Man (c) Thorns of Bougainvillea and Tendrils of Cucurbita […]
Which of the following shows coiled RNA strand and capsomeres?
Options
(a) Tobacco mosaic virus (b) Measles Virus (c) Retrovirus (d) Polio virus
Correct Answer:
Tobacco mosaic virus
Explanation:
No explanation […]
Which of the following is responsible for peat formation?
Options
(a) Marchanita (b) Riccia (c) Funaria (d) Sphagnum
Correct Answer:
Sphagnum
Explanation:
Sphagnum, a moss, provides peat that have long been used as fuel. […]
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