Biology MCQs

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Flowering in long day plants is related to Gibberlin. Long-day plants usually flower when the night length falls below their critical photoperiod. Many of our summer blooming flowers and garden vegetables are long day plants.

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Karnal bunt is a fungal disease of wheat, durum wheat, and triticale. T. indica is the fungal pathogen causing Karnal bunt of wheat seeds. Its distribution is mainly limited to northwest India and adjoining countries.

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DNA test is most suitable to judge paternity. It looks at specific locations of a person’s genome, in order to find or verify
ancestral genealogical relationships. It can also be used to estimate the ethnic mixture of an individual.

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lysotrophic nutrition or Saprotrophic nutrition is a process of chemoheterotrophic extracellular digestion which is involved in the processing of decayed organic matter. It occurs in saprotrophs, and is most often associated with fungi and soil bacteria.

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An endoscopy is used in medicine to look for the ulcers in the stomach. The endoscopy procedure uses an endoscope to examine the interior of a hollow organ or cavity of the body. Unlike many other medical imaging techniques, endoscopes are inserted directly into the organ.

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Sexual reproduction in flowering plants involves the production of male and female gametes, the transfer of the male gametes to the female ovules in a process called pollination. After pollination occurs, fertilization happens and the ovules grow into seeds within a fruit.

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In biology, tissue is a cellular organizational level between cells and a complete organ. Animal tissues are grouped into four basic types: connective, muscle, nervous, and epithelial.

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Mycology is the branch of biology concerned with the study of fungi, including their genetic and biochemical properties, their taxonomy and their use to humans as a source for tinder, medicine, food, and entheogens, as well as their dangers, such as toxicity or infection.

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Lactobacillus Bacteria in Milk changes Milk to Curd. When milk is heated to a temperature of 30-40 degrees centigrade and a small amount of old curd added to it, the lactobacillus in that curd sample gets activated and multiplies. These convert the lactose into lactic acid.

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Among the above all, the sugarcane has the highest photosynthetic activity. Photosynthesis is a chemical process that occurs in many forms of bacteria and virtually all plants, including aquatic plants and algae. The rate of photosynthesis in a plant is dependent on the environmental changes, as well as to intrinsic features of plant. The photosynthetic rate in sugarcane is directly related with the variation of solar radiation during the day.