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Height of a plant is regulated by:
The correct answer is (c) Growth hormones under the influence of the enzymes coded by a gene. The height of a plant is controlled by growth hormones like auxins and gibberellins. These hormones function under the regulation of enzymes coded by genes. Genes produce proteins and enzymes that influenceRead more
The correct answer is (c) Growth hormones under the influence of the enzymes coded by a gene. The height of a plant is controlled by growth hormones like auxins and gibberellins. These hormones function under the regulation of enzymes coded by genes. Genes produce proteins and enzymes that influence hormone activity, thereby controlling growth patterns, elongation, and ultimately determining the height of the plant.
See lessA sportsman, after a long break of his routine exercise, suffered muscular cramps during a heavy exercise session. This happened due to:
The correct answer is: (c) lack of oxygen and formation of lactic acid. When a sportsman resumes heavy exercise after a long break, his muscles may not get enough oxygen. This oxygen deficit causes anaerobic respiration in muscles, converting glucose into lactic acid instead of carbon dioxide and waRead more
The correct answer is: (c) lack of oxygen and formation of lactic acid. When a sportsman resumes heavy exercise after a long break, his muscles may not get enough oxygen. This oxygen deficit causes anaerobic respiration in muscles, converting glucose into lactic acid instead of carbon dioxide and water. Accumulation of lactic acid leads to muscular cramps and fatigue.
See lessA farmer wants to grow banana plants genetically similar enough to the plants already available in his field. Which one of the following methods would you suggest for this purpose?
The correct answer is (c) Vegetative propagation. Banana plants are commonly grown by vegetative propagation because bananas usually do not produce viable seeds. In this method, new plants are developed from parts like suckers or rhizomes of the parent plant. This ensures the offspring are geneticalRead more
The correct answer is (c) Vegetative propagation. Banana plants are commonly grown by vegetative propagation because bananas usually do not produce viable seeds. In this method, new plants are developed from parts like suckers or rhizomes of the parent plant. This ensures the offspring are genetically identical to the parent, maintaining desired qualities and uniformity in the crop.
See lessReceptors are usually located in sense organs. Gustatory receptors are present in (a) tongue (b) nose (c) eye (d) ear
The correct answer is (a) tongue. Gustatory receptors are the taste receptors found on the tongue, mainly located in the taste buds. They help in detecting different tastes like sweet, sour, salty, bitter, and umami. Other sense organs contain receptors for smell, vision, and hearing, but taste receRead more
The correct answer is (a) tongue. Gustatory receptors are the taste receptors found on the tongue, mainly located in the taste buds. They help in detecting different tastes like sweet, sour, salty, bitter, and umami. Other sense organs contain receptors for smell, vision, and hearing, but taste reception specifically occurs through receptors present in the tongue.
See lessGenerally, food is broken and absorbed within the body of organisms. In which of the following organisms is it done outside the body?
The correct answer is (b) Mushroom. Mushrooms show extracellular digestion, meaning they release digestive enzymes outside their body onto decaying organic matter. The enzymes break down complex food into simpler soluble substances, which are then absorbed. In contrast, organisms like Amoeba and ParRead more
The correct answer is (b) Mushroom. Mushrooms show extracellular digestion, meaning they release digestive enzymes outside their body onto decaying organic matter. The enzymes break down complex food into simpler soluble substances, which are then absorbed. In contrast, organisms like Amoeba and Paramecium digest food internally, while lice directly suck pre-digested food from their host.
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