Practice free Botany NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which factor determines the different types of alcoholic drinks obtained from fermentation, according to the provided text?
The text explains: 'Depending on the type of the raw material used for fermentation and the type of processing (with or without distillation) different types of alcoholic drinks are obtained.'
'Toddy', a traditional drink from southern India, is made by fermenting which raw material?
The text mentions, '‘Toddy’, a traditional drink of some parts of southern India is made by fermenting sap from palms.'
Industrial production of beverages requires growing microbes in large vessels. What are these vessels called?
The text states, 'Production on an industrial scale, requires growing microbes in very large vessels called fermentors (Figure 8.4).'
Which of the following beverages is produced by the distillation of fermented broth?
The text clarifies, 'Wine and beer are produced without distillation whereas whisky, brandy and rum are produced by distillation of the fermented broth.' Toddy is fermented palm sap, not typically distilled for consumption in its traditional form.
Besides 'brewer's yeast', Saccharomyces cerevisiae is also known for its role in preparing which household product?
The text states, 'the same yeast Saccharomyces cerevisiae used for bread-making and commonly called brewer’s yeast, is used for fermenting malted cereals and fruit juices'. Thus, it's also used for bread.
Which of the following describes the interaction between a sparrow eating a seed?
The text states, 'a sparrow eating any seed is no less a predator.' While animals eating plants are often categorized as herbivores, in a broad ecological context, they are not very different from predators. Therefore, predation is the most accurate description.
Predators play an important role in an ecosystem by:
The text explicitly states: 'They keep prey populations under control...Predators also help in maintaining species diversity in a community, by reducing the intensity of competition among competing prey species.'
The introduction of the prickly pear cactus into Australia in the early 1920s exemplifies a situation where:
The text mentions, 'When certain exotic species are introduced into a geographical area, they become invasive and start spreading fast because the invaded land does not have its natural predators.' The prickly pear cactus in Australia is given as a specific example of this phenomenon.
Why are predators in nature considered 'prudent'?
The text states, 'If a predator is too efficient and overexploits its prey, then the prey might become extinct and following it, the predator will also become extinct for lack of food. This is the reason why predators in nature are prudent.'
Which of the following is a morphological defense mechanism evolved by plants against herbivores?
The text mentions, 'Thorns (Acacia, Cactus) are the most common morphological means of defence.' The other options are chemical defenses.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.