Botany MCQs for NEET — Practice Questions with Answers

Biological control in agriculture involves using natural predators or parasites to control pest populations. This is a form of predation because the biological control agents prey on the pest organisms to reduce their numbers and prevent damage to crops. For example, ladybugs are often released to control aphid populations.

Interspecific competition occurs when individuals of different species compete for the same resource in an ecosystem. In this case, both the turtles and goats on the Galápagos Islands are competing for tender grass, making it an example of interspecific competition.

The carrying capacity of a population is determined by limiting resources such as food, water, shelter, and other necessities. When these resources are limited, the population cannot grow beyond a certain point. Birth rate, death rate, and reproductive ability are factors that influence population dynamics, but it is the availability of limiting resources that ultimately sets the carrying capacity.

A biotic community refers to a group of interrelated populations of different species living together in a particular habitat. These populations interact with each other in various ways, such as through food chains, mutualism, competition, and other ecological relationships.

Members of the same species have the capacity to interbreed and produce fertile offspring. This is one of the key criteria that define a species. While they may occupy different ecological niches and habitats, the ability to interbreed is a distinguishing characteristic of conspecifics.

Melvin Calvin is known for his discovery of the Calvin cycle, which is the series of biochemical redox reactions that take place in the stroma of chloroplasts in photosynthetic organisms. This cycle is responsible for carbon fixation during photosynthesis.

Richard Willstätter and Arthur Stoll (often misspelled as Stahi) were awarded the Nobel Prize for their work on the chemical composition of chlorophyll and other plant pigments such as carotenoids.

The non-polar part of chlorophyll is the phytol tail, which is a long hydrocarbon chain that helps anchor the chlorophyll molecule to the hydrophobic regions of the thylakoid membrane within the chloroplast.