Biology MCQs

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Cinnamon is obtained from the inner bark of cinnamon trees. Specifically, the bark is peeled off during the rainy season when it is still moist and flexible. After being removed, the bark is processed and dried to produce the spice we recognize as cinnamon.

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Vitamin K is naturally produced by the bacteria in the intestines, and plays an essential role in normal blood clotting, promoting bone health, and helping to produce proteins for blood, bones, and kidneys.

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Wheat germ oil is extracted from the germ of the wheat kernel, which makes up only 2.5% by weight of the kernel. It has the highest content of Vitamin E.

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An example of Protozoa, Anthropod, Aves, Mammal & Reptile is Amoeba, Scorpion, Hen, Bat , Lizard respectively.

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An arthropod is an invertebrate animal having an exoskeleton, a segmented body, and paired jointed appendages. It is considered as the largest phylum in the animal kingdom with an estimated 85 percent of known species included in this phylum.

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A plant belonging to angiosperms group would show least adaptation to marine water. Angiosperms are vascular plants that have stems, roots, and leaves.

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In Binominal nomenclature, the name of organisms is in genus species pattern. The second word in an organism’s scientific name refers to one species within the genus; is the specific epithet but actually gives no clue as to species if used alone.

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The coconut water from tender coconut that we are familiar with, is nothing but free nuclear endosperm (made up of thousands of nuclei) and the surrounding white kernel is the cellular endosperm. In the most common types of endosperm development, the Primary Endosperm Nucleus (PEN) undergoes successive.

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Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin. All species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual’s ability to compete, survive, and reproduce.
Darwin’s evolutionary theory of natural selection gave a more rational explanation of the formation of new species. As per natural selection, various species originated from a single species as a result of adaptation to the changing environment.
Natural selection takes place in four different ways as follows:
• Variation – The changes accumulated over a period of time in an organism usually gives rise to a new species.
• Inheritance – It is the passing on of the variations over generations which ultimately lead to speciation.
• A high rate of growth of population – This gives rise to more number of organisms being reproduced by a species than the environment can support which might lead to the extinction of that particular species.
• Differential survival and reproduction – The superior variations lead to survival of a particular organism and the inferior or negative variation leads to extinction. The superior variations are the ones inherited during reproduction.

Notes:
Any legume plants will help in nitrogen fixation. Beans contain symbiotic bacteria called Rhizobia within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants and this helps to fertilize the soil.