Biology MCQs

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Cells of the epidermis produce root hairs near the root apex. These cells are generally thin-walled, in contrast to the cells of the cortex, lying below the surface, which ultimately may become very thick-walled. The root hairs have fundamental importance in absorption of water and nutrients.

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The connective tissues include several types of fibrous tissue that vary only in their density and cellularity, as well as the more specialized and recognizable variants—bone, ligaments, tendons, cartilage, and adipose tissue. Skin is not a connective tissue. It is the body’s largest organ and consists of multiple layers, including the epidermis (outermost layer) and the dermis (deeper layer). Skin primarily serves as a protective barrier and regulates temperature, but it is mainly classified as an epithelial tissue due to its structure and function.

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White blood cells help you fight infection.  When one gets sick, white blood cell count is higher than normal. This is because your body is releasing more of these cells to fight the infection.

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Metastasis is a complex process that involves the spread of a tumor or cancer to distant parts of the body from its original site. The cancerous cells are sloughed from the tumours and reach distant sites through blood, and whenever they get lodged in the body, they start a new tumour there. This property called metastasis is the most feared property of malignant tumours.

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The method of growing plants in the absence of soil is called as hydroponics. The required suppliments to the plants are supplied through the mineral nutrient solutions.

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Gluteus maximus is the largest muscle in the human body located at the lower back, it is also called as the buttocks.

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The Father of Taxonomy is Carolus Linnaeus. He classified organisms into five parts.

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In biology, a scheme of classifying organisms into six kingdoms: Proposed by Carl Woese et al: Animalia, Plantae, Fungi, Protista, Archaea/Archaeabacteria, and Bacteria/Eubacteria.

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Chloroplasts are green because they contain the pigment chlorophyll, which is important for photosynthesis. Chlorophyll occurs in many different forms. Chlorophyll a and b are the major pigments of higher plants and green algae.

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An enzyme is a protein that acts as a catalyst in living organisms, and controls the rate of a chemical reaction inside the body. Carbonic anhydrase is mainly found in RBCs of blood cells, pancreatic cells, etc.