Biology MCQs

Notes:
Each adrenal gland is located on the top of each kidney (forming a hat-like structure on the top of the kidneys). Each adrenal gland has two parts viz. outer cortical portion and inner adrenal cortex. Further, there is a central part called adrenal medulla.

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When the body’s immune system cells destroy the insulin producing beta cells of the pancreas is termed as Type 1 diabetes. Symptoms may include increased thirst, frequent urination, hunger, fatigue and blurred vision.

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Gout is a metabolic disorder which is usually followed / accompanied by arthritis are characterized by high levels of uric acid in the blood and uric acid crystals become lodged in the joints.

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Flowering in long day plants is related to Gibberlin. Long-day plants usually flower when the night length falls below their critical photoperiod. Many of our summer blooming flowers and garden vegetables are long day plants.

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The pitcher plant is characterized as insectivorous. Pitcher plants are several different carnivorous plants. They have modified leaves known as pitfall traps which is a prey-trapping mechanism featuring a deep cavity filled with digestive liquid.

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The insect “Apis mellifera” is commonly known as the honey bee. The Western honey bee is the most common of the 7–12 species of honey bees worldwide. The genus name “Apis” is Latin for “bee”, and “mellifera” is Latin for “honey-bearing” or “honey carrying”.  Honey bees are known for their role in pollination. They were domesticated for honey production and crop pollination. Honey bees produce honey, wax, propolis, and royal jelly.  Honey bees are red/brown with black bands and orange yellow rings on their abdomen. They have hair on their thorax and less hair on their abdomen. The workers and queens have stingers, whereas the drones are stingless.

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Organisms in the class Mammalia all have milk producing mammary glands; cells with a membrane-bounded nucleus and a dorsal hollow nerve cord. Chitin in Cell Walls is the feature of Kingdom fungi.

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Fructose, or fruit sugar, is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose. It is one of the three dietary monosaccharides, along with glucose and galactose, that are absorbed directly into blood during digestion.

Notes:
Water is passively transported into the roots and then into the xylem. The forces of cohesion and adhesion cause the water molecules to form a column in the xylem. Water moves from the xylem into the mesophyll cells, evaporates from their surfaces and leaves the plant by diffusion through the stomata.

Notes:
Hemoglobin is the protein inside red blood cells that carries oxygen. Red blood cells also remove carbon dioxide from your body, transporting it to the lungs for you to exhale.