Biology

The brain does not contain involuntary muscles; it is composed of nervous tissue. Involuntary muscles are found in the digestive system, blood vessels, and the heart (cardiac muscle).

Phytoplankton are photosynthetic organisms that release molecular oxygen into water as a byproduct of photosynthesis, unlike E.coli, Amoeba, or Salmonella, which do not produce oxygen.

The contraction and expansion of the walls of the food pipe (esophagus) to move food is called peristaltic movement. This wave-like muscle contraction helps push food toward the stomach after partial digestion.

Involuntary muscles are muscles that work without conscious control. They are found in internal organs such as those in the digestive system, where they help move food along the tract automatically.

Gastric juice is secreted by the glands located in the stomach, which aids in digestion by breaking down food.

Seeds generally require oxygen, moisture, and a suitable temperature to germinate, but light is not always necessary. Many seeds can germinate in darkness, so they can germinate in the absence of light.

The liver is often called the chemical factory of the human body because it performs numerous vital chemical processes, including detoxification, protein synthesis, and production of biochemicals necessary for digestion.

Boron is a micronutrient essential for plant growth, required in small amounts. Oxygen, nitrogen, and carbon are macronutrients or elements involved in larger quantities in plants.

Cold-blooded animals, or ectotherms, rely on external sources to regulate their body temperature. Frogs and snakes are cold-blooded, whereas birds, bats, rats, and monkeys are warm-blooded animals.

A disease that is transmitted from animals to humans is called a zoonosis. This term specifically refers to infections that jump species from animals to people.

Lipids are a diverse group of hydrophobic molecules that include fats, oils, waxes, and steroids. They are characterized by their insolubility in water, unlike carbohydrates, proteins, and nucleic acids which are generally hydrophilic or amphipathic.

A crescograph is an instrument used to measure the growth rate of plants by recording minute changes in their size over time. It is specifically designed for plants, not microorganisms, humans, or pollution.

Microbiology is the branch of science that studies microorganisms, including viruses, bacteria, yeasts, and protozoa. The other options do not accurately describe this field.

The spleen is located only on the left side of the human body, whereas lungs, kidneys, and eyes are paired organs found on both the right and left sides. Therefore, the spleen is the exception.

The study of the structure of the body is called Anatomy. It focuses on the physical organization of organisms, distinguishing it from other biological sciences.

The medical term for fever is 'Pyrexia,' which refers to an elevated body temperature. The other options are unrelated: Hypothermia is abnormally low body temperature, Hypertension is high blood pressure, and Thermophilia refers to heat-loving organisms.

Auxology is the scientific study of growth, especially human growth. The other options refer to unrelated fields: Autology is self-study or self-knowledge, Avionics relates to aircraft electronics, and Axiology is the study of values.

The kangaroo rat can survive its entire life without drinking water, obtaining moisture from the seeds it eats and metabolic water production. Other animals like camels and desert lizards require some water intake, while cuttlefish live in aquatic environments.

The scientific name for the family of flying fish is Exocoetidae, which includes various species known for their ability to glide above water. The other options refer to different fish species unrelated to flying fish.

Ginger is an example of a rhizome, which is an underground horizontal stem that grows near the soil surface and produces roots and shoots. Carrot is a root, tomato is a fruit, and garlic is a bulb, not a rhizome.

Only male frogs produce croaking sounds because they have vocal sacs (sound boxes) that amplify their calls, which females lack. This helps males attract mates and establish territory.

Sleeping sickness is caused by the tsetse fly, not mosquitoes. Dengue fever, malaria, and filariasis are all transmitted by mosquitoes, making sleeping sickness the correct answer as it is not mosquito-borne.

Sleeping sickness, also known as African trypanosomiasis, is caused by the parasite Trypanosoma, which is transmitted by the tsetse fly. The other options are different parasites causing other diseases.

The human eye socket, or orbit, is formed by seven bones: the frontal bone, sphenoid bone (lesser and greater wings), zygomatic bone, maxillary bone, palatine bone, ethmoid bone, and lacrimal bone. This is well established in anatomical sources and confirmed by multiple authoritative references. Therefore, the correct answer is 'Seven' (option D).

Diseases or infections that can be naturally transmitted from vertebrate animals to humans are called zoonoses. This term is widely accepted in medical and biological sciences, making option B the correct answer.