Biology Quiz 5

Charles Robert Darwin was an English naturalist, geologist and biologist, best known for his contributions to the Theory of Evolution.

Yawning occurs when CO₂ concentration in the blood is high, and Oxygen (O₂) concentration is low. The yawn acts as a boost to the O₂ levels.

Biogas is the mixture of gases produced by the breakdown of organic matter in the absence of oxygen (anaerobically), primarily consisting of methane and carbon dioxide. Biogas can be produced from raw materials such as agricultural waste, municipal waste, plant material, sewage, green waste or food waste. Although, cattle dung has been recognised as the chief raw material for biogas plants.

Corpus luteum (CL) is a yellow hormone-secreting body in the female reproductive system which secretes progesterone. It is a completely normal cyst that forms on the ovary every single month in women of childbearing age. This cyst is actually a group of cells inside ovaries that forms during each menstrual cycle. It appears right after an egg leaves the ovary (ovulation).

Araneology is the study of spiders. It is the scientific study of arachnids, which comprise spiders and related animals such as scorpions, pseudoscorpions, and harvestmen. The raising of bees is known as apiculture. The study of aphids is known as aphidology. Acarology is the study of mites and ticks.

The smallpox vaccine is made from a virus called vaccinia, which is a poxvirus similar to smallpox, but less harmful. It contains live vaccinia virus, not a killed or weakened virus like many other vaccines. Other live virus vaccines currently used include measles, mumps, rubella, and chickenpox.

Ascorbic acid – Vitamin-C, Chlorophyll – Photosynthetic pigment, Carotenoid – Quencher, Superoxide dismutase – Enzyme. Superoxide dismutase (SOD) is an enzyme found in all living cells.

Methyl bromide (CH₃Br) damages the ozone layer once released into the atmosphere. It is also toxic and harmful to humans and fauna if not used carefully. Methyl bromide is an odorless, colourless gas used to control a wide variety of pests in agriculture, including fungi, weeds, insects, nematodes (or roundworms), and rodents.

Allantois of Embryo helps in excretion. The allantois is a hollow sac-like structure filled with clear fluid that forms part of a developing amniote's conceptus (which consists of all embryonic and extra-embryonic tissues). It helps the embryo exchange gases and handles liquid waste.

Ethology is a branch of zoology dealing with the scientific study of animal behaviour.