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Dura mater is a membrane that envelops the arachnoid mater. It surrounds and supports the dural sinuses (also called dural venous sinuses, cerebral sinuses, or cranial sinuses) and carries blood from the brain toward the heart

No expanded working has been attached for this question yet. The verified answer is Option D.

Insects, fish, reptiles and amphibians are cold blooded because their body temperature changes along with the external temperature which are known as poikilothermic, while birds and mammals are warm blooded because they maintain a high body temperature regardless of the external temperature. A poikilothermic is an animal whose internal temperature varies considerably. It is the opposite of a homoeothermic, an animal which maintains thermal homeostasis

The arteries are perceived as carrying oxygenated blood to the tissues,

A mixed gland is a gland which has both endocrine and exocrine functions. The exocrine component has ducts, through which its secretions pass. The pancreas is a gland with both endocrine (insulin production) and exocrine (production of digestive enzymes) functions.

Population is a group of organisms of the same species living in the same area at the same time, and which are capable of interbreeding. population is the right answer

Tikka Disease is a common disease in ground nut caused by Cercospora arachidicola and Cercospora personata. In the diseased condition, many circulars spots appear on the surface of the leaf . The conidia of the fungus present in soil or those present in the fruit shell is the source of infection

Special temporary organs or embryonic membranes form within the egg, both to protect the embryo and to provide for its nutrition, respiration, and excretion. These organs include the yolk sac. The yolk sac is also responsible for the initial circulation and is in charge of delivering nutrients, via a primitive aorta, to the developing embryo through a process called vitelline circulation.

Butter is about 80% fat, and the rest is mostly water and each gram of fat provides twice as much energy as carbohydrate or protein. It is very high in saturated (about 70%) fatty acids, and contains a fair amount of monounsaturated fatty acids (about 25%). The most abundant chemical in meat is water followed by protein then fat. Carbohydrates, minerals and vitamins occur on much smaller amounts but nevertheless are very important metabolically and nutritionally

Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion.

General: Germinal disk (blastoderm) -- a small, circular, white spot (2-3 mm across) on the surface of the yolk; it is where the sperm enters the egg. The nucleus of the egg is in the blastodisc. The embryo develops from this disk, and gradually sends blood vessels into the yolk to use it for nutrition as the embryo develops A small mass of active protoplasm found directly under the vitelline membrane

vitamin C deficiency can occur as part of general under nutrition, but severe deficiency result into causing scurvy. Symptoms include fatigue, depression, and connective tissue defects (eg, gingivitis, petechiae, rash, internal bleeding, impaired wound healing).

Trichocyst, a structure in the cortex of certain ciliate and flagellate protozoans consisting of a cavity and long, thin threads that can be ejected in response to certain stimuli. Trichocysts may be widely distributed over an organism or restricted to certain areas (e.g., tentacles, papillae, around the mouth). It is also a structure in the cortex of certain ciliate and flagellate protozoans consisting of a cavity and long, thin threads that can be ejected in response to certain stimuli

A cysticercus can survive for several years in the animal. Humans become infected by ingesting raw or undercooked infected meat it can be contacted through ingesting uncooked meat

An animal with radial symmetry really has no right and left side or head and rear end. This animals do not move, so they can reach into their environment on all sides. Starfish is an example of radial symmetry. They can be attached to a substrate, like the sea anemone, or floating, like jellyfish. It also occurs in simple animals including the aquatic cnidarians, which include hydra, corals, jellyfish and sea anemones, and Ctenophora, which are comb jellies. One of the common traits amongst the cnidarians is their symmetry. Hydras, like all cnidarians, display radial symmetry.