AFMC Biology Mock Test - 1 - NEET MCQ

2123 is the dental formula .

incisors (2)
canine (1)
premolar (2)
molar (3) .
Total =8 ( in half of the lower jaw)

so, 8+8 =16

Vitamin E is also called as tocopherol. Because it isn't just one compound, it's actually a name used to describe eight chemical forms of fat-soluble compounds found in nature. And here Vitamin D = Calciferol, Vitamin B = Riboflavin and Vitamin A is a betacarotene or retinol.

Bile salts can function as steroid harmone. studies on the binding of bile acids to the FRX receptor has provided two examples of how bile salts affects cholesterol homeostasis by alerting gene expression bile acids are synthesized in hepatocytes from cholesterol .

Fibrin formation: it is formed from fibrinogen, a soluble protein that is produced by the liver and found in blood plasma. When tissue damage results in bleeding, fibrinogen is converted at the wound into fibrin by the action of thrombin, a clotting enzyme.

One of them is to secrete bile. The liver cells per day secrete about 600 to 1000 ml of bile. Bile secretion is a continuous process. Certain substances are actively secreted and certain other substances are passively transported. About 400 to 800 ml of bile is produced per day in adult human beings.

Villi of small intestine contain brush bordered appearance known as micro villi.

The body burns fat after first exhausting the contents of the digestive tract along with glycogen (carbohydrates) reserves stored in muscle and liver cells. During short periods of energy abstinence, the human body will burn primarily free fatty acids from body fat stores. After prolonged periods of starvation when the body has depleted its body fat, it begins to burn lean tissue and muscle (protein) as a fuel source.

Kwashiorkor because it is caused due to deficiency of protein and the meals given in question are for protein diet.

These granules are of rough endoplasmic reticulum (RER) with rosettes of free ribosomes, and are the site of protein synthesis. It was named after Franz Nissl, a German neuropathologist who invented the Nissl staining method.

Mitosis was first observed by Strasburger (1875) and in animal cell by W.fleming (1879) term mitosis was given by Fleming (1882). (3) Occurrence : Mitosis is the common method of cell division. It takes place in the somatic cells in the animals.

Pili are used in dna transfer in bacterial conjugation process.

Testosterone is produced by the gonads (by the Leydig cells in testes in men and by the ovaries in women), although small quantities are also produced by the adrenal glands in both sexes. It is an androgen, meaning that it stimulates the development of male characteristics.

Pyramid of energy, showing the rate of energy flow and/or productivity at successive trophic levels. The pyramids of numbers and biomass may be upright or inverted depending upon the nature of the food chain in the particular ecosystem, whereas pyramids of energy are always upright.

The arteries are perceived as carrying oxygenated blood to the tissues, while veins carry deoxygenated blood back to the heart. However, in pulmonary circulation, the arteries carry deoxygenated blood from the heart to the lungs, and veins return blood from the lungs to the heart.

The P wave indicates atrial depolarization. The P wave occurs when the sinus node, also known as the sinoatrial node, creates an action potential that depolarizes the atria. The P wave should be upright in lead II if the action potential is originating from the SA node.

The earliest fossils of anatomically modern humans are from the Middle Paleolithic, about 200,000 years ago such as the Omo remains of Ethiopia and the fossils of Herto sometimes classified as Homo sapiens idaltu.

Fatty liver is the build up of fats within the cells of the liver to the point that more than 5-10% of the liver is fat. There are 2 types of fatty liver disease: alcoholic liver disease and non-alcoholic fatty liver disease (NAFLD). Fatty liver disease can progress to serious complications, such as cirrhosis of the liver.

Vegetative reproduction occurs by mitosis division so there is no chance of crossing over so the character posses by hybrid vigour do not loss but in sexual reproduction meiosis occur.

Because amniocentesis is the most accurate way to determine the baby's gender before birth.


Amniocentesis is a pre-natal diagnostic technique that is used to determine the sex and metabolic disorders of the developing foetus in the mother’s uterus through the observation of the chromosomal patterns.


This method was developed so as to determine any kind of genetic disorder present in the foetus. However, unfortunately, this technique is being misused to detect the sex of the child before birth and the female foetus is then aborted.


Thus, to prevent the increasing female foeticides, it is necessary to ban the usage of amniocentesis technique for determining the sex of a child.

Klinefelter syndrome can be caused by: One extra copy of the X chromosome in each cell (XXY), the most common cause. An extra X chromosome in some of the cells (mosaic Klinefelter syndrome), with fewer symptoms. More than one extra copy of the X chromosome, which is rare and results in a severe form.

The glands that secrete the zootoxins are a modification of the parotid salivary gland found in other vertebrates, and are usually situated on each side of the head, below and behind the eye, and encapsulated in a muscular sheath.

Plankton are the diverse collection of organisms that live in large bodies of water and are unable to swim against a current. The individual organisms constituting plankton are called plankters. They provide a crucial source of food to many small and large aquatic organisms, such as bivalves, fish and whales.

Double, solid and ventral nerve cord is the feature of all invertebrates.

Appropriate term to designate the lifecycle of obelia is metagenesis,which means alternation of sexual and asexual life cycles.

In budding, a small part of the body of the parent organism grows out as a bud which then detaches and becomes a new organism. eg: hydra and sponges.

Starfish (and all echinoderms) start out with bilateral symmetry (that is, like us, 2 symmetrical halves) during their larval stage. However, during metamorphosis they lose this bilateral symmetry and develop some kind of radial symmetry, most often pentamerism (5 identical parts), but other symmetries are also common.

Ichthyophis is a genus of caecilians (limbless amphibians, sometimes called the Asian caecilians) found in Southeast Asia, the southern Philippines, and the western Indo-Australian Archipelago. A new species was recently discovered called Ichthyophis multicolor.

Roundworms, earthworms and liver fluke have bilateral symmetry.  These are elongated worm like organisms. 

Hydra is radially-symmetrical. The body of the organism can be divided into equal halves in any plane of axis. The tentacles radiate outward around the mouth. These type of arrangement of the tentacles gives the organisms a radial form of symmetry. Hydra is diploblastic as there are two primary germ layers as ectoderm and endoderm. The organs of the organism develops from these two germ layers. 

In Annelida and in mollusca (its modified trochophore larva i.e. veligers larva)

Such an organism exhibits no left or right sides. They have a top and a bottom surface, or a front and a back.Radial symmetry is especially suitable for sessile animals such as the sea anemone, floating animals such as jellyfish, and slow moving organisms such as starfish.