Biology Quiz 8
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- Question 1 of 25
Which of the following is an endemic species?
An endemic species refers to a species that is native to where it is found. A species can be endemic to a particular small geographical area, such as a single island, or to a larger area, such as a continent. India has nine hornbill species, of which four are found in the Western Ghats: Indian Grey Hornbill (endemic to India), the Malabar Grey Hornbill (endemic to the Western Ghats), Malabar Pied Hornbill (endemic to India and Sri Lanka) and the widely distributed but endangered Great Hornbill.
- Question 2 of 25
Hypothermia occurs due to loss of excessive heat from the body due to sudden low body temperature in:
Hypothermia occurs in human beings. It occurs when the human body loses heat faster than it can produce heat, causing a dangerously low body temperature. Normal body temperature is around 98.6°F (37°C). Hypothermia occurs as temperature falls below 95°F (35°C).
- Question 3 of 25
DPT vaccine is administered to prevent diseases like:
DPT is a combination vaccine to protect against Diphtheria, Tetanus and Pertussis (whooping cough).
- Question 4 of 25
The disease that has been eradicated from the world is:
Smallpox has been eradicated from the world. It was a serious infectious disease caused by the variola virus. World Health Organization (WHO) declared smallpox eradicated in 1980.
- Question 5 of 25
The hormone used as an oral contraceptive is:
Oral contraceptives (birth control pills) are used to prevent pregnancy. Estrogen and progesterone are two female sex hormones. Combinations of estrogen and progesterone work by preventing ovulation (the release of eggs from the ovaries).
- Question 6 of 25
Pick out the correct match:
A raw yolk from one standard, large egg provides 2.70 g of protein 4.51 g of fat.
- Question 7 of 25
In dicots, the pollen grains possess:
Monocot and dicot plants have different pollen structures. In a monocot, the pollen grain produced by the flower has a single furrow or pore through the outer layer. In a dicot plant, the pollen grain has three furrows or pores.
- Question 8 of 25
A drug which helps to reduce anxiety and brings about calmness is:
Tranquilizer is a drug which is designed for the treatment of anxiety, fear, tension, agitation, and disturbances of the mind, specifically to reduce states of anxiety and bring about calmness.
- Question 9 of 25
A keel is absent in:
The huge muscles that power the wings attach to a flat part of the breastbone called the keel. Some flightless birds, including ostriches, do not have a keel.
- Question 10 of 25
Broad-spectrum antibiotics are produced by:
Broad-spectrum antibiotics are active against a wider number of bacterial types. Narrow-spectrum antibiotics are active against a select group of bacterial types. Streptomycetes produce over two-thirds of the clinically useful antibiotics of natural origin.
- Question 11 of 25
The pigment that protects plants from the harmful effects of ultraviolet rays is:
Carotenoids protect the plant from UV (ultraviolet) damage. Carotenoids are pigments in plants, algae, and photosynthetic bacteria. These pigments produce bright yellow, red, and orange colors in plants. Carotenoids are responsible for the quenching of light and protect cells from damages caused by light and superoxide radicles.
- Question 12 of 25
Glycogen, starch and cellulose are polymers of:
Starch, glycogen and cellulose are all polymers of glucose. They differ in the type of glucose present and the bonds which link the glucose monomers together.
- Question 13 of 25
Black death is:
Black Death was a devastating global epidemic of bubonic plague that struck Europe and Asia in the mid-1300s.
- Question 14 of 25
Certain desert lizards excrete their wastes in dry form. This serves as a means of:
Certain desert Reptiles (lizards) excrete their wastes in dry form. This serves as a means of adaptation of the organism to the environment. Reptiles, in general, excrete urates and retain as much fluid as possible. This adaptation is essential for those animals living in desert environments.
- Question 15 of 25
Kidney can be taken from a dying person who has the:
Kidney can be taken from a dying person who has the cessation of neurological function only. Tissues such as cornea, heart valves, skin, and bone can be donated in case of natural death but vital organs such as heart, liver, kidneys, intestines, lungs, and pancreas can be donated only in the case of ‘brain death’.
- Question 16 of 25
There is no life on Moon because it has no:
There is no life on Moon because it has no water. Water is essential to life because all life forms are dependent on it. Life began in the presence of water. Almost all the reactions of a cell occur in the presence of water.
- Question 17 of 25
Which of the following is meant for the ex-situ conservation of various species?
Germplasm bank is meant for the ex-situ conservation of various species. Ex-situ conservation is the technique of conservation of all levels of biological diversity outside their natural habitats through different techniques like zoo, captive breeding, aquarium, botanical garden, gene bank and Germplasm banks.
- Question 18 of 25
Drying oils contain a fairly large proportion of:
Drying oils contain a fairly large proportion of unsaturated fatty acids. They are liquid oils (triglycerides) that cross-link and solidify by reaction with atmospheric oxygen. In order for this to happen, the fatty acid part of the triglyceride must contain at least two centers of unsaturation (double bonds) on one molecular chain.
- Question 19 of 25
The infective stage of malaria is:
The human-infective stage of malaria is sporozoites from the salivary gland of an infected mosquito. The sporozoites grow and multiply in the liver to become merozoites.
- Question 20 of 25
The red, orange and yellow colours of leaves are due to:
Carotenoids are pigments in plants, algae, and photosynthetic bacteria. These pigments produce bright yellow, red, and orange colors in plants, vegetables, and fruits.
- Question 21 of 25
Polar-bears hold cures for:
In the fasting state, bears begin urea recycling and start losing fat tissue, although they retain their lean body mass. Such a medicine might be effective in treating obesity, as well as type II diabetes associated with it.
- Question 22 of 25
The disease that kills more people than lung cancer as a consequence of air pollution is:
Emphysema kills more people than lung cancer as a consequence of air pollution. It is a condition that involves damage to the walls of the air sacs (alveoli) of the lung. Alveoli are small, thin-walled, very fragile air sacs located in clusters at the end of the bronchial tubes deep inside the lungs.
- Question 23 of 25
Photosynthetic vesicle found in bacteria is called a:
A photosynthetic vesicle found in bacteria is called a chromatophore. In some forms of photosynthetic bacteria, a chromatophore is a coloured, membrane-associated vesicle used to perform photosynthesis. Chromatophores contain bacteriochlorophyll pigments and carotenoids.
- Question 24 of 25
Saliva helps in the digestion of:
Saliva helps in the digestion of starch (complex carbohydrates). It contains special enzymes called amylase that help digest the starches in food. Amylase breaks down starches into sugars, which the body can more easily absorb.
- Question 25 of 25
Iodoform is used as an:
Iodoform, also called triiodomethane, is used as an antiseptic. It is a yellow, crystalline solid belonging to the family of organic halogen compounds, used as an antiseptic component of medications for minor skin diseases.