Best Zoology Quizzes Online

Not just huge animals, whether dangerous or not, but even insects are essential for the world. Zoology today has seen several changes in the adaptability, suitability, and interests that have to lead to ample insects today all around the world. One o

Deoxyribonucleic acid or DNA is a polymer of deoxyribonucleotides and it is usually double-stranded. It has a double helix structure and it acts as the genetic material in most organisms. DNA carries genetic information.DNA structure is often divided

Genomatic mutations are due to the change in a number of chromosomes. There are two types of genomatic mutations one is polyploidy and another one is unevenploidy.Euploidy/ polyploidy condition is obtained by the addition of chromosome in the complet

Gene mutations are caused by a change in the sequence of a DNA segment representing a gene. The smallest portion of DNA which undergoes mutation is called muton. Every organism has certain genes that mutate more frequently and some genes which suppre

Wildlife includes all wild animals which cannot be domesticated and all wild plants which cannot be cultivated. It is our asset that helps us in maintaining equilibrium, balance nature, used commercially to earn foreign money and provides means of sp

Man has emerged as the wisest in the Supreme being of nature with their brain qualifying as so far the best achievement of the revolution. The evolution of man was possible because ape-like and sister had migratory habits. Most of the fossils of prim

Geological Time Scale is the calendar of earth's past history. History of the earth has been divided into a number of major divisions called eras. The eras are subdivided into periods that are further divided into epochs. The age of the earth is abou

It is believed that about 375 million years ago, the whole landmass was one piece called Pangaea. Due to geographical changes, this Landmark separated broke off and drifted apart by major barriers of sea, deserts or mountains. All these regions had t

The evolution of life is a continuous biological process. There is a basic principle of evolution and different theories have been put forward to explain how evolution has occurred. Principles of evolution are evolution is a very complex, reversible,

The term evolution was coined by Herbert Spencer. Evolution is Descent with modification basically it is the continuous genetic variation of adaption through generations. The present-day complex living organisms have evolved from the earlier simpler

The most accepted view regarding the origin of the solar system is the nebular hypothesis. According to this hypothesis about 10000 to 20 thousand million years ago, there was a condensed mass of cosmic material called ylem that exploded due to the i

Active transport is against the concentration gradient and is more rapidly than passive transport. Energy is utilized for transport and it is solute specific. Khwaish carries particles are proteins. There are two ways of active transport first one is

Placentation is invariably associated with the viviparity of organism. It is the only organ in the animals formed by the temporary connection of the tissue-derived from two individuals mother and foetus. Part of the placenta-derived from the foetus i

The presence of extraembryonic membrane is a characteristic of amniotes as their development occurs on land either inside the egg or uterus whereas in amniotes their development occurs in water so they do not face the problem of desiccation, the supp

Fertilization is the fusion of male and female gametes to form the zygote. It is highly species-specific. The type of fertilization varies in different animals but the basic facts remain the same. Basically there are two types of fertilization first

Gametogenesis is the process of the formation of haploid gamete from diploid gonads. Gametes are formed by specialized meiosis/reductional division. Although both sperm and OVA are very dissimilar morphologically yet both comprise similar phases of s

Osmoregulation is the regulation of water and salt content of the body. There are two extreme patterns of responses of an organism to the osmotic condition of the environment. Animals that are osmotically labile change the osmolarity of body fluids a

Homeostasis is the ability of an organism to maintain a constant steady-state with the external environment. The organism employs various mechanisms to attain a steady-state. The science of control mechanism is called cybernetics. All non-chordates,

The neuron is the structural and functional unit of the nervous system. These are specialized excitable cells of the body capable of transmitting for conducting excitation along their membrane. They also receive stimuli and transfer them from one to

The term pheromones have been derived from the two Greek words pherein- to carry and hormone- to excite. These are the chemical substances released by one organism that render some reaction in the other organisms of the same species. These are the se

Cellular respiration is the energy-releasing, enzymatically controlled, a catabolic process that involves a stepwise oxidative breakdown of organic substances inside the living cells. Respiration provides and biochemical intermediate. It is used for

Enzymes are colloidal proteins having catalytic properties. Buchner was awarded Nobel Prize for isolating enzyme zymase from yeast. Sumner catalyzes the first enzyme urease from jack beans. Some similarities between enzyme and catalyst -both remain u

Protoplasm is a slimy, viscous, living, colloidal substance distinguish into parts of cytoplasm and nucleoplasm. Protoplasm is composed of 75 to 95% water, 5 to 25% organic and inorganic substances. Organic substances are carbohydrates, proteins, fat

The metabolic reaction occurring in animal body produces certain nitrogen containing material as ammonia, urea, uric acid etc. These materials are toxic to the body so they must be removed. This elimination of nitrogenous waste products from the ani

Circulation of body fluids is called circulatory system/internal transport. The substance moved into and out of the body and distance traveled by them increases with the increase in size and complexity of the organism. Therefore, simple diffusion do