Rods and Cones are the photoreceptors, useful in providing vision to the eyes. Rods provide vision during dim light or night also known as scotopic vision, whereas cones provide vision during day time or at bright light also known as photopic vision. Secondly, rods do not support the colour vision, but cones are capable of colour vision, with high spatial acuity — the level of the light where both the types of work, is called a mesopic vision. Eyes are one of the primary sense organs found … [Read more...]
Difference Between Oestrogen (Estrogen) and Progesterone
Oestrogen or estrogen is the female steroid hormone known for the development of the female reproductive system, while progesterone is also another type of female steroid hormone known for releasing corpus luteum and supports the pregnancy. These are the types of steroids hormones and are categorized under two category which are corticosteroids and sex steroids. Among which the mineralocorticoids and glucocorticoids are the are the types corticosteroids, while oestrogen or estrogen, … [Read more...]
Difference Between Hibernation and Aestivation (Estivation)
Hibernation and aestivation are the forms of sleeping states which occurs under two different climate conditions. Both of them are extended forms of torpor. Sometimes, the animals fall asleep to survive in harsh and extreme environments. This sleeping pattern may vary as per the climate and the growth phases of the organism. The primary difference between hibernation and aestivation is that the former is winter sleep while the latter is summer sleep. During extremely low temperatures, … [Read more...]
Difference Between Oviparous and Viviparous Animals
We can classify the animals into two categories- Oviparous and Viviparous, based on how they produce their new generation. Oviparous animals are those which lay either fertilized or unfertilized eggs that hatch to give rise to a new young one. Whereas the viviparous are the animals that directly give birth to their younger ones. In oviparous animals, the development of the zygote occurs outside the body. The developing embryo takes the nutrients from the Yolk present inside the egg. In … [Read more...]
Difference Between Amphibians and Reptiles
Both the amphibians and reptiles belong to the phylum chordate, thereby having well defined vertebral columns. But still, they greatly differ in their living habits, structure, reproduction cycle and even habitat. The class amphibians comprise the animals like toads, frogs, and salamanders. They can survive easily on land and water as they have optional gills or porous skin to breathe along with lungs. Whereas the class Reptilia include snakes, lizards, and turtles. They are strictly … [Read more...]
Difference Between Male and Female Reproductive System
The functional and most significant difference in the male and female reproductive system is that male reproductive system only produces sperms and delivers to the female reproductive system. On the other hand, the female reproductive system is designed to produce a baby and promote its development. Reproduction is the process of fusion of male and female gamete, to produce their species. While the organs of an individual body involved in this process, together known as the reproductive … [Read more...]
Difference Between Internal and External Fertilization
Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast, External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies. Internal fertilization is followed by mammals, birds, while external fertilization is supported by mostly aquatic animals and few amphibians. We all are aware of the word fertilization, which defines … [Read more...]
Difference Between Arteries and Veins
Arteries carry oxygenated blood away from the heart, these are the thick-walled muscular tube, while Veins carry deoxygenated blood towards the heart. Though both have the exception of the pulmonary artery and vein, as here the system get opposite and the pulmonary artery carries the deoxygenated blood, and pulmonary vein carries oxygenated blood. Among the two types of circulatory system - Open circulation and Closed circulation. In vertebrates, closed type of circulatory system is found, … [Read more...]
Difference Between Human Sperm and Ovum
Sperm is the male gamete, produced in the testis of a male, while Ovum is the female gamete, produced in the ovary of a female. Ovum, also known as egg cell and is said to be the largest cell in the female body. On the contrary Sperm cells is the smallest cell in the male body. Egg cell and sperm cells differ in many ways, which can be their origin, nature, composition, and purpose for existence. Though both play an important role at the time of human reproduction process, where the … [Read more...]
Difference Between Bones and Cartilage
Both bones and cartilages are connective tissues. But they vary in their structures and functions. Bones on one hand are harder, solid and rigid structures. Their primary function is to provide structure and stability to the body. They also protect the internal organs from getting injured. While the cartilages are soft and flexible tissues. They are present between two bones to support joints. Also, they reduce the impact of friction while moving. The cells of bones are osteocytes and … [Read more...]