Admin Table of Contents
What is Oviparous and viviparous?
This means oviparous animals lay eggs. These eggs develop and hatch into young individuals. In contrast, viviparous animals are born as live young individuals. Therefore, they do not lay eggs. Birds, reptiles, amphibians, most fish, insects, mollusks, arachnids, and monotremes are oviparous animals.
What provides nutrition to the developing embryo?
The correct answer is (C). Extra structure which provides nutrition to the embryo is placenta. Note:Placenta is the lifeline between the mother and the baby. It is an endocrine gland which also provides all the necessary hormones to the baby which is necessary for maintaining a healthy pregnancy.
What animals v porous?
A viviparous animal is an animal that develops an embryo inside the body of the female, resulting in the live birth of a young one. The embryo develops in special organs within the body of the female where the mother provides necessary nutrients to the embryo.
Are fish born alive or hatched?
Fish Reproduction: The eggs of fish are fertilized either externally or internally, depending on species. The female usually lays the eggs, and the embryos in the eggs develop and hatch outside her body. Each embryo develops in its own egg. The young are ‘born alive’ like most mammals.
Is dog a oviparous animal?
When the young one is fully developed, then the mother gives birth due to which the alive young one comes out from the body of the mother. For Ex:Humans, cats, dogs, lion, tiger, horse, rabbit etc. Those animals which lay eggs from which young ones are hatched later on, are called oviparous animals.
Where do people and animals get most of their nutrients?
People and animals get most of their nutrients from food. Essential nutrient s are nutrients that the human body is unable to synthesize. They must be obtained from food or water. Essential nutrients include carbohydrate s, protein s, fat s, vitamin s, and mineral s.
How does a mammalian egg start to grow?
It can start to grow early by taking up nutrients from the mother via the placenta. Thus, a mammalian egg, although still a large cell, does not have to be as large as a frog or bird egg, for example.
How do ovoviviparous animals obtain nourishment?
In such cases, nourishment is obtained from the yolk of the egg. When this yolk is depleted, the mother provides additional nutrition in the form of unfertilized eggs and uterine secretions. One of the advantages ovoviviparous animals is that, after birth, the young are competent enough to feed and defend on their own.
What is the role of nutrients in living organisms?
Nutrients help break down food to give organisms energy. They are used in every process of an organism’s body. Some of the processes are growth (building cells), repair (healing a wound), and maintaining life (breathing). Plants and other autotroph s absorb nutrients from soil and water. Autotrophs are organisms that can make their own food.