Tag: a study on animals

Questions Related to a study on animals

Salamandra atra is 

biology the life cycle of animals types of reproduction in animals oviparous and viviparous a study on animals

  1. Ovoviviparous

  2. Oviparous

  3. Sexually sterile

  4. Parthenogenetic

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Correct Option: A
Explanation:

Ovoviviparous is the method of reproduction in which animals produce eggs, but instead of laying the eggs, the eggs develop within the mother's body. The eggs hatch within the mother. After hatching, they remain inside the mother for a time and are nourished there. 

In salmonella atra, offspring after hatching undergoes metamorphosis inside the body of the mother. Offspring is delivered after complete metamorphosis. This is why they have a gestation period of two-four years.
So, the correct option is 'Ovoviviparous'.

The process by way of which a larva or miniature adult comes out of the egg membranes is known as

biology the life cycle of animals types of reproduction in animals oviparous and viviparous a study on animals

  1. Hatching

  2. Emboly

  3. Epiboly

  4. Ingression

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Correct Option: A
Explanation:

Larva comes out from the egg membranes is called as Hatching. Formation of a gastrula from a blastula by invagination is called as Emboly. cell movements that occur in the Gastrulation stage of embryonic development of some organisms are called as Epiboly and changes in the location or relative position of cells that takes place during the gastrulation stage of animal development is called as Ingression.

So the correct option is 'Hatching.'

Organisms which give birth to young ones directly are

biology the life cycle of animals types of reproduction in animals oviparous and viviparous a study on animals

  1. Oviparous

  2. Ovoviparous

  3. Viviparous

  4. Both A and B

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Correct Option: C
Explanation:

Option C viviparous

Animals that have live births because they nourish the unborn young internally with a placenta are the mammals, except the monotremes. They retain their eggs internally until they hatch then feed the young milk. These are the viviparous mammals.

A hatching egg of chick is covered by plaster of paris. It is harmful for 

biology the life cycle of animals types of reproduction in animals oviparous and viviparous a study on animals

  1. Mother

  2. Respiration

  3. Excretion

  4. None of the above

Show answer
Correct Option: B
Explanation:

Egg of the chick is porous, which allows the exchange of oxygen and carbon dioxide between the inside of the egg and the environment. If it is covered by plaster of paris, then pores will be closed which can lead to several respiratory problems.
So, the correct answer is option B.