Animals which possess cleidoic egg exhibita)External fertilisation and external developmentb)External fertilisation and internal developmentc)Internal fertilisation and internal developmentd)Internal fertilisation and external developmentCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Cleidoic eggs are laid by reptiles & birds. These eggs have protective shell which is porous to air and may be flexible or calcareous (hard). Birds and reptiles exhibit internal fertilization and laid eggs contain all the food the embryo needs for external development.

Answer

Cleiodic eggs are eggs that laid by birds and reptiles .
these eggs are formed by internal fertilisation so they are laid outside the body .the young one develops inside the egg and the development outside the body so the development is external

Answer

Cleidoic egg is a type of egg that has a shell that surrounds the embryo and protects it from desiccation. This type of egg is found in reptiles, birds, and monotremes (a group of mammals that lay eggs). Animals that possess cleidoic eggs exhibit the following characteristics:

Internal fertilization: The sperm from the male is deposited inside the female's body, where it fertilizes the egg.

External development: The egg is laid outside the female's body, where it undergoes further development. The embryo is enclosed in a shell that protects it from drying out and from external predators.

Advantages of cleidoic egg:

Cleidoic eggs have several advantages over other types of eggs, including:

1. Protection: The hard shell of the egg protects the developing embryo from desiccation and from predators.

2. Nutrient-rich: The yolk of the egg provides the developing embryo with all the nutrients it needs to grow and develop.

3. Mobility: The ability to lay eggs allows animals to reproduce in a wide range of environments, including those that are not suitable for live birth.

Conclusion:

Therefore, animals with cleidoic eggs exhibit internal fertilization and external development. This is because the egg is fertilized inside the female's body, but it is laid outside the body for further development, which is protected by a hard shell.

Answer

Cleidoic egg is the term which is used to refer any closed egg of a land animal. It is also known as amniotic egg, because it occurs peculiarly in amniotes. It is laid by aves and reptiles. It involves internal fertilization because the eggs are laid on land, internal fertilization is needed and thus development occurs after the laying the eggs externally.

Answer

C

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