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Reptiles moved fully onto land owing to ...

Reptiles moved fully onto land owing to :
(a) tough skin
(b) amniote eggs
(c) internal fertilization
(d) all of these

A

tough skin

B

amniote eggs

C

internal fertilization

D

all of these

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question "Reptiles moved fully onto land owing to:", we need to analyze each option provided: 1. **Tough Skin**: - Reptiles have tough skin made of keratin, which is a water-resistant protein. This adaptation helps prevent water loss, allowing reptiles to thrive in a terrestrial environment. The tough skin is crucial for their survival on land. 2. **Amniote Eggs**: - The evolution of amniotic eggs was a significant factor in reptiles' ability to move onto land. These eggs have a protective shell and contain a fluid-filled amniotic sac, which allows the embryo to develop without the need for water. This adaptation enabled reptiles to reproduce away from aquatic environments. 3. **Internal Fertilization**: - Reptiles also adapted to internal fertilization, which means that fertilization occurs inside the female's body. This adaptation is essential for terrestrial life, as it eliminates the need for water during the fertilization process, allowing reptiles to reproduce in dry environments. 4. **All of These**: - Given that all the above adaptations (tough skin, amniote eggs, and internal fertilization) contributed to reptiles' ability to fully transition to land, the correct answer is option (d) all of these. ### Final Answer: (d) all of these
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