Do beings of the class Reptilia have direct or indirect development?

Do beings of the class Reptilia have direct or indirect development?
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In beings of the class Reptilia the embryonic development is direct. So there is no larval stage.
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Class Reptilia identity card. How are they characterized according to examples of representing beings, basic morphology, skin, respiration, circulation, nitrogen waste, thermal control and types of reproduction?

Description : Class Reptilia identity card. How are they characterized according to examples of representing beings, basic morphology, skin, respiration, circulation, nitrogen waste, thermal control and types of reproduction?

Last Answer : Examples of representing beings: snakes, turtles, crocodiles, lizards, dinosaurs (extinct). Basic morphology: tetrapods, some with carapaces (like turtles). Skin: impermeable keratinized, corneous ... sexual, internal fecundation, shelled eggs with extraembryonic membranes. Class Aves - Q&A Review

Concerning the maintenance of body temperature how do beings of the class Reptilia classify?

Description : Concerning the maintenance of body temperature how do beings of the class Reptilia classify?

Last Answer : Like fishes and amphibians, beings of the class Reptilia are heterothermic animals (also known as poikilothermic, or ectothermic), i.e., they are not able to control by themselves their body temperature and thus they depend on external warm sources (mainly the sun).

Compared to amphibians what are the two reproductive novelties of beings of the class Reptilia for the survival in dry environments?

Description : Compared to amphibians what are the two reproductive novelties of beings of the class Reptilia for the survival in dry environments?

Last Answer : Compared to amphibians the two main reproductive innovations of beings of the class Reptilia for the terrestrial habitat are internal fecundation and shelled eggs. Image Diversity: reptilian egg

How is reproduction done in beings of the class Reptilia?

Description : How is reproduction done in beings of the class Reptilia?

Last Answer : These beings reproduce sexually through internal fecundation by means of copulation between male and female individuals. They lay eggs with shell and extraembryonic membranes. The embryo thus develops ... there are also ovoviviparous reptiles that retain the egg within the body until hatching).

Which is the type of nitrogen waste eliminated by beings of the class Reptilia?

Description : Which is the type of nitrogen waste eliminated by beings of the class Reptilia?

Last Answer : These beings excrete mainly uric acid. This substance is less toxic than ammonia and it can be kept stored for a longer time inside the individual, including within eggs. In addition uric acid is practically insoluble and it depends less on water to be eliminated. Image Diversity: uric acid molecule

Do beings of the class Reptilia perform gas exchange in the same way amphibians do?

Description : Do beings of the class Reptilia perform gas exchange in the same way amphibians do?

Last Answer : These beings do not have permeable skin so they do not make cutaneous respiration like amphibians do. Just like in birds and in mammals, their respiration is pulmonary.

Compared to amphibians what is an example of evolutionary novelty present in beings of the class Reptilia against the loss of water through the skin?

Description : Compared to amphibians what is an example of evolutionary novelty present in beings of the class Reptilia against the loss of water through the skin?

Last Answer : The reptile skin is keratinized and impermeable to water while the amphibian skin is permeable. The skin impermeability made impossible the cutaneous gas exchange performed by amphibians and respiration became dependent on internal organs like airways and lungs.

What is the difference between direct and indirect development? -Biology

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Is the mammalian embryonic development direct or indirect?

Description : Is the mammalian embryonic development direct or indirect?

Last Answer : In mammals the embryonic development is direct, without larval stage.

Is the embryonic development in birds direct or indirect?

Description : Is the embryonic development in birds direct or indirect?

Last Answer : The embryonic development is direct, there is no larval stage.

Is the embryonic development in earthworms direct or indirect?

Description : Is the embryonic development in earthworms direct or indirect?

Last Answer : In earthworms there is no larval stage, so the embryonic development is direct.

Write the distinguishing features of class Reptilia.

Description : Write the distinguishing features of class Reptilia.

Last Answer : Write the distinguishing features of class Reptilia.

What is an example of a hypothesis which may explain why there is not a big representation of the class Reptilia found in polar regions?

Description : What is an example of a hypothesis which may explain why there is not a big representation of the class Reptilia found in polar regions?

Last Answer : Beings of the class Reptilia are abundant and more diverse in hot climate regions and they are rare in intensely cold regions like close to the earth poles. This is explained because these animals are ... active during the day, a period when they can use the sun heat to warm their bodies.

Mention the characteristics of class Reptilia.

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Last Answer : a) Reptiles are the first true terrestrial vertebrates. b) Most of them are land forms and some are adapted for life in water. c) The body is elongated, divided into head, ... are oviparous animals. Fertilization is internal but development is external. Ex: Turtles, tortoise, lizards, snakes

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Last Answer : Characteristics: - i) Members of this groups are called reptiles. ii) Most of animals of this group are terrestrial. A few live in water. iii) They are also called crawlers. iv) ... garter and copper head keep their shelled eggs in their body, which hatch inside the body. 

The characteristics of Class Reptilia are (a) body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca (b) fresh water animals with bony endoskeleton, air- bladder to regulate buoyancy (c) marine animals with cartilaginous endos- keleton, body covered with placoid scales (d) body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.

Description : The characteristics of Class Reptilia are (a) body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into ... dry and cornified skin, scales over the body are epidermal, they do not have external ears.

Last Answer : (d) body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.

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