Various tissues and or organs that arise in animals develop from different layers called?

Gastrulation leads to the formation of the three germ layers that give rise during further development to the different organs in the animal body. This process is called organogenesis. Organs develop from the germ layers through the process of differentiation.

1. What is the term given to the animals which arise from two germ layers only?
2. What tissues and organs develop from the endoderm?
3. How many tissue layers are there as animals develop?
4. What types of tissues organs arise from the mesoderm?
5. In which of the following stages of development do tissues develop into the endoderm ectoderm and mesoderm germ layers?
6. What organs eventually develop from the ectoderm cell layer?
7. What does the endoderm layer become?
8. Which one of the following hematopoietic tissues or organs develops from endoderm?
9. What are connective tissues?
10. Do all animals have tissue?
11. Which of the following is a group of animals with true differentiated tissues?
12. What are embryonic tissues?
13. How are tissues and organs formed?
14. How are tissue membranes different from tissues?
15. What are the 4 main types of connective tissues?

What is the term given to the animals which arise from two germ layers only?

Some animals, like cnidarians, produce two germ layers (the ectoderm and endoderm) making them diploblastic. Other animals such as bilaterians produce a third layer (the mesoderm) between these two layers, making them triploblastic.

What tissues and organs develop from the endoderm?

Endoderm cells give rise to certain organs, among them the colon, the stomach, the intestines, the lungs, the liver, and the pancreas.

How many tissue layers are there as animals develop?

Many, but not all, animals produce three embryonic tissue tissue layers (shown in Table 1) as they develop: the endoderm, mesoderm, and ectoderm. Some animals, most notably sponges, lack these tissue layers. Cnidarians (a group including coral and jellyfish) have only two of these layers, and are termed diploblastic.

What types of tissues organs arise from the mesoderm?

The mesoderm gives rise to the skeletal muscles, smooth muscle, blood vessels, bone, cartilage, joints, connective tissue, endocrine glands, kidney cortex, heart muscle, urogenital organ, uterus, fallopian tube, testicles and blood cells from the spinal cord and lymphatic tissue (see Fig. 5.4).

In which of the following stages of development do tissues develop into the endoderm ectoderm and mesoderm germ layers?

Gastrulation. During gastrulation, the embryo develops three germ layers (endoderm, mesoderm, and ectoderm) that differentiate into distinct tissues.

What organs eventually develop from the ectoderm cell layer?

In vertebrates, ectoderm subsequently gives rise to hair, skin, nails or hooves, and the lens of the eye; the epithelia (surface, or lining, tissues) of sense organs, the nasal cavity, the sinuses, the mouth (including tooth enamel), and the anal canal; and nervous tissue, including the pituitary body and chromaffin ...

What does the endoderm layer become?

Cells in the endoderm layer become the linings of the digestive and respiratory system, and form organs such as the liver and pancreas.

Which one of the following hematopoietic tissues or organs develops from endoderm?

The endoderm forms the lungs and the gastrointestinal tract (which includes the liver and pancreas); the mesoderm generates the kidneys, bones, blood, muscle and heart; and the ectoderm differentiates to form numerous tissues including the nervous system and skin.

What are connective tissues?

Tissue that supports, protects, and gives structure to other tissues and organs in the body. ... Connective tissue is made up of cells, fibers, and a gel-like substance. Types of connective tissue include bone, cartilage, fat, blood, and lymphatic tissue.

Do all animals have tissue?

All animals are eukaryotic, multicellular organisms, and almost all animals have a complex tissue structure with differentiated and specialized tissues. Most animals are motile, at least during certain life stages.

Which of the following is a group of animals with true differentiated tissues?

The current understanding of evolutionary relationships between animal, or Metazoa, phyla begins with the distinction between “true” animals with true differentiated tissues, called Eumetazoa, and animal phyla that do not have true differentiated tissues (such as the sponges), called Parazoa.

What are embryonic tissues?

Any tissue that arises from the fertilization of an ovum and has not become differentiated or specialized.

How are tissues and organs formed?

The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.

How are tissue membranes different from tissues?

Tissue is a group of cells that have similar structure and that function together as a unit. ... Body membranes are thin sheets of tissue that cover the body, line body cavities, and cover organs within the cavities in hollow organs.

What are the 4 main types of connective tissues?

Connective tissues are classified into four classes: BLOOD, BONE, CARTILAGE, CONNECTIVE TISSUE PROPER.