Grade 11 Exam > Grade 11 Videos > Biology for Grade 11 > Diploblastic & Triploblastic Organisation
Diploblastic & Triploblastic Organisation Video Lecture | Biology for Grade 11
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FAQs on Diploblastic & Triploblastic Organisation Video Lecture - Biology for Grade 11
| 1. What is diploblastic organization? |  |
Ans. Diploblastic organization refers to the body plan of certain animals that have two primary germ layers during embryonic development. These germ layers are the ectoderm and endoderm, which give rise to specific tissues and organs. Examples of diploblastic animals include jellyfish and sea anemones.
| 2. What is triploblastic organization? | |
Ans. Triploblastic organization refers to the body plan of animals that have three primary germ layers during embryonic development. These germ layers are the ectoderm, mesoderm, and endoderm, which give rise to a wider range of tissues and organs. Most animals, including humans, exhibit triploblastic organization.
| 3. What are the differences between diploblastic and triploblastic organizations? | |
Ans. The main difference between diploblastic and triploblastic organizations lies in the number of germ layers present during embryonic development. Diploblastic animals have two germ layers (ectoderm and endoderm), whereas triploblastic animals have three germ layers (ectoderm, mesoderm, and endoderm). This difference in germ layers allows triploblastic animals to have a more complex body structure and a wider range of tissue types.
| 4. How does diploblastic organization limit the complexity of body structure? | |
Ans. Diploblastic organization limits the complexity of body structure due to the absence of a mesoderm layer. The mesoderm in triploblastic animals gives rise to various tissues, such as muscles, bones, and connective tissues, which are essential for complex body structures. Without a mesoderm, diploblastic animals have simpler body plans and lack certain tissue types found in triploblastic animals.
| 5. Which types of animals exhibit diploblastic organization? | |
Ans. Diploblastic organization is primarily observed in animals belonging to the phylum Cnidaria, which includes jellyfish, sea anemones, and corals. These animals have a relatively simpler body structure and lack certain advanced tissue types found in triploblastic animals.
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