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AP Biology Unit 8N: Ecosystem Services, Succession & Global Change — practice questions — page 3

Explore 75 free Unit 8N: Ecosystem Services, Succession & Global Change questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 8N: Ecosystem Services, Succession & Global Change questions and exercises with answers

Showing questions 61–75 of 75.

Which pair of phyla is correctly matched with tissue level of organisation?Read the answer and worked solution →In the basis of animal classification, members of Porifera show which level of organisation?Read the answer and worked solution →The true coelom in many animals is formed by splitting of the mesoderm. This type of coelom formation is called:Read the answer and worked solution →Which one of the following is correctly matched?Read the answer and worked solution →An animal is called a true coelomate when its body cavity is:Read the answer and worked solution →Coelom is best defined as:Read the answer and worked solution →At which embryonic stage are the primary germ layers first clearly established in animals?Read the answer and worked solution →The outermost protective layer of the plant body is:Read the answer and worked solution →A group of cells of similar structure that work together to perform a specific function is called a:Read the answer and worked solution →Which plant tissue is responsible for ACTIVE cell division (growth)?Read the answer and worked solution →Roots grow longer because of cell division in the:Read the answer and worked solution →The increase in GIRTH (thickness) of a tree trunk is due to:Read the answer and worked solution →A scientist observes thin, rectangular, tightly packed cells forming a single outer layer on a leaf. The tissue is most likely:Read the answer and worked solution →After the tip of a young plant stem is cut off, the stem stops growing in length but new branches arise from the nodes. Which meristem allows this regrowth?Read the answer and worked solution →In SEXUAL reproduction, the offspring inherit:Read the answer and worked solution →

Worked practice questions

Which pair of phyla is correctly matched with tissue level of organisation?

  1. Porifera and Platyhelminthes
  2. Coelenterata and Ctenophora
  3. Platyhelminthes and Annelida
  4. Aschelminthes and Chordata
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Correct answer: B. Coelenterata and Ctenophora

Coelenterata and Ctenophora show tissue level of organisation. Porifera has cellular level, Platyhelminthes is organ level, and Aschelminthes onward generally show organ-system level organisation.

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In the basis of animal classification, members of Porifera show which level of organisation?

  1. Cellular level
  2. Tissue level
  3. Organ level
  4. Organ-system level
Show answer and solution

Correct answer: A. Cellular level

Poriferans are primitive metazoans in which the body is organised only at the cellular level. True tissues and organs are absent, so tissue, organ, and organ-system levels do not apply.

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The true coelom in many animals is formed by splitting of the mesoderm. This type of coelom formation is called:

  1. Enterocoely
  2. Schizocoely
  3. Gastrulation
  4. Delamination
Show answer and solution

Correct answer: B. Schizocoely

Schizocoely refers to coelom formation by splitting of mesoderm. Enterocoely, in contrast, involves outpocketing from the primitive gut.

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More Biology topics

Unit 5C: Non-Mendelian Genetics & Population TransmissionUnit 2B: Membrane Transport, Tonicity & Cell SizeUnit 8K: Human Organ Systems & HomeostasisUnit 3B: Photosynthesis, Respiration & Cellular EnergyUnit 7B: Population Genetics & Hardy-Weinberg EvolutionUnit 2G: Osmoregulation & Membrane DynamicsUnit 8R: Environmental Pollution & Organismal HealthUnit 5D: Organismal Reproduction & Life Cycles