M4 ANIMAL FEATURES

A tissue is a group of cells that have a similar structure and that function together as a unit. Which of the following animals DOES NOT form tissues?

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• 
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Two of the organisms in this selection display radial symmetry. Which two?

• W and X

• W and Y

• W and Z

• Y and Z

Which of the option correctly labels the axes of this fish?

• A

• B

• C

• D

Which of the following correctly labels the anatomical parts of the animals?

• A

• B

• C

• D

Which process in the early development of an animal is being depicted in this image?

• Annulation

• Gastrulation

• Cleavage

• Blastulation

The image shows transverse sections of diploblastic and triploblastic gastrula. Which option describes the names of the germ layers correctly?

• A

• B

• C

• D

In humans the ectoderm germ layer eventually develops into all of the following structures except one. Which one?

• Skin

• Teeth

• Nervous system

• Skeletal muscle

Triploblasts, with their three germ layers can be further divided into three groups depending on whether ther have a body cavity, a fake body cavity or no body cavity at all. Which of the options labels them correctly? (hint pseudo means fake; coel means cavity)

• X - coelomate

  Y - pseudocoelomate

  Z - acoelomate

• X - acoelomate

  Y - pseudocoelomate

  Z - coelomate

• X - pseudocoelomate

  Y - acoelomate

  Z - coelomate

• X - pseudocoelomate

  Y - coelomate

  Z - acoelomate

The figure shows the bodyplan of a hydra (a cnidarian related to the jellyfish). Which of the following terms describes the organisation of its germ layers?

• Coelomate

• Acoelomate

• Pseudocoelomate

• Diploblast