Question

1. The [v] includes somites, which give rise to [w). The ectoderm includes the [x), which gives rise to the lyl. The [z] gives rise to the gut. Answer Choices: endoderm mesoderm muscles . ectoderm brain and spinal cord e gut neural tube . somites . notochord Which of the following land plant characteristics are NOT found in green algae? MULTIPLE ANSWERS CAN BE SELECTED 2. a. embryo retention b. cell walls made of cellulose c. presence of nucleus d. chlorophyll a and chlorophyll b e. vascular tissue f. cuticle

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Answer 1

1. The (V) includes somites which give rise to (w). The ectoderm includes the (x) which give rise to (y). The (Z) gives rise to the gut.

• Somites are nothing but patches of mesoderm in the vertebrate developing embryo.
• Somites upon development give rise notochord, vertebrate, skeletal muscle of limbs and trunk and dermis of skin.
• Ectoderm gives nervous layer and epidermis of skin.
• Endoderm gives intestinal tract and respiratory tracts.
• The (middle germ layer, mesoderm) includes somites which give rise to (muscles, notochord). The ectoderm includes the (neural tube) which give rise to ( spinal cord and brain). The (endoderm) gives rise to the gut.