Which Types of Embryos Have Extraembryonic Membranes

question 30

Multiple Choice

Which types of embryos have extraembryonic membranes?

• A) fish
• B) frog
• C) salamander
• D) shark
• E) mammalian

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Definitions:

Cortex

The outer layer of an organ or structure, such as the brain’s cortex involved in many higher-level brain functions, or the cortex of plants responsible for storage and transport.

Pericycle

A layer of cells in plant roots that can give rise to lateral roots and is involved in secondary growth.

Endodermis

The innermost layer of cells in the cortex of a plant root, functioning as a selective barrier that regulates the passage of substances from the soil into the vascular system.

Stele

The central part of a root or stem containing the vascular tissue of xylem and phloem, responsible for the transport of water and nutrients.