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it is the pores
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∙ 14y ago
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Hair and nails are the modification of what?
The epidermis.
What modification does the hair and nails have?
epidermis
What system has dermis and epidermis?
Type your answer here... the skin .. integumentary
What layer of the epidermal region has scalelike cells full of keratin that constantly flake off?
The outer layer of the epidermis is full of scale like that frequently flake off. These cells are pushed to the surface as they begin to die.
What skin structure is avascular?
The epidermis has no blood vessels.
Gaseous exchange occurs in plants through these strutures in the epidermis?
The structure in the epidermis that gaseous exchange occurs in plants is through the stomata. A stomata is a tiny opening or pore in the epidermis.
What structure is responsible for the strength of attachment between the epidermis and dermis?
epidermal ridge
Squamous cells are flattened and scalelike when mature?
true
Most common modification in gene structure in the human genome?
Deletion
What are similarities in the structures found in the epidermis with the structures found in the dermis?
There is no structural similarity between the epidermis and the dermis. They are both a part of the integumentary system but are vastly different in structure and makeup.
How does the epidermis of the root differ from the epidermis of the stem in structure and function?
"As you recall, epidermis (1) is the outermost cell layer of leaves, roots and stems. Unlike the root epidermis, stem and leaf epidermis contain stomata (more on stomata when we discuss photosynthesis). In many plants, leaf and stem epidermis is covered by a wax-like layer of cutin, which protects the plants from excessive water loss, and from pathogen attack."
What is the structure of leaf?
Leafs are flat parts of plants, which grow from stem, twig, branch, etc. They make food for the plant through a process named photosynthesis, by taking CO2 and releasing O2 to the atmosphere. You can study its structure by two ways, seeing its external parts and its internal structure (also its cells). Externally: apex (or leaf point), upper epidermis) which protect the cells), margin (the outer edge), veins (they carry water, minerals and food to the plan), lower epidermis (covered by small holes known as stomata), midrib and the petiole (or stem). Internally: cutin (a waxy surface), upper epidermis, palisade cell, chloroplast (contains chlorophyll for the photosynthesis), air space, spongy mesophyll cell (were the respiration takes place), lower epidermis, stoma (opens to allow gases in and out)
