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(a)(i) Define transport. (ii) Explain the necessity of transport in plants and animals. (b) (i) Describe the structure and function of root hair...

a) i) Define transport.

ii) Explain the necessity of transport in plants and animals.

b) i) Describe the structure and function of root hair.

ii) State ways in which the root hairs are adapted to their functions.

Answers

Felix
a) i) Transport is the Movement of substances from one pan of the body to another.

ii) -make nutrients move from one point to another
-movement of respiratory gases i.e. oxygen and carbon IV oxide
-elimination of metabolic wastes
-movement of hormones
-movement of water
-movement of salts
-movement of enzymes

b) i) -root hairs are found near the root tip
-they are cells with elongated ?nger-like projections which are in contact with soil particles.
-they are permeable to water and mineral salts hence are used to absorb Water and mineral salts.
-Their large number offers a large surface area for absorption of water and mineral salts.

ii) State ways in which the root hairs are adapted to their functions

-the root hair is long/narrow/numerous to increase surface area for absorption of water and mineral salts.
-many mitochondria in cytoplasm to supply energy for active transport of mineral salts.
-are thin walled to speed up rate of absorption of Water and mineral salts.
Anganifelix answered the question on May 13, 2018 at 15:46

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