specialised cells

Question 1

Name 3 specialised cells

Answer 1

1. Red blood cell
2. Root hair cell
3. Muscle cell

Question 2

What are their functions

Answer 2

RBC: transport 02 to all parts of the body
RHC: absorb water/ mineral salts from soil
MC: Cause muscle contractions to produce movement

Question 3

What are the adaptions of RBC

Answer 3

contains haemoglobin (transport 02)
-circular, biconcave shape (inc surface area-to-vol-ratio which increase rate of 02 diffusion)
_-flexible can squeeze through small blood vessel
-Nucleus is absent

Question 4

What are the adaptations of RHC

Answer 4

Long and narrow root extention
=inc surface area-to-vol ratio of cell increase rate of absorbtion of water/mineral salts

Question 5

What are the adaptions if MC

Answer 5

contains many mitochondria which provide energy for muscle contractions