tissues and organs in plants

Question 1

what are the specialised cells in multicellular plants organised into?

Answer 1

organs and tissues

Question 2

epidermal tissues…..

Answer 2

epidermal tissues cover the surfaces and protect them. these cells often secrete a waxy substance that waterproofs the surface of the leaf.

Question 3

palisade mesohyll tissue……

Answer 3

palisade mesophyll tissue contains lots of chloroplasts, which carry out photosynthesis.

Question 4

spongy mesophyll tissue…….

Answer 4

spongy mesophyll tissue contains some chloroplasts for photosynthesis but also has big air spaces and a large surface area to make the diffusion of gases easier.

Question 5

xylem and phloem…….

Answer 5

xylem and phloem are the transport tissues in plants. xylem carry water and dissolved mineral ions from the roots up to the leaves and phloem carry dissolved food from the leaves around the plants.

Question 6

the meristem tissue…..

Answer 6

the meristem tissue at the growing tips of roots and shoots is made up of rapidly dividing plant cells that grow and differentiate into all the other cell types needed.

Question 7

how are plant organs formed?

Answer 7

plant tissues are arranged to form organs.

Question 8

give 3 plant organs

Answer 8

leaves,stems and roots

Question 9

how is a plant organ system formed?

Answer 9

when the whole body of the plant-the roots, stem and leaves form an organ system for the transport of substances around the plant.

Question 10

what are plant tissues?

Answer 10

plant tissues are collections of cells specialised to carry out specific functions.