Cell Organisation

Question 1

How are cells organised into tissues

Answer 1

Due to adhesion molecules on cell surface membranes which help cells to recognise other cells like themselves and stick to them, exposed section of recognition proteins bind to complementary proteins on the adjacent cell

Question 2

What is a tissue

Answer 2

A group of specialised cells with similar structure working together to carry out one function

Question 3

What is an organ and example

Answer 3

A group of tissues working together to carry out one function eg muscle, nerve and epithelium work together in the heart

Question 4

What is an organ system and example

Answer 4

A group of organs working together to carry out a particular function eg the circulatory system

Question 5

Where are stem cells found in plant

Answer 5

In meristems in roots and shoots

Question 6

When do stem cells in meristem become specialised

Answer 6

When plants start to flower cells in meristem become specialised to form the organs that make up the flower

Question 7

What are hermaphrodite flowers and the four structures they typically have

Answer 7

Those that have female and male structures, typically have sepals, petals, male stamens and female carpels