Photo AI

This question is about plant transport systems - AQA - GCSE Biology Combined Science - Question 6 - 2021 - Paper 1

Question icon

Question 6

This-question-is-about-plant-transport-systems-AQA-GCSE Biology Combined Science-Question 6-2021-Paper 1.png

This question is about plant transport systems. 06.1 Describe how water is transported from the soil to the atmosphere through a plant. 06.2 Dissolved sugars are m... show full transcript

Worked Solution & Example Answer:This question is about plant transport systems - AQA - GCSE Biology Combined Science - Question 6 - 2021 - Paper 1

Step 1

Describe how water is transported from the soil to the atmosphere through a plant.

96%

114 rated

Answer

Water is absorbed from the soil by osmosis through the root hair cells. Once inside the plant, it travels through the xylem vessels upwards to the leaves. From the leaves, water is lost through small openings called stomata into the atmosphere, a process driven by evaporation and transpiration.

Step 2

What is the name of the process that moves dissolved sugars through phloem tissue?

99%

104 rated

Answer

The process that moves dissolved sugars through phloem tissue is called translocation.

Step 3

Explain one way sieve tube cells are specialised for their function.

96%

101 rated

Answer

Sieve tube cells have pores in their end walls, allowing for the free movement of dissolved sugars and food contents between cells. This structural adaptation maximizes the efficiency of sugar transport in the plant.

Step 4

What does the structure of the companion cells suggest about the process that moves dissolved sugars through the phloem tissue? Give a reason for your answer.

98%

120 rated

Answer

The structure of the companion cells suggests that the movement of dissolved sugars through the phloem is an active process that requires energy. This is indicated by the numerous mitochondria present in companion cells, which provide ATP for active transport mechanisms.

Step 5

Describe why it is important that dissolved sugars are moved both upwards and downwards in a plant.

97%

117 rated

Answer

Moving dissolved sugars both upwards and downwards is crucial for plant functioning. Sugars produced in the leaves during photosynthesis are transported to the roots for storage and growth. Furthermore, sugars sent downwards also supply energy for respiration necessary for cellular functions throughout the plant, ensuring all tissues receive the nutrients they need.

Join the GCSE students using SimpleStudy...

97% of Students

Report Improved Results

98% of Students

Recommend to friends

100,000+

Students Supported

1 Million+

Questions answered

Other GCSE Biology Combined Science topics to explore

;