Question 1

Which feature allows RBC to increase its surface area to volume ratio so that oxygen can diffuse in and out of the rbc at a faster ?rate.

Accepted Answer

It has a biconcave shape.

Answer

Lack of organelles like nucleus.

Answer

It has a haemoglobin.

Question 2

What is the function of the red blood cell?

Accepted Answer

To transport oxygen from the lungs to all parts of the body.

Answer

To transport carbon dioxide.

Answer

To absorb water and dissolved mineral salts.

Answer

To transport water and dissolved mineral salts.

Question 3

What is the function of the root hair cell?

Accepted Answer

To absorb water and dissolved mineral salts from the soil.

Answer

To transport carbon dioxide.

Answer

To transport water and dissolved mineral salts.

Answer

To transport oxygen.

Question 4

What is the function of the xylem?

Accepted Answer

To transport water and dissolved mineral salts from the soil.

Answer

To absorb water and dissolved mineral salts.

Answer

To transport carbon dioxide.

Answer

To transport oxygen.

Question 5

Why do xylem cells have lignin on its cell wall?

Accepted Answer

To strengthen the vessel and prevents it from collapsing thus providing  mechanical support.

Answer

To increase surface area so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Answer

To provide  a continuous lumen with no cross walls so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Answer

It has a long and narrow root hair so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Question 6

Which of following correctly shows how the root hair cell is adapted to carry out its function?

Accepted Answer

It has a long and narrow root hair so that it can absorb water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Answer

It has a continuous lumen with no cross walls so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Answer

It has a haemoglobin so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Answer

It has a lignin so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Question 7

Which feature allows RBC to transport more oxygen?

Accepted Answer

Lack of organelles like nucleus

Answer

It has a haemoglobin.

Answer

It has a biconcave shape.

Answer

It is circular with a thinner central portion,

Question 8

Which feature allows RBC to transport oxygen?

Accepted Answer

It has a haemoglobin.

Answer

It is circular with a thinner central portion,

Answer

It has a biconcave shape.

Answer

Lack of organelles like nucleus.

Question 9

Which of following correctly shows how the xylem is adapted to carry out its function?

Accepted Answer

It has a continuous lumen with no cross walls so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Answer

It has a long and narrow root hair so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Answer

It has a haemoglobin so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

Answer

It has a lignin so that it can transport water and dissolved mineral salts from the soil to all parts of the plants more efficiently.

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