Biology
Assertion (A): Xylem and phloem are the two types of vascular tissues which help in the transportation of materials to the various parts of the plant.
Reason (R): Xylem transports water and minerals from the roots to the leaves whereas phloem transports the prepared food material from the leaves to various parts of the plant.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Answer
Both A and R are true and R is the correct explanation of A.
Reason (R): A is true as Xylem transports water and minerals from roots to leaves.
R is true as Phloem transports food (sugars) from leaves to other parts. The reason correctly explains how these tissues carry out transportation.
Therefore, Both A and R are true and R is the correct explanation of A is the correct option.
Related Questions
Assertion (A): Tracheids are made up of elongated dead cells with large cavities without any contents.
Reason (R) : Tracheids provide mechanical support by developing various types of thickenings in their walls.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Lymph is a fluid connective tissue which does not contain any blood cells.
Reason (R): Lymph is concerned with transportation and immunity.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Cardiac muscles are striated, uninucleated and branched. Cells are relatively short and located in the muscles of the heart.
Reason (R): Cardiac muscles can contract without outside stimulation and do not get tired easily.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Samay is working on a school project for his biology class. His teacher asks him to study plant growth at tissue level and identify the specific tissues involved in this process. He sows a few soaked bean seeds in his kitchen garden and observes the sprouts under a microscope. He notices actively dividing cells in the growing regions of the plant.
(a) Name the type of tissue observed by Samay that has the ability to divide repeatedly and produce a large number of cells in a particular region.
(b) Write two specific locations in the plant body where the above mentioned tissue can be found.
(c) State any two main characteristic features of the cells of this tissue.
(d) What are the 2 main categories of this tissue ?