Biology
Assertion (A): Tracheids are made up of elongated dead cells with large cavities without any contents.
Reason (R) : Tracheids help in the conduction of prepared food from the leaves to other parts of a plant.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Related Questions
Assertion (A): Lateral (or cambium) meristem is responsible for the increase in the girth (diameter) of the stem.
Reason (R): Cambium is located near the tips of the root and stem and also on the tips of axillary buds where growth occurs at a faster rate.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Assertion (A): Collenchyma is composed of long and narrow cells. These cells have very thick walls due to the deposition of lignin.
Reason (R): Collenchyma stores food and provides temporary support to the parts of a plant.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Assertion (A): Lymph is a fluid connective tissue which does not contain any blood cells.
Reason (R): Lymph is concerned with transportation and immunity.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
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.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.