Question

Runner (stems) are usually found in
a. Grasses
b. Epiphytes
c. Climbers
d. Twiners

Answer 1

Hint: On the surface of soil the runner is a creeping stem having long internodes that run horizontally that have adventitious roots, scale leaves and node bear axillary buds. Runners produced in all directions by the mother plant. Vegetative propagation helped by the runner break off and grow into the individual part of the plant.

Complete answer:
The function of the stems found on the surface of soil supports the main body of leaves and plants. Also help to Store the water, minerals that help the photosynthesis of the plants. With the help of photosynthesis young green stems also performed a minor role in the production of food for the plants.

Leaves and buds arise from the node, and internode is the portion that presents between two successive nodes. In the leaf, flower development of the bud is an embryonic stem which has potential for further plant growth.

The main characteristics of the stems such as herbaceous like has been covered with epidermis, have primary tissues, grow to a small diameter and on the other side characteristics present in the woody stems that are covered with periderm, grow to a considerable diameter. Rhizomes, tubers, bulbs, and corms are examples of underground roots. Runner, stolon, offset, sucker is the example of asexual reproduction parts of the root.

Hence, the correct answer is option (A).

Note: Runner is a type of subaerial stem modification usually found in the grasses and given examples as spider grass, peppermint, strawberries and Bermuda grass. Modified plants such as underground stems that derived from the stem tissues under the soil surface. And the runner helps to absorb water from the soil.