Yes, it is correct. In the dicotyledonous plants, the direct elongation of the radicals leads to the formation of primary root which grows inside the soil.

Yes, it is correct. It develops at the node and bears a bud in its axil.

Yes, it is correct. In Australian acacia, the leaves are small and short-lived. The petioles in these plants expand, become green and synthesize food.

Yes, it is the correct answer. Axillary buds of stems may also get modified into woody, straight and pointed thorns, like in Bougainvillea.

Yes, it is correct. In a pinnately compound leaf a number of leaflets are present on a common axis, the rachis, which represents the midrib of the leaf as in neem.

Yes, it is correct. It is the arrangement of leaves on a stem and is of three types; alternate, opposite and whorled.

Yes, it is the correct answer as sieve tubes are an element of phloem. Rest all are elements of xylem.

Yes, it is correct. Meristematic tissues are found in those regions which need to grow continuously. Primary meristems appear early in the life of a plant and are responsible for the formation of primary plant body. Primary growth involves development of new parts of a plant and growth in the length of a particular part. Both apical and intercallary are primary meristems.

When xylem and phloem within a vascular bundle are arranged in an alternate manner on different radii, the arrangement is called radial such as in roots.

Yes, it is correct. In grasses, the guard cells are dumbbell shaped. The outer walls of guard cells (away from the stomatal pore) are thin and the inner walls (towards the stomatal pore) are highly thickened.

Yes, it is correct. Leaf gets strength to stand firm with the help of veins and these veins work as channels to transport water, food and minerals.

Yes, it is the correct answer. All are the functions of a stem, so the correct answer is this.

Yes, it is the correct answer. Specific regions of apical meristem produce dermal tissues, ground tissues and vascular tissues.

Vascular cambium and cork cambium are involved in secondary growth.

Yes, it is the correct answer as this is a false statement.