AP BIOLOGY

PLANTS

STEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The growing points of stems.
A
Node
B
terminal bud
C
bud
Explanation: 

Detailed explanation-1: -The growing portion at the apex of the shoot is the terminal bud of the plant, and by the continued development of this bud and its adjacent tissues, the stem increases in height. Lateral buds and leaves grow out of the stem at intervals called nodes; the intervals on the stem between the nodes are called internodes.

Detailed explanation-2: -What we refer to as “growing points” are technically known as “meristems". These are the physiologically active regions of the plant where cell division and cell differentiation occur.

Detailed explanation-3: -Plant Buds If a bud occurs on the tip of a stem, then it is called a terminal or apical bud. Lateral buds are those which occur on the side of stems. Those lateral buds that occur at the leaf axil where the leaf attaches to the stem are called axillary buds.

Detailed explanation-4: -In botany, a bud is an undeveloped or embryonic shoot and normally occurs in the axil of a leaf or at the tip of a stem.

Detailed explanation-5: -bud, Small lateral or terminal protuberance on the stem of a vascular plant that may develop into a flower, leaf, or shoot. Buds arise from meristem tissue. In temperate climates, trees form resting buds that are resistant to frost in preparation for winter.

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