AP BIOLOGY

PLANTS

ROOTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The first root that germinates from a seed is the
A
taproot
B
radicle
C
cotyledon
D
none of these
Explanation: 

Detailed explanation-1: -The primary root, or radicle, is the first organ to appear when a seed germinates. It grows downward into the soil, anchoring the seedling. In gymnosperms and dicotyledons (angiosperms with two seed leaves), the radicle becomes a taproot.

Detailed explanation-2: -Radicle is the first part of a seedling to emerge from the seed during the process of germination. It is the embryonic root of the plant and grows downward into the soil.

Detailed explanation-3: -Radicle is the first part of the seedling. Plumule grows after the radicle. The radicle makes the root of the plant. Plumule makes the plant shoot.

Detailed explanation-4: -The radicle grows first because the roots need to stabilise the plant before the leaves and stem grow, and the roots gather water and nutrients from the soil which are needed to continue growing.

Detailed explanation-5: -The radicle is the embryonic root of the plant, and grows downward in the soil (the shoot emerges from the plumule).

There is 1 question to complete.