HORTICULTURE

HORTICULTURE SCIENCE

PLANT BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why is a rhizoid not a true root?
A
it has too few root hairs
B
it is anchored to a structure
C
it doesn’t absorb water
D
it is one layer thick
Explanation: 

Detailed explanation-1: -Rhizoids are thin, root-like structures. They aren’t considered true roots, though, because they lack vascular tissue.

Detailed explanation-2: -Rhizoids absorb water mainly by capillary action, in which water moves up between threads of rhizoids and not through each of them as it does in roots, but some species of bryophytes do have the ability to take up water inside their rhizoids.

Detailed explanation-3: -The plant body of bryophytes are thallus-like and attached to a substratum by root-like structures called rhizoids. they do not have true root. Rhizoids does the function of anchoring the plant body to the substrate.

Detailed explanation-4: -These plants do have rhizoids, which are simple, hair-like structures, analogous to the root hairs on the surface of a flowering plant root. Rhizoids are used for water transport, and some may be involved in nutrient transport, but they aren’t fully-functioning roots.

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